Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. STEPHEN MARRS PETTY M.D.
NPI 1366491029
Psychiatry & Neurology - Psychiatry in Mission Viejo, CA

Q: What is Stephen Petty's NPI number?

The NPI number for Stephen Petty is 1366491029. It was assigned to this individual provider in the NPPES registry on May 9, 2006.

Q: What is Stephen Petty's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Q: When was this NPI record last updated?

The NPPES record for Stephen Petty was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 09, 2006

27800 MEDICAL CENTER RD, SUITE 350, MISSION VIEJO, CA 92691(949) 364-5315(949) 364-6515 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About Dr. Stephen Marrs Petty M.d. NPPES

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

DR. STEPHEN MARRS PETTY M.D. (NPI 1366491029) is an individual psychiatry provider in Mission Viejo, California, licensed in California (G39238) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1366491029

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. STEPHEN MARRS PETTYCredential: M.D.

Location Address27800 MEDICAL CENTER RD, SUITE 350Mission Viejo, CA 92691-6410

Mailing Address27800 Medical Center Rd, Suite 350Mission Viejo, CA 92691-6410 · (949) 364-5315 · Fax (949) 364-6515

Phone(949) 364-5315

Fax(949) 364-6515

Sole ProprietorNo

Enumeration DateMay 9, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1366491029 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · G39238

Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

27800 MEDICAL CENTER RD, Mission Viejo, CA 92691

Open in Google Maps ↗

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.

THEODORE J. CALIENDO, M.D., A MEDICAL CORPORATION

Pediatrics

27800 MEDICAL CENTER RD, SUITE 204
MISSION VIEJO, CA 92691

Orange County (949) 364-3691

KENNETH K PADDIE A PROFESSIONAL CORP

Otolaryngology

27800 MEDICAL CENTER RD, SUITE 261
MISSION VIEJO, CA 92691

Orange County (949) 364-2555

MEDINA PEDIATRICS, INC.

Pediatrics (Neonatal-Perinatal Medicine)

27800 MEDICAL CENTER RD, SUITE 204
MISSION VIEJO, CA 92691

Orange County (949) 364-3532

REXINGER MEDICAL GROUP, INC.

Family Medicine

27800 MEDICAL CENTER RD, SUITE 461
MISSION VIEJO, CA 92691

Orange County (949) 364-5600

DR. BRETT MICHAEL WERTMAN M.D.

Internal Medicine (Cardiovascular Disease)

27800 MEDICAL CENTER RD, SUITE 222
MISSION VIEJO, CA 92691

Orange County (949) 276-2446

JACKSON MOSES, DDS, INC

Dentist (Oral and Maxillofacial Surgery)

27800 MEDICAL CENTER RD, 238
MISSION VIEJO, CA 92691

Orange County (949) 364-0220

BRITTANY DANIELLE FARMER ACSW

Social Worker (Clinical)

27800 MEDICAL CENTER RD
MISSION VIEJO, CA 92691

Orange County (949) 866-3600

DR. ANDREW CHANG

Dentist (Pediatric Dentistry)

27800 MEDICAL CENTER RD, SUITE 332
MISSION VIEJO, CA 92691

Orange County (949) 364-1171

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 Stephen Petty's NPI number?

The NPI number for Stephen Petty is 1366491029. It was assigned to this individual provider in the NPPES registry on May 9, 2006.

Where is Stephen Petty located?

Stephen Petty practices at 27800 Medical Center Rd Suite 350, Mission Viejo, CA 92691. The listed phone number is (949) 364-5315.

What is Stephen Petty's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Stephen Petty was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.