Gregory Peter Cejas, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

2019022607 Issued in MO

Practice address

4444 Forest Park Ave
Ste 2600
Saint Louis, MO 63108-2212

Phone

(314) 286-1700

Fax

(314) 286-1730

NPI assigned

Jun 23, 2017

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO

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 1

Specialty

Psychiatry

Education

Other, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

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

• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1003856592

  MO

  Medicare reassignment Care Compare group
• Ozarks Medical Center

  • General Acute Care Hospital
  • West Plains, MO
  • NPI 1831115641
  NPD (past)

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

{
    "created_epoch": "1498176000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744675200000",
    "number": "1225558802",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "314-286-1700",
            "fax_number": "314-286-1730"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4444 FOREST PARK AVE",
            "address_2": "STE 2600",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631082212",
            "telephone_number": "314-286-1700",
            "fax_number": "314-286-1730"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CEJAS",
        "first_name": "GREGORY",
        "middle_name": "PETER",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-06-23",
        "last_updated": "2025-04-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "MO",
            "license": "2019022607",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200061871",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "4444 Forest Park Ave",
            "address_2": "Ste 2600",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631082212",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• All providers in Saint Louis, MO
• Psychiatry Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 15, 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.