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Grabias Medical Group PC

Internal Medicine Physician in Webster, MA · enumerated 2006 · authorized official Piotr Grabias, Owner Mgr.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1578570537

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Registry record

Entity type Organization (Type 2)
Legal business name Grabias Medical Group PC
Practice address 340 Thompson Rd, Ste 108, Webster, MA, 01570
Phone (508) 949-1988
Fax (508) 949-7225
Enumeration date Aug 2, 2006
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Piotr Grabias
Title Owner Mgr
Phone (508) 949-1988

Other identifiers

Identifier Type State Issuer
9761390 Medicaid MA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Who is the authorized official for Grabias Medical Group PC?
NPPES lists Piotr Grabias (Owner Mgr) as the authorized official for this organization.
What is the NPI number for Grabias Medical Group PC?
The NPI for Grabias Medical Group PC is 1578570537, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.