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Gbmc Hospital Based Services, LLC

Q: What is the NPI number for Gbmc Hospital Based Services, LLC?

The NPI for Gbmc Hospital Based Services, LLC is 1558206540, a Type 2 (organization) record in the CMS NPPES registry.

Anesthesiology Physician in Baltimore, MD · enumerated 2026 · authorized official Peter Ostasewski, Cfo.

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

National Provider Identifier

1558206540

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Gbmc Hospital Based Services, LLC

Parent organization Greater Baltimore Medical Center, Inc.

Practice address 110 West Rd Ste 229, Baltimore, MD, 21204

Phone (410) 825-3131

Enumeration date Apr 23, 2026

Last updated in NPPES Apr 23, 2026

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Peter Ostasewski

Title Cfo

Phone (443) 849-2511

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Gbmc Hospital Based Services, LLC?

The NPI for Gbmc Hospital Based Services, LLC is 1558206540, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Gbmc Hospital Based Services, LLC?

NPPES lists Peter Ostasewski (Cfo) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-23.