Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Medstar Medical Group - Southern Maryland LLC

Ambulatory Surgical Clinic/Center in Prince Frederick, MD · enumerated 2026 · authorized official Alan Buster, C.O.O..

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

National Provider Identifier

1891626594

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Registry record

Entity type Organization (Type 2)

Legal business name Medstar Medical Group - Southern Maryland LLC

Practice address 130 Hospital Drive, Ste 300, Prince Frederick, MD, 20678

Phone (301) 373-7900

Fax (301) 373-6900

Enumeration date May 29, 2026

Last updated in NPPES May 29, 2026

Taxonomy & classification

261QA1903X Ambulatory Surgical Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Alan Buster

Title C.O.O.

Phone (301) 373-7905

Other identifiers

Identifier	Type	State	Issuer
423411104	Medicaid	MD	-

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 Medstar Medical Group - Southern Maryland LLC?

The NPI for Medstar Medical Group - Southern Maryland LLC is 1891626594, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Medstar Medical Group - Southern Maryland LLC?

NPPES lists Alan Buster (C.O.O.) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-29.