
Dr. Bernd Hertenstein
Surgical Oncologist• Dr. Bernd Hertenstein is a well-known Clinical Oncologist with a career spanning 32 years of providing chemotherapy and radiotherapy to cancer patients.
• His areas of expertise include, performing Tumour Marker Blood Test, chemotherapy, Bone Marrow Transplant, Autologous bone marrow transplantation, Allogenic bone marrow transplantation from a related donor, Allogenic bone marrow transplantation from an unrelated donor, radiofrequency ablation of the liver, chemotherapy for liver cancer, chemoembolization of the liver, chemotherapy for breast cancer, leukemia chemotherapy and stem cell transplantation.
• He has contributed many scholarly articles to numerous publications.
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• His areas of expertise include, performing Tumour Marker Blood Test, chemotherapy, Bone Marrow Transplant, Autologous bone marrow transplantation, Allogenic bone marrow transplantation from a related donor, Allogenic bone marrow transplantation from an unrelated donor, radiofrequency ablation of the liver, chemotherapy for liver cancer, chemoembolization of the liver, chemotherapy for breast cancer, leukemia chemotherapy and stem cell transplantation.
• He has contributed many scholarly articles to numerous publications.
• Dr. Bernd Hertenstein is a well-known Clinical Oncologist with a career spanning 32 years of providing chemotherapy and radiotherapy to cancer patients.
• His areas of expertise include, performing Tumour Marker Blood Test, chemotherapy, Bone Marrow Transplant, Autologous bone marrow transplantation, Allogenic bone marrow transplantation from a related donor, Allogenic bone marrow transplantation from an unrelated donor, radiofrequency ablation of the liver, chemotherapy for liver cancer, chemoembolization of the liver, chemotherapy for breast cancer, leukemia chemotherapy and stem cell transplantation.
• He has contributed many scholarly articles to numerous publications.

Dr. Alessandro Marra
Surgical Oncologist• Dr.Alessandro Marra is an acclaimed Oncologist and Surgeon with a vast experience of 37 years of treating lung cancer and cardiothoracic ailments.
• Over his experience of several decades, he possesses the expertise of performing Lobectomy, lung cancer surgery and cardiothoracic surgery.
• He has to his repute, contributions of several articles in various publications.
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• Over his experience of several decades, he possesses the expertise of performing Lobectomy, lung cancer surgery and cardiothoracic surgery.
• He has to his repute, contributions of several articles in various publications.
• Dr.Alessandro Marra is an acclaimed Oncologist and Surgeon with a vast experience of 37 years of treating lung cancer and cardiothoracic ailments.
• Over his experience of several decades, he possesses the expertise of performing Lobectomy, lung cancer surgery and cardiothoracic surgery.
• He has to his repute, contributions of several articles in various publications.

Dr. Dieter Ukena
Surgical Oncologist• Dr. Dieter Ukena is a renowned Oncologist with an experience spanning across 37 years. Dr. Ukena has worked extensively in the field of treating lung cancer and respiratory ailments.
• He holds the professional membership of the German Society of Pulmonology and Respiratory Medicine (DGP).
• Dr. Ukena specialises in the treatment of pulmonary and pleural diseases. This also includes treating cancer and respiratory malfunctions during sleep and lung cancer with immunotherapy. He also offers immunotherapy with Keytruda (Pembolizumab) Clinics and radiotherapy for lung cancer.
• He has contributed many articles on obstructive airways disease and bronchial asthma to numerous publications.
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• He holds the professional membership of the German Society of Pulmonology and Respiratory Medicine (DGP).
• Dr. Ukena specialises in the treatment of pulmonary and pleural diseases. This also includes treating cancer and respiratory malfunctions during sleep and lung cancer with immunotherapy. He also offers immunotherapy with Keytruda (Pembolizumab) Clinics and radiotherapy for lung cancer.
• He has contributed many articles on obstructive airways disease and bronchial asthma to numerous publications.
• Dr. Dieter Ukena is a renowned Oncologist with an experience spanning across 37 years. Dr. Ukena has worked extensively in the field of treating lung cancer and respiratory ailments.
• He holds the professional membership of the German Society of Pulmonology and Respiratory Medicine (DGP).
