Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael W Costello, MD

Family Medicine Physician in Smithsburg, MD · enumerated 2006 · practices at Medical Practices of Antietam LLC.

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

National Provider Identifier

1740250125

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael W Costello

Credential MD

Sex Male

Practice address 22911 Jefferson Blvd, Smithsburg, MD, 21783

Phone (301) 824-3343

Enumeration date Jan 26, 2006

Last updated in NPPES Jan 25, 2024

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0041378 (MD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
1621121	Other	-	UNITED
522924-09	Other	-	CAREFIRST BCBS MARYLAND
W567-0012	Other	-	CAREFIRST BCBS GHMSI
168371300	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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Michael Costello?

Michael Costello is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-25.