Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin Ross Frimmer, MS, PA-C

Physician Assistant in San Luis Obispo, CA · enumerated 2016.

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

National Provider Identifier

1104374883

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Registry record

Entity type Individual (Type 1)

Name Benjamin Ross Frimmer

Credential MS, PA-C

Sex Male

Practice address 777 E Foothill Blvd, San Luis Obispo, CA, 93405

Phone (805) 762-4348

Fax (805) 541-1167

Enumeration date Sep 12, 2016

Last updated in NPPES Jul 31, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 53749 (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.

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Frequently asked questions

Is NPI 1104374883 active?

Yes, as of the latest NPPES snapshot, NPI 1104374883 is active (record last updated 2025-07-31).

How do I verify Benjamin Frimmer's NPI record?

Cross-check NPI 1104374883 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Ashley Mishra Family Nurse Practitioner · San Luis Obispo, CA NPI 1235648171

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-31.