Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Judith B Hartman, MD

Specialist in Walnut Creek, CA · enumerated 2005.

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

National Provider Identifier

1790785699

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Registry record

Entity type Individual (Type 1)

Name Dr. Judith B Hartman

Credential MD

Sex Female

Practice address 2121 Ygnacio Valley Rd, Bldg. E, Suite 101, Walnut Creek, CA, 94598

Phone (925) 945-6600

Fax (925) 945-7842

Enumeration date Jul 21, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers · License G38913 (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

Where does Judith Hartman practice?

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

What is the NPI number for Judith Hartman?

The National Provider Identifier (NPI) for Judith Hartman is 1790785699, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.