• Dr. Ukena specialises in the treatment of pulmonary and pleural diseases. This also includes treating cancer and respiratory malfunctions during sleep and lung cancer with immunotherapy. He also offers immunotherapy with Keytruda (Pembolizumab) Clinics and radiotherapy for lung cancer.
• He has contributed many articles on obstructive airways disease and bronchial asthma to numerous publications.

Dr. Rainer Porschen
Surgical Gastroenterologist• Dr. Rainer Porschen is an ace Oncologist and a Gastroenterologist based in Bremen with a rich experience of 37 years in the field.
• He is among the best-rated gastroenterologists in Europe and was ranked among the top 100 doctors of Germany by FOCUS magazine for the treatment of GI lesions.
• He is a professional member of several medical societies of Germany that deal with the treatment of rectum and cancer, ulcerative colitis, pancreatic cancer, Barrett’s syndrome and reflux disease.
• In 1973, he completed his graduation from the National University of Aachen and in 1980 received his doctorate from the Institute of Medicine of the Nuclear Research Center, Jülich.
• His area of expertise is in the treatment of tumours of the gastrointestinal (GI) tract, X-ray diagnostics and in conducting colonoscopy. He has also performed gastric bypass and Colectomy procedures.
• He has authored several papers for various publications.
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• He is among the best-rated gastroenterologists in Europe and was ranked among the top 100 doctors of Germany by FOCUS magazine for the treatment of GI lesions.
• He is a professional member of several medical societies of Germany that deal with the treatment of rectum and cancer, ulcerative colitis, pancreatic cancer, Barrett’s syndrome and reflux disease.
• In 1973, he completed his graduation from the National University of Aachen and in 1980 received his doctorate from the Institute of Medicine of the Nuclear Research Center, Jülich.
• His area of expertise is in the treatment of tumours of the gastrointestinal (GI) tract, X-ray diagnostics and in conducting colonoscopy. He has also performed gastric bypass and Colectomy procedures.
• He has authored several papers for various publications.
• Dr. Rainer Porschen is an ace Oncologist and a Gastroenterologist based in Bremen with a rich experience of 37 years in the field.
• He is among the best-rated gastroenterologists in Europe and was ranked among the top 100 doctors of Germany by FOCUS magazine for the treatment of GI lesions.
• He is a professional member of several medical societies of Germany that deal with the treatment of rectum and cancer, ulcerative colitis, pancreatic cancer, Barrett’s syndrome and reflux disease.
• In 1973, he completed his graduation from the National University of Aachen and in 1980 received his doctorate from the Institute of Medicine of the Nuclear Research Center, Jülich.
• His area of expertise is in the treatment of tumours of the gastrointestinal (GI) tract, X-ray diagnostics and in conducting colonoscopy. He has also performed gastric bypass and Colectomy procedures.
• He has authored several papers for various publications.
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Dr. Jorg Groticke
Medical Oncologist
- Dr. Jorg Groticke is a Clinical Oncologist with 25 years of experience as an expert treating hematological malignancies and gastrointestinal tract tumours.
- Dr.Groticke is a Member of the German Cancer Society, Bremen Cancer Society, German Society of Hematology and Medical Oncology and German Network for Evidence-based Medicine.
- In 1987, Professor Groticke completed his specialisation in immunology.
- His association with the hospital dates back to 1993, when he was awarded the doctor's degree at the hospital's Internal Medicine Department.
- His areas of interest include, chemotherapy, immunotherapy, targeted therapy, immunotherapy with keytruda (pembolizumab), chemotherapy for breast cancer and leukemia chemotherapy.
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- Dr. Jorg Groticke is a Clinical Oncologist with 25 years of experience as an expert treating hematological malignancies and gastrointestinal tract tumours.
- Dr.Groticke is a Member of the German Cancer Society, Bremen Cancer Society, German Society of Hematology and Medical Oncology and German Network for Evidence-based Medicine.
- In 1987, Professor Groticke completed his specialisation in immunology.
- His association with the hospital dates back to 1993, when he was awarded the doctor's degree at the hospital's Internal Medicine Department.
- His areas of interest include, chemotherapy, immunotherapy, targeted therapy, immunotherapy with keytruda (pembolizumab), chemotherapy for breast cancer and leukemia chemotherapy.

