Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William S. Mow, MD

Pediatrics Physician in Hayward, CA · enumerated 2006.

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

National Provider Identifier

1982782736

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Registry record

Entity type Individual (Type 1)

Name William S. Mow

Credential MD

Sex Male

Practice address 27400 Hesperian Blvd, Hayward, CA, 94545

Phone (510) 784-4000

Enumeration date Nov 1, 2006

Last updated in NPPES Dec 3, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A68331 (CA) 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
00A683310	Medicaid	CA	-

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

How do I verify William Mow's NPI record?

Cross-check NPI 1982782736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1982782736 active?

Yes, as of the latest NPPES snapshot, NPI 1982782736 is active (record last updated 2021-12-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-03.