Overview

Dr. Mark Mahan is a Doctor of Osteopathy with 9 years of experience specializing in Internal Medicine and Surgery. He provides comprehensive care for adult patients, combining his expertise in both medical management and surgical interventions. Dr. Mahan’s dual specialization allows him to offer continuity of care from diagnosis through treatment, whether patients need medical therapy or surgical procedures. Dr. Mahan completed his medical education at New York College of Osteopathic Medicine and recently finished a fellowship at Geisinger Medical Center in 2023. He practices at multiple convenient locations throughout northeastern Pennsylvania, including Scranton, Mount Pocono, and Pittston. His hospital affiliations include Geisinger Community Medical Center and other Geisinger facilities in the region. Dr. Mahan provides care in English and brings his osteopathic training approach to patient treatment, which emphasizes the body’s natural ability to heal.

Education

Medical School
New York Institute of Technology College of Osteopathic Medicine
2017

Residency
Geisinger Wyoming Valley Medical Center
General Surgery Residency

Fellowship
Geisinger Medical Center
Bariatric and Foregut, 2022 – 2023

Certification

American Board of Surgery
Board Certified in General Surgery

Licensure

PA State License
2017 – 2026

Membership

American College of Surgeons
American College of Physicians
American Osteopathic Association
Society of American Gastrointestinal and Endoscopic Surgery
American Society for Metabolic and Bariatric Surgery

NPI #

1841730496

Specialties

Dr. Mark Mahan specializes in bariatric surgery and the surgical treatment of obesity. His expertise includes sleeve gastrectomy, laparoscopic gastric bypass surgery, adjustable gastric banding, and gastric restrictive procedures. He also performs gastrotomy, esophagomyotomy, and revision procedures involving gastric anastomosis or previous restrictive surgeries, providing surgical options tailored to each patient’s weight loss needs.

Bariatric Surgeries Performed

Dr. Mahan performs a range of bariatric procedures designed to support significant and long-term weight loss. His surgical expertise includes sleeve gastrectomy, laparoscopic gastric bypass surgery, adjustable gastric banding, gastric restrictive procedures with partial gastrectomy or jejunojejunostomy, and revision of gastric anastomosis or restrictive procedures. He also provides comprehensive bariatric surgery for the treatment of obesity.

Years of Experience

9 years

Languages Spoken

English