Ryan Michael Greytak, M.D.

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

A126390 Issued in CA

Practice address

4855 E Cesar Chavez Blvd
Fresno, CA 93727-3811

Phone

(559) 255-8395

NPI assigned

Mar 8, 2010

Last updated

Apr 2, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Specialty

Psychiatry

Education

University of Pittsburgh School of Medicine, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• The Fresno Center

  • Psychiatry Physician
  • Fresno, CA
  • NPI 1164741070
  NPD
• The Fresno Center

  • Psychiatry Physician
  • Fresno, CA
  • NPI 1437347721
  NPD
• The Fresno Center

  • Adult Day Care Clinic/Center
  • Fresno, CA
  • NPI 1770197659
  NPD
• Exodus Recovery, Inc.

  • Community/Behavioral Health Agency
  • Orange, CA
  • NPI 1326641671
  NPD (past)
• The Fresno Center

  • Marriage & Family Therapist
  • Fresno, CA
  • NPI 1174710651

  Psychiatry

  NPD (past)

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

{
    "created_epoch": "1268006400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1743552000000",
    "number": "1750604617",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4855 E CESAR CHAVEZ BLVD",
            "city": "FRESNO",
            "state": "CA",
            "postal_code": "937273811",
            "telephone_number": "559-255-8395"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4855 E CESAR CHAVEZ BLVD",
            "city": "FRESNO",
            "state": "CA",
            "postal_code": "937273811",
            "telephone_number": "559-255-8395"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4879 E Kings Canyon Rd",
            "address_purpose": "LOCATION",
            "city": "Fresno",
            "state": "CA",
            "postal_code": "937273811",
            "country_code": "US",
            "telephone_number": "559-255-8395",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6121 N Thesta St Ste 304",
            "address_purpose": "LOCATION",
            "city": "Fresno",
            "state": "CA",
            "postal_code": "937105294",
            "country_code": "US",
            "telephone_number": "559-538-1735",
            "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": "559-512-8650",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "265 S Anita Dr Ste 102-104",
            "address_purpose": "LOCATION",
            "city": "Orange",
            "state": "CA",
            "postal_code": "928683355",
            "country_code": "US",
            "telephone_number": "714-410-3500",
            "fax_number": "714-410-3526",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "4871 E Cesar Chavez Blvd",
            "address_purpose": "LOCATION",
            "city": "Fresno",
            "state": "CA",
            "postal_code": "937273811",
            "country_code": "US",
            "telephone_number": "559-255-8395",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GREYTAK",
        "first_name": "RYAN",
        "middle_name": "MICHAEL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2010-03-08",
        "last_updated": "2025-04-02",
        "certification_date": "2025-03-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CA",
            "license": "A126390",
            "primary": true
        },
        {
            "code": "2084P0805X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Geriatric Psychiatry",
            "state": "CA",
            "license": "A126390",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Preet Singh Grewal
• Rajpreeti Grewal
• Ritu K. Grewal, NP-C
• Jatinder Paul Grewall, M.D.
• Reginald Douglas Grey Jr., ORDAINED PASTOR
• Sharon Greywolf
• Crystal Ladonna Gridiron
• Nuk Grier-Ware
• F. Ndidi Uche Griffin-Myers IV, F.N.P.
• Jennifer Griffin-Valeri, N.P.

• Psychiatry Physician in Fresno, CA
• Providers in Fresno, CA by specialty
• Psychiatry Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 2, 2025; 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.