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Dr. med.univ. Stefan Rohrer

Internist, Gastroenterologist, Patient-focused Physician, Complementary Health Practitioner

Dr. Stefan Rohrer Profile PictureI was born on 15.07.1983 in Leoben, in Styria, Austria. I grew up in Upper Styria, in Rottenmann in the Paltental, where I spent my childhood and youth. The village is located in the middle of the Niedere Tauern and has about 6000 inhabitants. To the right and left of of our village the mountains are rising high up. I am very close to the mountains and love nature. I like to hike and trekk and also like to be in the mountains in the winter time (ski touring, skiing). I have also trained as an alpine and high altitude medic.

In my youth I was very active in sports from the age of 4 to 25. Especially regarding football. I played football in different teams and leagues. My main interests besides medicine are archaeology and history. In school I learned Latin and Ancient Greek, participated in translation championships and had received a humanistic education in high school.

In 2001 I started my medical studies at the University of Graz, from which I graduated in 2008. After that I moved to Germany, where I underwent a broad training in conventional medicine with a preference for acute medicine (intensive care and emergency medicine). I was also active as an emergency physician for several years and worked on scientific studies at the university hospitals in Bochum. In the course of time I became more and more interested in complementary medicine, which I consider as an extension to conventional medicine, as well as an enrichment.

This was mainly triggered by personal chronic ailments (neurodermatitis, eczema) and by my son, Julius, who has been struggling with a severe form of epilepsy since he was three months old. Over time I learned a lot of new things that weren’t taught during my education. I like to stress out that we should never lose hope and also never give up to find our way to a better health, and to create it actively! There are always ways and possibilities, you just have to find them and a doctor should never stop searching for them for their patients.

My career

School education:

1993-2001 Bundesgymnasium Stainach / Upper Styria with focus on humanistic studies and natural sciences


Higher Education:

10/2001 start of medical studies at the Karl Franzens University Graz

02-06/2005 Erasmus semester abroad in Heraklion / Crete with internships in internal medicine and radiology

07-10/2006 Stay abroad in Kattappana, Kerala, India; clinical elective in Kattappana, Kerala, India, in the fields of Internal Medicine and Opthalmology at St.John’s Hospital.

05/2008 Doctorate and receival of the degree “Doctor of General Medicine”


Medical Career:

08/2008 – 03/2011 Resident at the Medical Clinic I, Bergmannsheil, Klinikum der Ruhr-Universität Bochum (Director: Prof. H.H. Klein).

05/2011 – 09/2013 Resident at the Medical Clinic I, St. Josef-Hospital – Clinical Center of the Ruhr-University Bochum (Director: Prof. Dr. med. W.E. Schmidt

11/2013 – 03/2014 Resident at the Clinic for Pneumology, Gastroenterology and Internal Medicine, Krupp Hospital Essen Steele (Director: C. P. Schulte)

04/2014 – 12/2015 Resident in the Clinic for Nephrology, Augusta Krankenanstalten Bochum and in the Board of Trustees for Hemodialysis (KfH) (Director: Prof. D. Bokemeyer)

01/2016 – 03/2018 Senior physician at the Clinic for Geriatrics including Day Clinic at the Evangelical Hospital Witten (Director: U.Weitkämper)

04/2018 – 09/2022 Senior physician at the Clinic for Internal Medicine and Gastroenterology at the Evangelical Hospital Hagen-Haspe (Director: PD B.A . Menge)

From 07/2018 Practice and initial consultation (in the hospital) for individual medicine, complementary gastroenterology and alternative therapies


Specialist examinations / additional designations:

Nutritionist DAEM/DGEM (2012), Specialist in Internal Medicine (2013), Additional qualification in Emergency Medicine (2013), Diabetologist AEKWL (2016), Diabetologist DDG (2017), Geriatrics (2017), Specialist in Gastroenterology (2021)



German Society for Diabetology (DDG), German Society for Nutritional Medicine (DGEM), German Society for Geriatrics (DGG), Society for Clinical Metal Toxicology (KMT), Society for Microimmunotherapy



Specialized in radiation protection for emergency diagnostics (2012, updated in 2017), specialized in emergency medical services (2011), travel medicine health consultation, basic psychosomatic care, holistic medical diagnostics and therapy, orthomolecular medicine, functional medicine, alpine and high-altitude medicine (final examination still pending).


Scientific publications:

1. Impaired Crosstalk between Pulsatile Insulin and Glucagon Secretion in Prediabetic Individuals. Rohrer S, Menge BA, Grüber L, Deacon CF, Schmidt WE, Veldhuis JD, Holst JJ, Meier JJ. Journal of Clinical Endocrinology and Metababolism 2012 Mar 7.

2. Rohrer S, Dietrich JW. Das Refeeding-Syndrom – Eine Literaturübersicht [Refeeding Syndrome: A Review of the Literature.]. Z Gastroenterol. 2014 Jun;52(6):593-600. Epub 2014 Jun 6.. PMID 24905111 doi 10.1055/s-0034-1366430

3. Defects in alpha-cell function in patients with diabetes due to chronic pancreatitis compared to patients with type 2 diabetes and healthy individuals. Mumme L, Breuer TGK, Rohrer S, Schenker N, Menge BA, Holst JJ, Nauck MA, Meier JJ. Diabetes Care. 2017 Jul 27. pii: dc170792. doi: 10.2337/dc17-0792


Journal articles and abstracts:

1. How surgeons are becoming the new diabetologists. Aulinger,B., Rohrer, S.; Diabetes Congress Reports December 2011, Congress Proceedings 71st Annual Meeting of the ADA 2011.

2. Therapy with oral antidiabetic agents. S.Rohrer, H. Schatz; Diabetes, Metabolism and the Heart, Number 3, October 2012.

3. Glucose exerts a permissice effect on glucagon-stimulated insulin secretion in healty subjects, J. Raimann, S. Rohrer, G. Gratze, M. Bachar, P. Kotanko ; Abstract ( publication only) bei der ADA

4. Diabetic dyslipidemia, obesity and bariatric surgery. U .C. Brödl, M. Lehrke, S. Rohrer ; Diabetes Congress Reports 4, 2010.