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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. MARK WINSTON BROWN M.D.
NPI 1982663050
Specialist in Tustin, CA

Active since March 18, 2006
18102 IRVINE BLVD, TUSTIN, CA 92780(714) 508-4123(714) 508-4134 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Mark Winston Brown M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK WINSTON BROWN M.D. (NPI 1982663050) is an individual specialist in Tustin, California, licensed in California (G35526) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1982663050
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. MARK WINSTON BROWNCredential: M.D.
Location Address18102 IRVINE BLVDTustin, CA 92780-3423
Mailing Address10602 Grove Oak DrSanta Ana, CA 92705-2589
Phone(714) 508-4123
Fax(714) 508-4134
Sole ProprietorNo
Enumeration DateMarch 18, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1982663050 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · G35526
Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

18102 IRVINE BLVD, Tustin, CA 92780
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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CYNTHIA ANN COHEN RN,FNP-C
Nurse Practitioner (Family)
18102 IRVINE BLVD, SUITE 105
TUSTIN, CA 92780
Orange County (714) 832-0510
ROGER MCWILLIAMS M.D.
Family Medicine
18102 IRVINE BLVD, SUITE 105
TUSTIN, CA 92780
Orange County (714) 832-0510
DR. UZMA NASIM M.D
Psychiatry & Neurology (Neurology)
18102 IRVINE BLVD, SUITE 206
TUSTIN, CA 92780
Orange County (714) 730-2511
MIGUEL A DOMINGUEZ M.D.
Anesthesiology (Pain Medicine)
18102 IRVINE BLVD, SUITE 208
TUSTIN, CA 92780
Orange County (714) 371-9000
BRETT STEVEN EIRICH PT
Physical Therapist
18102 IRVINE BLVD, SUITE 207
TUSTIN, CA 92780
Orange County (714) 505-2966
JASLEEN K BRAR DDS
Dentist
18102 IRVINE BLVD, STE 205
TUSTIN, CA 92780
Orange County (714) 731-5656
DIMPLE MANCHANDIA
Dentist (General Practice)
18102 IRVINE BLVD, SUITE 200
TUSTIN, CA 92780
Orange County (714) 832-7220
DR. MICHAEL J. MCCARTNEY D.D.S.
Dentist (Pediatric Dentistry)
18102 IRVINE BLVD, STE. 101
TUSTIN, CA 92780
Orange County (714) 838-9120

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Brown's NPI number?

The NPI number for Mark Brown is 1982663050. It was assigned to this individual provider in the NPPES registry on March 18, 2006.

Where is Mark Brown located?

Mark Brown practices at 18102 Irvine Blvd, Tustin, CA 92780. The listed phone number is (714) 508-4123.

What is Mark Brown's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Mark Brown was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.