Dr. Mustafa Aydgodu
Surgical Oncologist
- Dr. Mustafa Aydgodu is an Oncologist with experience of 25 years in treating cancers of the breast, ovaries and cervix.
- Dr. Aydogdu holds a certification by the German Cancer Society.
- His expertise includes, administering radiotherapy for breast cancer. He specialises in the reconstruction of the amputated breast. He holds a certificate of ‘Master in Senology’ and also performs cosmetic operations such as breast reduction, enlargement and correcting breast malformations.
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- Dr. Mustafa Aydgodu is an Oncologist with experience of 25 years in treating cancers of the breast, ovaries and cervix.
- Dr. Aydogdu holds a certification by the German Cancer Society.
- His expertise includes, administering radiotherapy for breast cancer. He specialises in the reconstruction of the amputated breast. He holds a certificate of ‘Master in Senology’ and also performs cosmetic operations such as breast reduction, enlargement and correcting breast malformations.

Prof. Dr. Med. Nadia Harbeck
Surgical Oncologist
- Prof. Dr. Med. Nadia Harbeck is an expert in Mammology who has a reputation for diagnosing, treating and performing surgical procedures for malignant and benign breast diseases in women and men for +25 years.
- Besides holding professional memberships of national and international breast cancer societies, Dr. Harbeck is the founder of GEMKOM and is a Steering Committee member of AGO Annual Breast Cancer Guidelines and German Interdisciplinary S3 Breast Cancer Guidelines. She is associated with the National SpR/SR Academic Fellowship Programme Committee (Ireland) since 2009, the Swedish Research Council Medicine and Health since 2010 and K.G. Jebsen Foundation, Norway since 2011. She has co-chaired many scientific conferences too.
- During 1983-89, she attended medical school at Ludwig-Maximilians-University. In 1993, she did her M.D at the same university and M.D, Ph.D in 1998. Till as recent as 2019, she has acquired specialisations in her field, worked as Associate Professor and consultant.
- Dr.Harbeck is an expert at performing surgical interventions for breast-related diseases, breast-conserving surgery, Mastectomy, open- and minimally-invasive interventions for breast tissue sampling. She also performs surgeries on the sentinel lymph nodes and the classical axillary lymph node surgery. Also included is breast reconstruction using implants or own tissues or a combination, preventive Mastectomy with immediate reconstruction and plastic surgery in benign breast changes.
- She has many research papers to her credit that have received many citations.
- She has led several clinical trials and has reviewed many national and international grant agencies and journals.
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- Prof. Dr. Med. Nadia Harbeck is an expert in Mammology who has a reputation for diagnosing, treating and performing surgical procedures for malignant and benign breast diseases in women and men for +25 years.
- Besides holding professional memberships of national and international breast cancer societies, Dr. Harbeck is the founder of GEMKOM and is a Steering Committee member of AGO Annual Breast Cancer Guidelines and German Interdisciplinary S3 Breast Cancer Guidelines. She is associated with the National SpR/SR Academic Fellowship Programme Committee (Ireland) since 2009, the Swedish Research Council Medicine and Health since 2010 and K.G. Jebsen Foundation, Norway since 2011. She has co-chaired many scientific conferences too.
- During 1983-89, she attended medical school at Ludwig-Maximilians-University. In 1993, she did her M.D at the same university and M.D, Ph.D in 1998. Till as recent as 2019, she has acquired specialisations in her field, worked as Associate Professor and consultant.
- Dr.Harbeck is an expert at performing surgical interventions for breast-related diseases, breast-conserving surgery, Mastectomy, open- and minimally-invasive interventions for breast tissue sampling. She also performs surgeries on the sentinel lymph nodes and the classical axillary lymph node surgery. Also included is breast reconstruction using implants or own tissues or a combination, preventive Mastectomy with immediate reconstruction and plastic surgery in benign breast changes.
- She has many research papers to her credit that have received many citations.
- She has led several clinical trials and has reviewed many national and international grant agencies and journals.

Dr. med. Kerstin Lommel
Surgical Oncologist
- Dr. med. Kerstin Lommel is an experienced Oncologist (dermatology) with +23 years of experience in the treatment of basal cell basalioma, carcinoma, spinaloma and melanoma.
