Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William W Bakken, M.D.

Family Medicine Physician in Lancaster, PA · enumerated 2005 · practices at Lancaster General Medical Group.

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

National Provider Identifier

1447247135

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Registry record

Entity type Individual (Type 1)

Name William W Bakken

Credential M.D.

Sex Male

Practice address 101 Abbeyville Rd, Lancaster, PA, 17603

Phone (717) 291-5991

Fax (717) 291-5806

Enumeration date Sep 29, 2005

Last updated in NPPES Feb 19, 2010

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD016728E (PA) 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
5013034	Other	PA	AETNA NON-HMO
B34704	Other	PA	HEALTH ASSURANCE
01486801	Other	PA	CAPITAL BLUE CROSS
51426 S1QD	Other	PA	GEISINGER HEALTH PLAN
P002632	Other	PA	GATEWAY HEALTH PLAN
0007275400001	Medicaid	PA	-
064530	Other	PA	HIGHMARK BLUE SHIELD
515171	Other	PA	AETNA HMO

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

Where does William Bakken practice?

The practice location on file with NPPES is in Lancaster, PA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for William Bakken?

The National Provider Identifier (NPI) for William Bakken is 1447247135, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-19.