Internal Medicine

Dr. William S. Mark, MD


Doctor William S. Mark, MD is an expert in the field of Internal Medicine.

Doctors Specialties


Accepted Insurances


Drug Facts


NPI NUMBER   1053498782
NPPES Provider LastName   MARK
NPPES Provider FirstName   WILLIAM
NPPES Provider ZIPCode   215022827
NPPES Provider State   MD
Specialty Description   Gastroenterology
Total Claim Count   445.0
Distinct Opioid Count   0.0
Opioid Claim Count   0.0
Percent Opioid Claims   0.0

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Medicare Facts


National Provider Identifier [NPI] 1053498782
Last Name Of The Provider MARK
First Name Of The Provider WILLIAM
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