Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Jennifer Lenora Westerman, FNP

Family Nurse Practitioner in Martinez, CA · enumerated 2006.

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

National Provider Identifier

1154404101

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Registry record

Entity type Individual (Type 1)

Name Jennifer Lenora Westerman

Credential FNP

Sex Female

Practice address Martinez, CA, 94553

Phone (925) 370-5110

Fax (925) 370-5142

Enumeration date Oct 23, 2006

Last updated in NPPES Mar 25, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License RN324848 (CA) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Jennifer Westerman?

Jennifer Westerman is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Larry Kean Psychiatry Physician · Martinez, CA NPI 1154318830 Mehrdad Mansouri Hospitalist Physician · Martinez, CA NPI 1376532747 Howard Shaw Family Nurse Practitioner · Martinez, CA NPI 1497730907 Cynthia Hellman-Wylie Family Nurse Practitioner · Martinez, CA NPI 1093793127 Kristine Girard Psychiatry Physician · Martinez, CA NPI 1124093208 Kevin Beadles Ophthalmology Physician · Martinez, CA NPI 1881663714 Constantine Nicholas Orthopaedic Surgery Physician · Martinez, CA NPI 1295790228 Laura Keels Family Nurse Practitioner · Martinez, CA NPI 1619925286

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-25.