1. Home
  2. Directory
  3. Pennsylvania
  4. Radnor
  5. Internal Medicine
  6. NPI Profile

DR. MARK BERTRAM SOSTEK M.D.
NPI 1902881329
Internal Medicine - Gastroenterology in Radnor, PA

Active since December 08, 2005
250 KING OF PRUSSIA RD, PENN MEDICINE AT RADNOR, RADNOR, PA 19087(610) 902-1544 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Mark Bertram Sostek M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK BERTRAM SOSTEK M.D. (NPI 1902881329) is an individual gastroenterology provider in Radnor, Pennsylvania, licensed in Pennsylvania (MD065050L) and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1902881329
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. MARK BERTRAM SOSTEKCredential: M.D.
Location Address250 KING OF PRUSSIA RD, PENN MEDICINE AT RADNORRadnor, PA 19087-5220
Mailing Address1650 Forest Creek DrBlue Bell, PA 19422-3652 · (610) 313-9740
Phone(610) 902-1544
Sole ProprietorNo
Enumeration DateDecember 8, 2005
Last NPPES UpdateJuly 8, 2007
✔ NPI 1902881329 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in PA · MD065050L
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
250 KING OF PRUSSIA RD, Radnor, PA 19087
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINE14752
Medicare ID-Type Unspecified011284JDO

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PENNSYLVANIA ONCOLOGY HEMATOLOGY ASSOCIATES, PC
Non-Pharmacy Dispensing Site
250 KING OF PRUSSIA RD, STE 1B
RADNOR, PA 19087
Chester County (610) 902-5950
FRANK ALBERT DU PONT III MD
Radiology (Diagnostic Radiology)
250 KING OF PRUSSIA RD
RADNOR, PA 19087
Chester County (610) 902-1800
TRUSTEES OF THE UNIV OF PA
Pathology (Anatomic Pathology)
250 KING OF PRUSSIA RD
RADNOR, PA 19087
Chester County (610) 902-2000
NICOLE CZYZEWSKI DPT
Physical Therapist
250 KING OF PRUSSIA RD
RADNOR, PA 19087
Chester County (610) 902-2300
LISA S ROSEN MD
Obstetrics & Gynecology
250 KING OF PRUSSIA RD
RADNOR, PA 19087
Chester County (610) 902-2000
TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
Orthopaedic Surgery
250 KING OF PRUSSIA RD
RADNOR, PA 19087
Chester County (610) 902-2000
TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
Internal Medicine
250 KING OF PRUSSIA RD
RADNOR, PA 19087
Chester County (610) 902-2000
TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
Internal Medicine (Endocrinology, Diabetes & Metabolism)
250 KING OF PRUSSIA RD
RADNOR, PA 19087
Chester County (610) 902-2000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Sostek's NPI number?

The NPI number for Mark Sostek is 1902881329. It was assigned to this individual provider in the NPPES registry on December 8, 2005.

Where is Mark Sostek located?

Mark Sostek practices at 250 King Of Prussia Rd Penn Medicine At Radnor, Radnor, PA 19087. The listed phone number is (610) 902-1544.

What is Mark Sostek's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Mark Sostek was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.