Sarah Joyce Mermelstein, MD

Key facts

NPI

1962689398

Entity type

Individual (NPI type 1)

Primary specialty

Internal Medicine Physician 207R00000X

License

2010015946 (MO)

Practice address

1 Brookings Dr
Saint Louis, MO 63130-4862

Phone

(314) 935-6666

Fax

(314) 696-1214

NPI assigned

Jan 28, 2008

Sex

Female

Sole proprietor

No

Organizations & group practices 5

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 1194765685
  Medicare reassignment NPD MO
• Habif Health and Wellness Center Student Health Clinic/Center · Saint Louis, MO · NPI 1558601518
  NPD
• Washington University Multi-Specialty Clinic/Center · Saint Louis, MO · NPI 1962442475
  NPD
• Caryn Garriga MD LLC Pediatrics Physician · Ellisville, MO · NPI 1174836415
  NPD (past) PEDIATRICS
• Washington University Multi-Specialty Clinic/Center · Saint Louis, MO · NPI 1134169568
  NPD (past)

Medicare participation

Medicare fee-for-service enrollment

Enrolled in MO

Eligible to order & refer

Part B services: Yes · DME: Yes · Home health: Yes · Power mobility devices: Yes · Hospice: Yes

Medicare enrollment records

National Provider Directory

Medicare enrollment (NPD)

Yes

Credentials

Doctor of Medicine

Practice roles

Locations

Specialties & licenses

Addresses

Other identifiers

Electronic endpoints

The complete NPPES record for this NPI in the NPI Registry API JSON format, last updated by the provider on Dec 8, 2025.

{
    "created_epoch": "1201478400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765152000000",
    "number": "1962689398",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412043",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742043",
            "telephone_number": "314-935-6666",
            "fax_number": "314-696-1214"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 BROOKINGS DR",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631304862",
            "telephone_number": "314-935-6666",
            "fax_number": "314-696-1214"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MERMELSTEIN",
        "first_name": "SARAH",
        "middle_name": "JOYCE",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-01-28",
        "last_updated": "2025-12-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "2010015946",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "204208805",
            "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": "1 Brookings Dr",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631304862",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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All providers in Saint Louis, MO · Internal Medicine Physician in Missouri