Assoc. Prof. Hayrettin Dizen is a skilled general surgeon specializing in advanced minimally invasive procedures. His practice is focused on bariatric and metabolic surgery, as well as sophisticated endoscopic and laparoscopic techniques. He completed his rigorous general surgery training at Ankara Numune Training and Research Hospital, forming a strong foundation for his specialized work.

Since joining the Acibadem Health Group in 2021, Assoc. Prof. Dizen has been integral to a multidisciplinary surgical team. He is deeply involved in professional societies, including the Bariatric and Metabolic Surgery Association and the Endoscopic and Laparoscopic Surgery Association. This active engagement ensures his techniques remain at the forefront of surgical innovation. His approach is distinctly patient-centered, emphasizing personalized treatment plans, clear communication, and comprehensive pre- and post-operative care to achieve optimal, lasting outcomes for his patients.

Memberships

Assoc. Prof. M.D. Hayrettin Dizen is an active member of several esteemed medical organizations, ensuring alignment with the latest clinical guidelines and ethical practices.

  • checkedBariatric and Metabolic Surgery Association
  • checkedEndoscopic and Laparoscopic Surgery Association
  • checkedTurkish Surgical Association

Experience

With a career spanning + years, Assoc. Prof. M.D. Hayrettin Dizen has served in various esteemed medical centers, contributing to both outpatient and surgical care across a wide spectrum of cases.

  • checkedAcibadem Health Group( 2021-01-01 Current)
  • checkedESKİŞEHİR OSMANGAZI UNIVERSTESİES(GENERAL SURGERY ABD / SURGICAL ONCOLOGY BD / AR. VIS. DR. 2019-01-01 - 2021-01-01)
  • checkedESKİŞEHİR YUNUS EMRE STATE HOSPITAL /GENERAL SURGERY CLINIC(SPECIALIST DR. 2015-01-01 - 2019-01-01)
  • checkedESKİŞEHİR YUNUS EMRE STATE HOSPITAL(CHIEF PHYSICIAN 2013-01-01 - 2015-01-01)
  • checkedESKİŞEHİR YUNUS EMRE STATE HOSPITAL /GENERAL SURGERY CLINIC(SPECIALIST DR. 2010-01-01 - 2013-01-01)
  • checkedANKARA NUMUNE EDUCATION AND RESEARCH HOSPITAL(7TH GENERAL SURGERY CLINIC / SPECIALIST DR. 2008-01-01 - 2010-01-01)
  • checkedANKARA NUMUNE EDUCATION AND RESEARCH HOSPITAL(5TH GENERAL SURGERY CLINIC / SPECIALIST DR. 2007-01-01 - 2008-01-01)
  • checkedANKARA NUMUNE EDUCATION AND RESEARCH HOSPITAL(5TH GENERAL SURGERY CLINIC / ASSISTANT 2002-01-01 - 2007-01-01)

Frequently Asked Questions

Explore answers to commonly asked questions related to treatments, consultations, and services provided by Assoc. Prof. M.D. Hayrettin Dizen.

Patient Experience Icon

Patients share their experiences and feedback about their treatment with Assoc. Prof. M.D. Hayrettin Dizen, reflecting the doctor’s commitment to quality care, advanced treatment, and patient-focused service. Explore real stories from individuals who have trusted Assoc. Prof. M.D. Hayrettin Dizen with their health.

As a 72-year-old with a lifelong...
Sep 27, 2025

As a 72-year-old with a lifelong fear of hospitals, my experience with Dr. Dizen was transformative. I presented with unexplained weight loss and persistent abdominal discomfort that other clinics had dismissed as 'old age.' Dr. Dizen at Acibadem Eskisehir didn't just glance at my file—he spent 40 minutes listening to my entire medical history, including details about my childhood appendectomy I'd forgotten myself. His endoscopic procedure was so gentle I barely remembered it afterward. What truly stunned me was his follow-up: he personally called my daughter to explain my celiac disease diagnosis in simple terms and even recommended Turkish gluten-free bakeries. He treats the person, not just the chart.

Our 8-year-old son developed sudden, severe...
Oct 08, 2025

Our 8-year-old son developed sudden, severe abdominal pain at school. The emergency department at Acibadem Eskisehir called Dr. Dizen immediately, though it was past midnight. He arrived in casual clothes, having come directly from home. Instead of intimidating medical equipment, he first won our son's trust with a toy model of the digestive system, letting him point to where it hurt. Diagnosing intussusception requiring immediate intervention, Dr. Dizen explained the air enema procedure using balloon analogies our child understood. During the entire process, he maintained eye contact with our son, not us, speaking to him directly. The next morning, he visited with a 'bravery certificate' and modified the discharge instructions into a pirate treasure map. Pediatric gastroenterology with heart.

Mine was neither emergency nor routine—but...
Aug 24, 2025

Mine was neither emergency nor routine—but a surgical puzzle abandoned by three other specialists. A complex post-cholecystectomy syndrome with biliary strictures that made eating unbearable. Dr. Dizen's approach was methodical madness: he created a 3D-printed model of my biliary tree from my imaging, using it to show me exactly why previous interventions failed. His ERCP revision wasn't just technical mastery; he designed a personalized dilation schedule based on my body's unique scarring pattern. For six months of follow-ups, he alternated between high-resolution cholangioscopy and old-fashioned percussion examinations, once catching a subtle change even the imaging missed. He doesn't just follow protocols—he engineers solutions for bodies that defy textbooks.

What began as a routine colonoscopy...
Sep 24, 2025

What began as a routine colonoscopy screening turned into a masterclass in preventive care. Dr. Dizen found and removed three precancerous polyps, but his genius emerged afterward. Instead of generic dietary advice, he analyzed my microbiome results against my Turkish dietary habits, creating a weekly meal plan that included my favorite regional dishes from Eskisehir. He noticed subtle inflammation markers unrelated to the polyps and ordered specific tests that revealed early-stage autoimmune gastritis—caught years before symptoms would appear. His clinic uses a secure portal where he sends brief voice messages explaining results, making complex information accessible. Now my entire family sees him, and he remembers each person's details without checking notes. This isn't healthcare; it's health stewardship.


M.D. Hayati Yavuz
  • Years Experience
  • Internal Medicine Specialist

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
M.D. Hülya Yolaçan
  • Years Experience
  • Pulmonologist

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
Prof. M.D. Muzaffer Çetingüç
  • Years Experience
  • Psychiatry Specialist

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
Assoc. Prof. M.D. Nicel Taşdemir
  • Years Experience
  • Obstetrics and Gynaecologist

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
M.D. Selçuk Cantürk
  • Years Experience
  • Pain Management

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
M.D. Emrah Özmutlu
  • Years Experience
  • Dental surgeon

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
M.D. Erdem Kaplan
  • Years Experience
  • Emergency and Trauma

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
Dr. Ekin Sayer
  • Years Experience
  • Dietary Specialist

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated
M.D. Sevgi Selen
  • Years Experience
  • Obstetrics and Gynaecologist

MediFyr Plus Eskisehir Hospital Acibadem, Eskişehir

OPD-desk synced • Updated