Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Simpson, PA-C

Physician Assistant in Brawley, CA · enumerated 2016.

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

National Provider Identifier

1285087577

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Registry record

Entity type Individual (Type 1)

Name Mark Simpson

Credential PA-C

Sex Male

Practice address 207 W Legion Rd, Brawley, CA, 92227

Phone (760) 351-3333

Enumeration date Jul 21, 2016

Last updated in NPPES Oct 14, 2020

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 10002695A (IN) 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 NPI 1285087577 active?

Yes, as of the latest NPPES snapshot, NPI 1285087577 is active (record last updated 2020-10-14).

How do I verify Mark Simpson's NPI record?

Cross-check NPI 1285087577 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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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-14.