- Dr.Lommel acquired Board Certification in Dermatology (2001) and in Occupational Dermatology (2004).
- She is an expert at performing biopsies and surgical removal of tumours and some reconstructive procedures such as skin grafts from other parts of the patient's body and flap surgery.
- She has authored few papers for journals.
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- Dr. med. Kerstin Lommel is an experienced Oncologist (dermatology) with +23 years of experience in the treatment of basal cell basalioma, carcinoma, spinaloma and melanoma.
- Dr.Lommel acquired Board Certification in Dermatology (2001) and in Occupational Dermatology (2004).
- She is an expert at performing biopsies and surgical removal of tumours and some reconstructive procedures such as skin grafts from other parts of the patient's body and flap surgery.
- She has authored few papers for journals.

Dr. Andreas Naumann
Surgical Oncologist
- Dr. Andreas Naumann is a reputed Oncologist with an experience spanning across 22 years. He is a specialist in ENT, Plastic Surgery and Special Pain.
- He has held memberships of, the German Society for ENT medicine, ear and head surgery (1992), the Spanish-German Society for ENT medicine, ear and head surgery (1997), the European Tissue Engineering Society (2000), German Society for Plastic and Reconstructive Surgery eV (DGPW) (2002), Working Group on Plastic, Reconstructive and Aesthetic Head and Neck Surgery (APKO) (2003), European Academy of Facial Plastic Surgery (EAFPS) (2004) and the Guideline Commission "Auricular Surgery" of the German Society for ear, nose and throat medicine, ear and head surgery (2008).
- He has also served as a Board member of the Otorhinolaryngologische Gesellschaft zu München eV (2001) and of the Working Group for Plastic, Reconstructive and Aesthetic Head and Neck Surgery (APKO) (2007).
- He was the Presidium member, as a non-permanent advisory board for ENT medicine (2007). He was the Chairman of the Working Group for Plastic, Reconstructive and Aesthetic Head and Neck Surgery (APKO) of the German Society for Ear, Nose and Throat Medicine, Head and Neck Surgery (2014).
- He completed his study of Human Medicine at Ludwig Maximilians University, Munich, 1987-94. From July 1994 to December 1995, he underwent internship at the clinic and polyclinic for ENT patients at Ludwig Maximilians University, Munich.
- He earned a doctoral thesis in 1995 and a Postdoctoral qualification in 2005.
- Dr. Naumann is an expert in general and special conservative/operative ENT medicine, neck and head cancer surgery, skull base surgery and endoscopic nasal and sinus surgery, restorative and hearing-improving surgery of the ear, Reconstructive neck and head and plastic surgeries.
- He is also a qualified medical professional of Allergology and laser protection.
- He has contributed several scholarly articles to publications and written books and book contributions.
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- Dr. Andreas Naumann is a reputed Oncologist with an experience spanning across 22 years. He is a specialist in ENT, Plastic Surgery and Special Pain.
- He has held memberships of, the German Society for ENT medicine, ear and head surgery (1992), the Spanish-German Society for ENT medicine, ear and head surgery (1997), the European Tissue Engineering Society (2000), German Society for Plastic and Reconstructive Surgery eV (DGPW) (2002), Working Group on Plastic, Reconstructive and Aesthetic Head and Neck Surgery (APKO) (2003), European Academy of Facial Plastic Surgery (EAFPS) (2004) and the Guideline Commission "Auricular Surgery" of the German Society for ear, nose and throat medicine, ear and head surgery (2008).
- He has also served as a Board member of the Otorhinolaryngologische Gesellschaft zu München eV (2001) and of the Working Group for Plastic, Reconstructive and Aesthetic Head and Neck Surgery (APKO) (2007).
- He was the Presidium member, as a non-permanent advisory board for ENT medicine (2007). He was the Chairman of the Working Group for Plastic, Reconstructive and Aesthetic Head and Neck Surgery (APKO) of the German Society for Ear, Nose and Throat Medicine, Head and Neck Surgery (2014).
- He completed his study of Human Medicine at Ludwig Maximilians University, Munich, 1987-94. From July 1994 to December 1995, he underwent internship at the clinic and polyclinic for ENT patients at Ludwig Maximilians University, Munich.
