Gilbert M. Simas, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

C178910 Issued in CA

Practice address

6500 Wilshire Blvd FL 19
Los Angeles, CA 90048-4920

Phone

(805) 764-9651

Fax

(747) 330-1670

NPI assigned

Jan 4, 2007

Last updated

Sep 29, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 6

Addresses

Other names 1

• Dr. Gilbert Manuel Simas Other name

Medicare fee-for-service enrollment

Enrolled in WA, OR, IA, AZ, CO, CA6 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 6

Specialty

PsychiatryAlso: Neurology

Education

Other, 2004

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Forefront-Rosenzweig Medical Services Professional CorporationGroup PAC ID 1052697455, 34 clinicians

Rainier Springs Physician Group LLCGroup PAC ID 0547514549, 7 clinicians

Integrative Psychiatry a Medical CorporationGroup PAC ID 4587057286, 8 clinicians

Pacific Heritage Medical Group IncGroup PAC ID 7517284029, 62 clinicians

County of Santa ClaraGroup PAC ID 1254244973, shared by 46 NPIs, 1,000 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Santa Clara Valley Medical Center Hospital, San Jose, CA, CCN 050038
• Memorial Hospital Los Banos Hospital, Los Banos, CA, CCN 050528

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Arts, Doctor of Medicine

State licenses

Practice roles

Locations (25 of 38)

Interoperability endpoints

• Direct secure messaging: gsimas@yourcarecommunity.org
• Direct secure messaging: gsimas193719@santaclaravalley.direct-ci.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Integrative Psychiatry a Medical Corporation

  • Psychiatry Physician
  • Laguna Niguel, CA
  • NPI 1720268980
  Medicare reassignment Care Compare group NPD
• Forefront-Rosenzweig Medical Services Professional Corporation

  • Psychiatry Physician
  • Dallas, TX
  • NPI 1588101745

  OR, WA

  Medicare reassignment Care Compare group NPD
• Rainier Springs Physician Group, LLC

  • Neurology Physician
  • Vancouver, WA
  • NPI 1306321237

  Psychiatry

  Medicare reassignment Care Compare group NPD
• Pacific Heritage Medical Group Inc

  • Geriatric Psychiatry Physician
  • Westlake Village, CA
  • NPI 1467899450
  Medicare reassignment Care Compare group
• County of Fresno

  dba Fresno County Department of Behavioral Health

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Fresno, CA
  • NPI 1770538001
  Medicare reassignment NPD
• County of Santa Clara

  dba SCVMC Physician Services

  • Anesthesiology Physician
  • San Jose, CA
  • NPI 1588721500
  Medicare reassignment NPD
• County of Santa Clara

  dba Valley Health Center Alexian

  • Federally Qualified Health Center (FQHC)
  • San Jose, CA
  • NPI 1629301346
  Medicare reassignment NPD
• County of Santa Clara

  dba Josefina Narvaez Mental Health Center MH Aoa

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • San Jose, CA
  • NPI 1699885079
  Medicare reassignment NPD
• Access Telecare, PLLC

  • Internal Medicine Physician
  • Dallas, TX
  • NPI 1013303080

  OR, Psychiatry, WA

  Medicare reassignment NPD
• American Behavioral Health Systems, Inc.

  • Substance Abuse Rehabilitation Facility
  • Spokane Valley, WA
  • NPI 1962991661
  Medicare reassignment NPD
• Asana Integrated Medical Group PC

  • Psychiatry Physician
  • Sioux Falls, SD
  • NPI 1396783379

  OR

  Medicare reassignment NPD
• Bay Area Hospital District

  dba Bay Area Hospital

  • General Acute Care Hospital
  • Coos Bay, OR
  • NPI 1225016561
  Medicare reassignment NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• County of Santa Clara

  dba Inpatient Acute/Outpatient Facility Services

  • General Acute Care Hospital
  • San Jose, CA
  • NPI 1063406551
  Care Compare affiliation
• Sutter Valley Hospitals

  dba Memorial Hospital Los Banos

  • General Acute Care Hospital
  • Los Banos, CA
  • NPI 1366896300
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1167868800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790640000000",
    "number": "1497802383",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2747 PARADISE RD UNIT 2105",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891099065",
            "telephone_number": "702-575-4110"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6500 WILSHIRE BLVD FL 19",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900484920",
            "telephone_number": "805-764-9651",
            "fax_number": "747-330-1670"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3133 N Millbrook Ave",
            "address_purpose": "LOCATION",
            "city": "Fresno",
            "state": "CA",
            "postal_code": "937031425",
            "country_code": "US",
            "telephone_number": "559-600-9180",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "980 SE Pine St",
            "address_purpose": "LOCATION",
            "city": "Portland",
            "state": "OR",
            "postal_code": "972142598",
            "country_code": "US",
            "telephone_number": "971-710-0082",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4526 Federal Ave",
            "address_purpose": "LOCATION",
            "city": "Everett",
            "state": "WA",
            "postal_code": "982032132",
            "country_code": "US",
            "telephone_number": "425-349-6200",
            "fax_number": "425-349-6887",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1520 E Pima St",
            "address_purpose": "LOCATION",
            "city": "Phoenix",
            "state": "AZ",
            "postal_code": "850344639",
            "country_code": "US",
            "telephone_number": "602-407-6280",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4411 E Kings Canyon Rd",
            "address_purpose": "LOCATION",
            "city": "Fresno",
            "state": "CA",
            "postal_code": "937023604",
            "country_code": "US",
            "telephone_number": "559-600-9180",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8931 Huron St",
            "address_purpose": "LOCATION",
            "city": "Thornton",
            "state": "CO",
            "postal_code": "802606806",
            "country_code": "US",
            "telephone_number": "303-853-3500",
            "fax_number": "303-853-3702",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIMAS",
        "first_name": "GILBERT",
        "middle_name": "M.",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-01-04",
        "last_updated": "2026-09-29",
        "certification_date": "2026-09-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CO",
            "license": "DR.0068674",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "AZ",
            "license": "46439",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "FL",
            "license": "ME179391",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "C178910",
            "primary": true
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "OR",
            "license": "LL18197",
            "primary": false
        },
        {
            "code": "2084P0802X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Addiction Psychiatry",
            "state": "WA",
            "license": "MD60044426",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "GILBERT",
            "last_name": "SIMAS",
            "middle_name": "MANUEL",
            "prefix": "DR.",
            "credential": "MD",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

• Grace Sima, PHARM.D.
• Amanda Sarah Siman
• Brenda Ester Siman, PA
• Monica G Simanovsky, LCSW
• Genevieve Giselle Simari, PSY.D
• Anabelle Simbajon
• Simbar Medical Supply
• Oz Simel, D.D.S., MD
• Raul Gabriel Simental-Pizarro, M.D.
• Jorge Antonio Simental, MT

• Psychiatry Physician in Los Angeles, CA
• Providers in Los Angeles, CA by specialty
• Psychiatry Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.