Browse Health
Gastroenterologist (digestive)
35 years of experience
Accepting new patients
Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (5)

The overall average patient rating of Dr. Mark Tanker is Excellent. Dr. Tanker has been reviewed by 19 patients who have provided 5 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.2
Promptness 3.9
Courteous Staff 4.1
Accurate Diagnosis 3.9
Bedside Manner 4.1
Spends Time with Me 4.0
Follows Up After Visit 3.5

Specialties & Research

Dr. Mark Tanker, DO is board certified in Gastroenterology.

  • He has special expertise in 7 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Inflammatory Bowel Diseases (IBD)
  • Irritable Bowel Syndrome (IBS)
  • Liver Diseases
  • Ulcerative Colitis

Education & Awards

Dr. Tanker graduated from Philadelphia College of Osteopathic Medicine. He has 1 awards.

Patients' Choice Award (2015)


Dr. Tanker has 15 hospital affiliations:

  • Jeanes Hospital 
  • Holy Redeemer Health System 

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Additional Information
Dr. Mark S Tanker DO is a male Internist, has 35 years of experience and practices in Gastroenterology.
Where does Dr. Mark S. Tanker practice?
Dr. Mark Tanker has 1 office location.
Dr. Mark Tanker practices Gastroenterology near Philadelphia, PA.
See Philadelphia Gastroenterologists.