- He earned a doctoral thesis in 1995 and a Postdoctoral qualification in 2005.
- Dr. Naumann is an expert in general and special conservative/operative ENT medicine, neck and head cancer surgery, skull base surgery and endoscopic nasal and sinus surgery, restorative and hearing-improving surgery of the ear, Reconstructive neck and head and plastic surgeries.
- He is also a qualified medical professional of Allergology and laser protection.
- He has contributed several scholarly articles to publications and written books and book contributions.

Prof. Dr. Ayman Agha
Surgical Oncologist
- Prof. Dr. Ayman Agha is a reputed Munich-based Oncologist specialising in the treatment of oncological diseases of the abdomen for +23 years. He has expertise in treating bowel cancer and pancreatic cancer.
- He holds professional memberships of the Bavarian Surgeons Association, the Professional Association of German Surgeons, the Surgical Working Association for Minimally Invasive Surgery (CAMIC), the Surgical Working Association for Endocrine Surgery (CAEK), the German Society for Visceral Surgery, the Tumor Center Regensburg and the Rescue Center, Regensburg. Dr. Agha is also a Full member of the German Society of Surgery.
- He obtained his medical education during 1987-93, from Friedrich–Alexander University Erlangen–Nuremberg. Dr. Agha did his PG training in General Surgery in 1993 at University Hospital, Regensburg. Between 2000-04, he obtained Board Certification for General and Visceral surgery.
- He is an expert at treating bowel cancer, tumuors in the pancreatic tail, Peritoneal cancer, minimally-invasive surgery for benign and malignant colon disease, ulcerative colitis, Crohn's disease and intestinal prolapse.
- Dr. Agha has acquired vast experience over the years by leading, developing and monitoring clinical trials, by introducing new laparoscopic techniques for mobilization of the left colonic flexure during laparoscopic rectal resection, establishing 'single port surgery', and by attending international laparoscopic congresses.
- He has to his credit, several research papers that have been published in reputed journals.
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- Prof. Dr. Ayman Agha is a reputed Munich-based Oncologist specialising in the treatment of oncological diseases of the abdomen for +23 years. He has expertise in treating bowel cancer and pancreatic cancer.
- He holds professional memberships of the Bavarian Surgeons Association, the Professional Association of German Surgeons, the Surgical Working Association for Minimally Invasive Surgery (CAMIC), the Surgical Working Association for Endocrine Surgery (CAEK), the German Society for Visceral Surgery, the Tumor Center Regensburg and the Rescue Center, Regensburg. Dr. Agha is also a Full member of the German Society of Surgery.
- He obtained his medical education during 1987-93, from Friedrich–Alexander University Erlangen–Nuremberg. Dr. Agha did his PG training in General Surgery in 1993 at University Hospital, Regensburg. Between 2000-04, he obtained Board Certification for General and Visceral surgery.
- He is an expert at treating bowel cancer, tumuors in the pancreatic tail, Peritoneal cancer, minimally-invasive surgery for benign and malignant colon disease, ulcerative colitis, Crohn's disease and intestinal prolapse.
- Dr. Agha has acquired vast experience over the years by leading, developing and monitoring clinical trials, by introducing new laparoscopic techniques for mobilization of the left colonic flexure during laparoscopic rectal resection, establishing 'single port surgery', and by attending international laparoscopic congresses.
- He has to his credit, several research papers that have been published in reputed journals.

Prof. Dr. Christian Witt
Medical Oncologist
- Prof. Dr. Christian Witt is a well-experienced Medical Oncologist with more than 36 years in the field.
- He is a Member of the transplant commission for thoracic organs of the German Heart Center Berlin, German Review Board at Eurotransplant (Leiden, NL), and "Pneumatological Oncology" task force of the German Society for Pneumology and Respiratory Medicine.
- He has also been an eminent Pneumatological expert of the examination and monitoring commission of the standing commission for organ transplantation (StäKo) of the German Medical Association (BÄK) and Board member of the Working Group on Pneumatological Oncology (POA) of the German Cancer Society.
- He completed studying dentistry at the Ernst-Moritz-Arndt University of Greifswald in 1974 and later studied human medicine from the same institution in 1980.
