
Prof. Dr. Med. Frank Kolligs
Surgical Gastroenterologist
- Prof. Dr. Med. Frank Kolligs is a gastroenterologist with 17+ years of experience.
- His areas of expertise include gastroenterology, hepatology, endoscopy, ultrasound and functional diagnosis.
- He is a recognized expert in the treatment of liver cancer and colorectal cancer.
- Dr. Kolligs is engaged in scientific activities at the University of Marburg and the University of Michigan, USA.
- He also participates in conferences of specialized societies.
- He completed his graduation and post-graduation from eminent universities in Germany.
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- Prof. Dr. Med. Frank Kolligs is a gastroenterologist with 17+ years of experience.
- His areas of expertise include gastroenterology, hepatology, endoscopy, ultrasound and functional diagnosis.
- He is a recognized expert in the treatment of liver cancer and colorectal cancer.
- Dr. Kolligs is engaged in scientific activities at the University of Marburg and the University of Michigan, USA.
- He also participates in conferences of specialized societies.
- He completed his graduation and post-graduation from eminent universities in Germany.

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.

Dr. Med. Marek Budner
Surgical Oncologist
- Dr. Med. Marek Budner is a surgical oncologist with 31+ years of experience.
- His forte is diagnosis and treatment of breast diseases, surgical treatment of mammary carcinomas, oncoplastic breast surgeries, plastic and reconstructive breast surgery and colposcopic diagnostics in the lower genital tract.
- He completed graduation followed by post-graduation from an esteemed university.
- Dr. Budner did training in oncology from renowned hospitals in Germany.
- He has many publications under his name in peer-reviewed journals.
- He is a member of several medical organizations.
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- Dr. Med. Marek Budner is a surgical oncologist with 31+ years of experience.
- His forte is diagnosis and treatment of breast diseases, surgical treatment of mammary carcinomas, oncoplastic breast surgeries, plastic and reconstructive breast surgery and colposcopic diagnostics in the lower genital tract.
- He completed graduation followed by post-graduation from an esteemed university.
- Dr. Budner did training in oncology from renowned hospitals in Germany.
- He has many publications under his name in peer-reviewed journals.
- He is a member of several medical organizations.

Prof. Dr. med. Karl-Jurgen Oldhafer
Surgical Oncologist
- Prof. Dr. med. Karl-Jurgen Oldhafer is a surgical oncologist with 33+ years of experience.
- His clinical interest includes treating biliary diseases, gallbladder tumors, liver diseases and cirrhosis.
- He won a prize for the best study on transplantation, 1995 and an award for the Best report “Hyperthermic isolated liver perfusion (HILP) with tumor necrosis factor”, 1997.
- Dr. Oldhafer completed graduation from the University of Gottingen, Germany followed by post-graduation in oncology.
- He did an internship from Hannover Medical School, Germany.
- He is well-published in national and international journals.
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- Prof. Dr. med. Karl-Jurgen Oldhafer is a surgical oncologist with 33+ years of experience.
- His clinical interest includes treating biliary diseases, gallbladder tumors, liver diseases and cirrhosis.
- He won a prize for the best study on transplantation, 1995 and an award for the Best report “Hyperthermic isolated liver perfusion (HILP) with tumor necrosis factor”, 1997.
- Dr. Oldhafer completed graduation from the University of Gottingen, Germany followed by post-graduation in oncology.
- He did an internship from Hannover Medical School, Germany.
- He is well-published in national and international journals.
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Prof. Dr. Med. Michael Bartels
Surgical Oncologist
- Prof. Dr. Med. Michael Bartels is a surgical oncologist with 34+ years of experience.
- His clinical interest includes hepatobiliary surgery, pancreatic surgery, minimally invasive procedures, colorectal and cancer surgery.
- He is a member of German General and Visceral Surgery Society (DGAV), German Surgeons Association (BDC), Liver, Gall-bladder and Pancreatic Surgery Research Group (CAGLP), European Society for Medical Oncology (ESMO), European Organization for Research and Treatment of Cancer (EORTC) and German Interdisciplinary Sarcoma Group (GISG).
- Dr. Bartels did graduation from Hannover Medical School, Germany followed by post-graduation.
- He completed training in oncology from the renowned hospital in Germany.
- He has many publications under his name in both national and international journals.
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- Prof. Dr. Med. Michael Bartels is a surgical oncologist with 34+ years of experience.
- His clinical interest includes hepatobiliary surgery, pancreatic surgery, minimally invasive procedures, colorectal and cancer surgery.
- He is a member of German General and Visceral Surgery Society (DGAV), German Surgeons Association (BDC), Liver, Gall-bladder and Pancreatic Surgery Research Group (CAGLP), European Society for Medical Oncology (ESMO), European Organization for Research and Treatment of Cancer (EORTC) and German Interdisciplinary Sarcoma Group (GISG).
- Dr. Bartels did graduation from Hannover Medical School, Germany followed by post-graduation.
- He completed training in oncology from the renowned hospital in Germany.
- He has many publications under his name in both national and international journals.

Pd Dr. Med. Ulrich Halm
Surgical Oncologist
- Pd Dr. Med. Ulrich Halm is a gastro-oncologist with 26+ years of experience.
- His clinical interest lies in gastroenterology, hepatology and gastroenterology oncology.
- After graduation, he did post-graduation in gastro-oncology.
- Dr. Halm also did training in gastro-oncology from the renowned hospital of Germany.
- He is a member of several prestigious medical organizations.
- He has penned several articles that are published in peer-reviewed journals.
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- Pd Dr. Med. Ulrich Halm is a gastro-oncologist with 26+ years of experience.
- His clinical interest lies in gastroenterology, hepatology and gastroenterology oncology.
- After graduation, he did post-graduation in gastro-oncology.
- Dr. Halm also did training in gastro-oncology from the renowned hospital of Germany.
- He is a member of several prestigious medical organizations.
- He has penned several articles that are published in peer-reviewed journals.

Dr. Boris Pfaffenbach
Surgical Oncologist
- Dr. Boris Pfaffenbach is a reputed Oncologist who has been treating cancers of the digestive system for +28 years. He and his team have performed over 9,000 such procedures.
- He is a professional member of the German Society of Gastroenterology, the German Dietitian Association and the European Society of Gastroenterology and Endoscopy.
- In 1990, Dr. Pfaffenbach obtained his medical degree in General medicine from University of Bonn. In 1997, he obtained a speciality in gastroenterology.
- He is an expert at treating disorders pertaining to the gastrointestinal tract, pancreas and the gallbladder. He also performs Esophagectomy and offers chemotherapy, leukemia chemotherapy and chemotherapy for breast cancer.
- He has authored and co-authored over 130 publications.
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- Dr. Boris Pfaffenbach is a reputed Oncologist who has been treating cancers of the digestive system for +28 years. He and his team have performed over 9,000 such procedures.
- He is a professional member of the German Society of Gastroenterology, the German Dietitian Association and the European Society of Gastroenterology and Endoscopy.
- In 1990, Dr. Pfaffenbach obtained his medical degree in General medicine from University of Bonn. In 1997, he obtained a speciality in gastroenterology.
- He is an expert at treating disorders pertaining to the gastrointestinal tract, pancreas and the gallbladder. He also performs Esophagectomy and offers chemotherapy, leukemia chemotherapy and chemotherapy for breast cancer.
- He has authored and co-authored over 130 publications.

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. 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.
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