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

Individual provider Gastroenterology Physician · NPI 1396794939

Stanley James Pietrak, MD is a Gastroenterology in Williamsville, New York. Graduated from Albany Medical College of Union University in 1979, 47 years ago. Practices with Gastroenterology Associates LLP, a 28-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
47
Trained at
Albany Medical College of Union University
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

60 Maple Rd
Williamsville, NY 14221-2917
Phone: (716) 626-5250
Fax: (716) 332-2218
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 143423 (NY)

Record details

NPI number1396794939
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2006
Last updated in NPPESDecember 11, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolALBANY MEDICAL COLLEGE OF UNION UNIVERSITY
Graduated 1979 (47 years in practice)
Group practice Gastroenterology Associates Llp — 28 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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