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For further training to become a specialist in internal medicine, he studied at the Polyclinic for Internal Medicine of the Medical Faculty (Charité) of the Humboldt, the University of Berlin in 1984.
- Commissioned by the President of the European Parliament as an International Medical Consultant, he holds expertise in managing and treating cancers related to the Lung, Pleura, Esophagus, Stomach, Liver, Gall Bladder, Brain Tumors, Kidney, Prostate, etc.
- He has showcased papers at many national conferences and has published notable articles in peer-reviewed journals.
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- Prof. Dr. Christian Witt is a well-experienced Medical Oncologist with more than 36 years in the field.
- He is a Member of the transplant commission for thoracic organs of the German Heart Center Berlin, German Review Board at Eurotransplant (Leiden, NL), and "Pneumatological Oncology" task force of the German Society for Pneumology and Respiratory Medicine.
- He has also been an eminent Pneumatological expert of the examination and monitoring commission of the standing commission for organ transplantation (StäKo) of the German Medical Association (BÄK) and Board member of the Working Group on Pneumatological Oncology (POA) of the German Cancer Society.
- He completed studying dentistry at the Ernst-Moritz-Arndt University of Greifswald in 1974 and later studied human medicine from the same institution in 1980.
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For further training to become a specialist in internal medicine, he studied at the Polyclinic for Internal Medicine of the Medical Faculty (Charité) of the Humboldt, the University of Berlin in 1984.
- Commissioned by the President of the European Parliament as an International Medical Consultant, he holds expertise in managing and treating cancers related to the Lung, Pleura, Esophagus, Stomach, Liver, Gall Bladder, Brain Tumors, Kidney, Prostate, etc.
- He has showcased papers at many national conferences and has published notable articles in peer-reviewed journals.

Prof. Dr. Dimos Baltas
Radiation Oncologist
- Prof. Dr. Dimos Baltas is a well-experienced Radiation Oncologist with more than 32 years in the field.
- He is a respected member of various associations such as the German Society for Medical Physics (DGMP), American Association of Physicists in Medicine (AAPM), European Society for Radiotherapy and Oncology (ESTRO), German Society for Radiation Oncology (DEGRO), Hellenic Association of Medical Physicists (EFIE), and American Brachytherapy Society (ABS).
- After completing his education in physics at the University of Athens in Greece, he later did postgraduate studies at the University of Heidelberg, Radiology Center, Radiation Physics Department, and also is a DAAD scholarship holder.
- He also has a Certification in Medical Physics by the German Society for Medical Physics (DGMP) and is accredited for advanced training of engineers and physicists in the field of radiotherapy from the same institution.
- In 1996, he was awarded the academic title of Adjunct Research Associated University Professor in the Department of Medical Physics & Engineering at the National Technical University of Athens (NTUA), Institute for Communication and Computer Systems (ICCS).
- Dr. Baltas has written 149 publications in peer-reviewed journals and 16 chapters in textbooks.
- He is a Greek native speaker and can also communicate in German and English fluently.
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- Prof. Dr. Dimos Baltas is a well-experienced Radiation Oncologist with more than 32 years in the field.
- He is a respected member of various associations such as the German Society for Medical Physics (DGMP), American Association of Physicists in Medicine (AAPM), European Society for Radiotherapy and Oncology (ESTRO), German Society for Radiation Oncology (DEGRO), Hellenic Association of Medical Physicists (EFIE), and American Brachytherapy Society (ABS).
- After completing his education in physics at the University of Athens in Greece, he later did postgraduate studies at the University of Heidelberg, Radiology Center, Radiation Physics Department, and also is a DAAD scholarship holder.
- He also has a Certification in Medical Physics by the German Society for Medical Physics (DGMP) and is accredited for advanced training of engineers and physicists in the field of radiotherapy from the same institution.
- In 1996, he was awarded the academic title of Adjunct Research Associated University Professor in the Department of Medical Physics & Engineering at the National Technical University of Athens (NTUA), Institute for Communication and Computer Systems (ICCS).
- Dr. Baltas has written 149 publications in peer-reviewed journals and 16 chapters in textbooks.
- He is a Greek native speaker and can also communicate in German and English fluently.
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