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

Dr. Gilbert M. Simas, MD

Individual provider Psychiatry Physician · NPI 1497802383

Dr. Gilbert M. Simas, MD practises Psychiatry in Los Angeles, California. Qualified in 2004, 22 years ago. Practices with Forefront-Rosenzweig Medical Services Professional Corporation, a 34-clinician group, works from 7 locations, accepts Medicare assignment and offers telehealth. Licensed in Arizona, California, Colorado and Oregon and 1 more.

Years since qualifying
22
Licensed in
AZ, CA, CO, OR, WA
In the registry since
2007
Specialties on file
5
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

6500 Wilshire Blvd Fl 19
Los Angeles, CA 90048-4920
Phone: (805) 764-9651
Fax: (747) 330-1670
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (6)

  • 1520 E Pima St, Phoenix, AZ 85034-4639 — (602) 407-6280
  • 4411 E Kings Canyon Rd, Fresno, CA 93702-3604 — (559) 600-9180
  • 3133 N Millbrook Ave, Fresno, CA 93703-1425 — (559) 600-9180
  • 8931 Huron St, Thornton, CO 80260-6806 — (303) 853-3500
  • 980 Se Pine St, Portland, OR 97214-2598 — (971) 710-0082
  • 4526 Federal Ave, Everett, WA 98203-2132 — (425) 349-6200

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence C178910 (CA)
Psychiatry Physician Taxonomy 2084P0800X · Licence DR.0068674 (CO)
Psychiatry Physician Taxonomy 2084P0800X · Licence 46439 (AZ)
Addiction Psychiatry Physician Taxonomy 2084P0802X · Licence MD60044426 (WA)
Psychiatry Physician Taxonomy 2084P0800X · Licence LL18197 (OR)

Record details

NPI number1497802383
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 4, 2007
Last updated in NPPESJuly 2, 2026
Certification dateJuly 2, 2026

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Also practisesNEUROLOGY
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Forefront-Rosenzweig Medical Services Professional Corporation — 34 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations6 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients173
Services billed 610 a service is one billed item, such as a visit, a test or a procedure
Average patient age53

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Forefront-Rosenzweig Medical Services Professional Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 34 clinicians in the practice; 12 are shown here.

Other providers in Los Angeles