NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Wellah Marie Sombilla San Buenaventura

Gerontology Nurse Practitioner in Atwater, CA · enumerated 2019 · practices at Atwater Medical Group.

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

National Provider Identifier

1548806953

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Wellah Marie Sombilla San Buenaventura
Sex Female
Practice address 1775 3rd St, Atwater, CA, 95301
Phone (209) 358-5611
Enumeration date Nov 20, 2019
Last updated in NPPES Nov 20, 2019

Taxonomy & licenses

363LG0600X Gerontology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95013309 (CA) Primary

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

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 Wellah Marie San Buenaventura?
Wellah Marie San Buenaventura is registered in NPPES with the primary taxonomy of Gerontology Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-11-20.