Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William D. Lamm, M.D.

Family Medicine Physician in Cumberland, MD · enumerated 2005.

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

National Provider Identifier

1639156938

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Registry record

Entity type Individual (Type 1)

Name William D. Lamm

Credential M.D.

Sex Male

Practice address 12500 Willowbrook Rd, Cumberland, MD, 21502

Phone (240) 964-8564

Fax (240) 964-8563

Enumeration date Dec 28, 2005

Last updated in NPPES Nov 11, 2010

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0025406 (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
0214942000	Medicaid	WV	-
416577 02	Other	MD	CARE FIRST BC BS
262561000	Medicaid	MD	-
416577 03	Other	MD	CAREFIRST BC BS
J697 0003	Other	DC	BLUE CHOICE
P00135061	Other	MD	TRAVELERS MEDICARE
P00800399	Other	MD	RR MCR

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

What specialty is William Lamm?

William Lamm 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-11-11.