Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Alan Dulin, MD

Specialist in Plano, TX · enumerated 2005.

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

National Provider Identifier

1851387468

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. William Alan Dulin

Credential MD

Sex Male

Practice address 6020 W Plano Pkwy, Plano, TX, 75093

Phone (972) 543-2477

Fax (972) 543-2499

Enumeration date Sep 20, 2005

Last updated in NPPES Dec 21, 2020

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MDL4350 (TX) Primary

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

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 Dulin?

The National Provider Identifier (NPI) for William Dulin is 1851387468, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Dulin practice?

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

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-21.