Clinical Interests
- Motility disorders of the esophagus, stomach, small intestine and colon
- Achalasia
- GERD
- Gastroparesis
- Dyspepsia
- Chronic constipation
- Fecal incontinence
Research Interests
- Evaluation and treatment of GI motility disorders including gastroparesis, GERD, constipation
- Development of noninvasive tests to measure gastric emptying and gastric accommodation after ingestion of a solid meal.
- New pharmaceutical treatments for gastroparesis and functional dyspepsia
- Use of impedance during esophageal manometry and esophageal pH monitoring to assess transit and reflux
Education
- MD, Case Western Reserve University, Cleveland, OH
Training
- Fellowship (Gastroenterology Research), Mayo Clinic Medical School, Rochester, MN
- Fellowship, Gastroenterology, Hospital of the University of Pennsylvania, Philadelphia, PA
- Residency, Internal Medicine, Johns Hopkins Hospital, Baltimore, MD
Board Certifications
- American Board of Internal Medicine - Internal Medicine
- American Board of Internal Medicine - Gastroenterology
Memberships
- American Gastroenterological Association
- American Neurogastroenterology and Motility Society
- American College of Gastroenterology
- American Society for Gastrointestinal Endoscopy
Awards and Honors
- Top Doctors, Gastroenterology, Philadelphia magazine, 2015-2016, 2018-2025
- Department of Medicine Research Award
- Best Doctors in America®, Gastroenterology, 2015-2016, 2017-2018, 2019-2020
Treatment Philosophy
My approach to patient care includes obtaining a careful patient history of the symptoms, obtaining carefully selected tests to evaluate the patient's symptoms, reviewing the results of the tests with the patient and deciding on the appropriate treatment for the symptoms and disorder together.
Patient Comments
Dr was caring n listened to all of my concerns
Dr Parkman was attentive and listened to all issues; he demonstrated knowledge and concern and prescribed a medication that will assist with solid emptying.
Dr. Parkman was excellent
Spectacular doctor. Listened carefully, took hand written notes, read each report, and went over Study images on screen, excellent physical exam. As a fellow medical physician, appreciate Dr. Parkman as superb. So lucky to have him.
Dr. Parkman is always amazing. I'm going to need to reference a thesaurus soon because I'm running out of adjectives for him. He's brilliant and caring, devoted and exceptional, trailblazing and supportive. I don't need a thesaurus to tell you he makes me feel like his sister or daughter or mother and he's being just as discerning and committed to giving me that level of treatment. [...]