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

Gilleann Marie Rivera, APRN

Family Nurse Practitioner in Walnut Creek, CA · enumerated 2023 · practices at Planned Parenthood Shasta Diablo Inc.

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

National Provider Identifier

1467234500

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Registry record

Entity type Individual (Type 1)

Name Gilleann Marie Rivera

Credential APRN

Sex Female

Practice address Walnut Creek, CA, 94596

Phone (925) 935-3010

Enumeration date Oct 13, 2023

Last updated in NPPES Oct 13, 2023

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 95025326 (CA) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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 specialty is Gilleann Rivera?

Gilleann Rivera 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.

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.

Other providers at this practice address

Browse all →

Planned Parenthood Shasta Diablo Inc Community Health Clinic/Center · Walnut Creek, CA NPI 1003974064 Jessica Seul Registered Nurse · Walnut Creek, CA NPI 1831682335 Nancy Lachance Registered Nurse · Walnut Creek, CA NPI 1518441690 Brenda Medina Registered Nurse · Walnut Creek, CA NPI 1528799475 Teresa Del Toro Gallegos Physician Assistant · Walnut Creek, CA NPI 1760267017 Fawnda Nguyen Registered Nurse · Walnut Creek, CA NPI 1730999004 Mariana Saravia Registered Nurse · Walnut Creek, CA NPI 1386507739

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-13.