Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alger B Chapman III, MD PHD

Pediatrics Physician in San Mateo, CA · enumerated 2005.

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

National Provider Identifier

1437145216

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Registry record

Entity type Individual (Type 1)

Name Dr. Alger B Chapman III

Credential MD PHD

Sex Male

Practice address 50 S San Mateo Dr, Ste 260, San Mateo, CA, 94401

Phone (650) 579-6500

Fax (650) 579-1943

Enumeration date Sep 27, 2005

Last updated in NPPES Mar 9, 2020

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G064005 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
00G640050	Other	CA	BLUE SHIELD CA
ZZZ00797Z	Other	CA	BLUE SHIELD CA -GROUP ID

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 Alger Chapman?

The National Provider Identifier (NPI) for Alger Chapman is 1437145216, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alger Chapman practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-09.