Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Joseph Cullen, MD

Hospitalist Physician in Biddeford, ME · enumerated 2006.

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

National Provider Identifier

1679531552

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Registry record

Entity type Individual (Type 1)

Name Dr. William Joseph Cullen

Credential MD

Sex Male

Practice address 1 Medical Center Dr, Biddeford, ME, 04005

Phone (207) 283-7937

Fax (207) 283-7018

Enumeration date May 2, 2006

Last updated in NPPES Jul 15, 2025

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD22414 (ME) 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
8127032	Other	MD	MAMSI PROVIDE NUMBER
521186611	Other	MD	UNITED HEALTHCARE PROV #
1012963	Other	MD	CIGNA PROVIDER NUMBER
431791201	Medicaid	MD	-
4328547	Other	MD	AETNAPPO PROVIDER NUMBER
61947103	Other	MD	BSMD PROVIDER NUMBER
8127032	Other	MD	OPTIMUM CHOICE PROVIDER #
4328547	Other	MD	AETNA HMO PROVIDER NUMBER
8127032	Other	MD	ALLIANCE PROVIDER NUMBER
9070 0020	Other	MD	BSDC PROVIDER NUMBER
P16984	Other	MD	CAREFIRST POS PROVIDER #
8127032	Other	MD	MDIPA PROVIDER NUMBER

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 William Cullen?

The National Provider Identifier (NPI) for William Cullen is 1679531552, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Cullen practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-15.