Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory Warren Baldwin, MD

Pediatrics Physician in Vallejo, CA · enumerated 2006.

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

National Provider Identifier

1194828210

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Warren Baldwin

Credential MD

Sex Male

Practice address 243 Georgia Street, Suite B, Vallejo, CA, 94590

Phone (707) 556-8100

Fax (707) 556-8107

Enumeration date Sep 6, 2006

Last updated in NPPES Mar 2, 2015

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License G21457 (CA) 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 Gregory Baldwin?

The National Provider Identifier (NPI) for Gregory Baldwin is 1194828210, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Baldwin practice?

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

Other providers at this practice address

Browse all →

Mark Smith Family Medicine Physician · Vallejo, CA NPI 1588767602 Maricar Inigo Nurse Practitioner · Vallejo, CA NPI 1104929165 Ivana Pereira-Ambrose Nurse Practitioner · Vallejo, CA NPI 1356444848 Wasfa Jahangiri Family Medicine Physician · Vallejo, CA NPI 1215021175 Mija Berg Nurse Practitioner · Vallejo, CA NPI 1225123243 Catherine Heckert Family Nurse Practitioner · Vallejo, CA NPI 1013157353 Virginia Hens-Piazza Physician Assistant · Vallejo, CA NPI 1003121260

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-02.