Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mark Bertram Sostek, MD

Individual provider Gastroenterology Physician · NPI 1902881329

Dr. Mark Bertram Sostek, MD is a Gastroenterology Physician in Radnor, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2005.

Licensed in
PA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

250 King Of Prussia Rd Penn Medicine At Radnor
Radnor, PA 19087-5220
Phone: (610) 902-1544
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD065050L (PA)

Record details

NPI number1902881329
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 8, 2005
Last updated in NPPESJuly 8, 2007
Mailing address1650 Forest Creek Dr, Blue Bell, PA 19422-3652

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