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Dr. William D Welsh, D.O.

Geriatric Medicine (Internal Medicine) Physician in Whittier, CA · enumerated 2006.

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

National Provider Identifier

1568401255

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Registry record

Entity type Individual (Type 1)
Name Dr. William D Welsh
Credential D.O.
Sex Male
Practice address 7624 Painter Ave, #100, Whittier, CA, 90602
Phone (562) 945-9333
Fax (562) 945-8533
Enumeration date Jun 6, 2006
Last updated in NPPES Sep 1, 2009

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 20A4272 (CA) Secondary
207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 20A4272 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

Where does William Welsh practice?
The practice location on file with NPPES is in Whittier, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for William Welsh?
The National Provider Identifier (NPI) for William Welsh is 1568401255, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-01.