Ian Alexander Mellis, MD, PHD

Primary specialty

Clinical Pathology PhysicianTaxonomy code 207ZC0006X

License

327229 Issued in NY

Practice address

622 W 168TH St
New York, NY 10032-3720

Phone

(212) 305-5697

NPI assigned

Apr 8, 2021

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

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

Pathology

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

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, Doctor of Philosophy

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/
• FHIR API: https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/

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.

• Trustees of Columbia University in the City of New York

  • Surgery Physician
  • New York, NY
  • NPI 1508266347
  Medicare reassignment Care Compare group NPD
• Trustees of Columbia University in the City of New York

  • Anesthesiology Physician
  • New York, NY
  • NPI 1477068971
  NPD
• Trustees of Columbia University in the City of New York

  • Internal Medicine Physician
  • New York, NY
  • NPI 1699289488
  NPD

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

• The New York and Presbyterian Hospital

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

  • Ambulance
  • New York, NY
  • NPI 1174628473

  Hospital

  Care Compare affiliation
• The New York and 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

  • 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": "1617840000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761264000000",
    "number": "1366022915",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "630 WEST 168TH ST",
            "address_2": "PH 1564W",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "10032"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "622 W 168TH ST",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100323720",
            "telephone_number": "212-305-5697"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MELLIS",
        "first_name": "IAN",
        "middle_name": "ALEXANDER",
        "name_prefix": "Dr.",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-08",
        "last_updated": "2025-10-24",
        "certification_date": "2025-10-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZC0006X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology",
            "state": "NY",
            "license": "327229",
            "primary": true
        },
        {
            "code": "207ZB0001X",
            "taxonomy_group": "",
            "desc": "Pathology, Blood Banking & Transfusion Medicine",
            "state": "NY",
            "license": "327229",
            "primary": false
        },
        {
            "code": "207ZP0104X",
            "taxonomy_group": "",
            "desc": "Pathology, Chemical Pathology",
            "state": "NY",
            "license": "327229",
            "primary": false
        },
        {
            "code": "207ZP0105X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology/Laboratory Medicine",
            "state": "NY",
            "license": "327229",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Guardson Cloma Mellijor
• Kristen M Mellin, PA-C
• Mark V. Mellinger, PHD
• Ingo K. Mellinghoff, M.D.
• Claude Ann Mellins, PHD
• Elisa Mary Mello, DDS
• Monique Mello, FNP
• Wagner B Mello
• Danielle Mellon, NP
• Megan Catherine Mellon, NP

• Clinical Pathology Physician in New York, NY
• Providers in New York, NY by specialty
• Clinical Pathology Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 24, 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.