Marissa McCay, M.D.

Primary specialty

Sports Medicine (Internal Medicine) PhysicianTaxonomy code 207RS0010X

License

325177 Issued in NY

Practice address

1111 Westchester Ave
West Harrison, NY 10604-3525

Phone

(212) 305-9137

Fax

(212) 304-7050

NPI assigned

Apr 14, 2014

Last updated

Oct 16, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

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

Family Practice

Education

Other, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Trustees of Columbia University in the City of New YorkGroup PAC ID 8527972546, 2,262 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• New York-Presbyterian Hospital Hospital, New York, NY, CCN 330101

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

• Healthfirst Medicare Network H5989
• Healthfirst Medicare Network H1722
• Healthfirst Medicare Network H9678
• Healthfirst Medicare Network H3359

Interoperability endpoints

• Direct secure messaging: aiw9015@direct.nyp.org
• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/
• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/

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.

• Trustees of Columbia University in the City of New York

  • Surgery Physician
  • New York, NY
  • NPI 1508266347

  Pediatrics

  Medicare reassignment Care Compare group NPD
• Westchester Health Medical, P.C.

  • Allergy & Immunology Physician
  • Katonah, NY
  • NPI 1386188647

  Pediatrics

  Medicare reassignment NPD
• Trustees of Columbia University in the City of New York

  • Internal Medicine Physician
  • New York, NY
  • NPI 1699289488
  NPD
• Trustees of Columbia University in the City of New York

  • Internal Medicine Physician
  • New York, NY
  • NPI 1861907321
  NPD
• Westchester Health Medical, P.C.

  • Durable Medical Equipment & Medical Supplies
  • Mount Kisco, NY
  • NPI 1598203911
  NPD

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

• The New York and Presbyterian Hospital

  dba New York Presbyterian Hospital

  • General Acute Care Hospital
  • New York, NY
  • NPI 1144504044
  Care Compare affiliation
• The New York and Presbyterian Hospital

  dba New York-Presbyterian Hospital

  • Ambulance
  • New York, NY
  • NPI 1174628473

  Hospital

  Care Compare affiliation
• The New York and Presbyterian Hospital

  dba NewYork-Presbyterian Hospital

  • General Acute Care Hospital
  • New York, NY
  • NPI 1194832477
  Care Compare affiliation
• The New York and Presbyterian Hospital

  • General Acute Care Hospital
  • Bronxville, NY
  • NPI 1780196345
  Care Compare affiliation
• The New York and Presbyterian Hospital

  dba New York-Presbyterian Hospital

  • General Acute Care Hospital
  • New York, NY
  • NPI 1952332801
  Care Compare affiliation

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

{
    "created_epoch": "1397433600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760572800000",
    "number": "1972922441",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "622 W 168TH ST PH 111130",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100323720",
            "telephone_number": "212-305-9137",
            "fax_number": "212-304-7050"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1111 WESTCHESTER AVE",
            "city": "WEST HARRISON",
            "state": "NY",
            "postal_code": "106043525",
            "telephone_number": "212-305-9137",
            "fax_number": "212-304-7050"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "161 Fort Washington Ave",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100323729",
            "country_code": "US",
            "telephone_number": "212-305-4565",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "51 W 51st St",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100196113",
            "country_code": "US",
            "telephone_number": "212-305-4565",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MCCAY",
        "first_name": "MARISSA",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-04-14",
        "last_updated": "2025-10-16",
        "certification_date": "2025-10-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RS0010X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sports Medicine",
            "state": "NY",
            "license": "325177",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• John Maloney, D.C
• Vito Marrero, M.D.
• Michael Stevenson May, MD
• Karen Mayo, INHC, PT, SN
• Ross Eliott Mazo, M.D
• Mary Helen McDonald, REGISTERED NURSE
• Daniela McShane, M.A. CCC-SLP
• Memorial Sloan Kettering Cancer Center (Memorial Hospital OPD At Harrison)
• Arwa Mohamed, PHARMD
• Parisa Momtaz, MD

• Sports Medicine (Internal Medicine) Physician in West Harrison, NY
• Providers in West Harrison, NY by specialty
• Sports Medicine (Internal Medicine) Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 16, 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.