Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Matthew O'Brien, MD

Individual provider Psychiatry Physician · NPI 1376002600

Matthew O'Brien, MD is a Psychiatry in Atascadero, California. Qualified in 2019, 7 years ago. Practices with Department of State Hospitals, a 276-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Licensed in
CA
In the registry since
2019
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

10333 El Camino Real
Atascadero, CA 93422-5808
Phone: (805) 468-2000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 8019 S. Compton Ave, Los Angeles, CA 90001 — (323) 586-7333

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 180914 (CA)

Record details

NPI number1376002600
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 16, 2019
Last updated in NPPESSeptember 28, 2023
Certification dateSeptember 28, 2023
Mailing address8019 S. Compton Ave, Los Angeles, CA 90001

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Department Of State Hospitals — 276 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Atascadero