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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 (6)

The overall average patient rating of Dr. William Mark, Gastroenterologist is Good. Dr. Mark has been reviewed by 7 patients who have provided 6 comments. The rating is 3 out of 4 stars.

Patient Ratings
Ease of Appointment 3.0
Promptness 3.0
Courteous Staff 2.6
Accurate Diagnosis 2.5
Bedside Manner 2.4
Spends Time with Me 2.8
Follows Up After Visit 3.3

Specialties & Research

Dr. William Mark, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 1 area:
  • Women's Health

Education & Awards

Dr. Mark graduated from University of Guadalajara, Mexico, San Antonio.


Dr. Mark has 3 hospital affiliations:

  • Sacred Heart Hospital 
  • Memorial Hospital Med Center-Cumberland 
  • Western Maryland Regional Medical Center 


  • Spanish

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Additional Information
Dr. William Wesley Mark MD is a male Internist, has 36 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. William W. Mark practice?
Dr. William Mark has 2 office locations.
Dr. William Mark practices Internal Medicine and Gastroenterology near Cumberland, MD.
See Cumberland Internists and Cumberland Gastroenterologists.