Individual provider Active NPI

Ralph L Nachman, MD

  • Internal Medicine Physician
  • New York, NY
National Provider Identifier
1275620346
Registry record updated Sep 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
083906 Issued in NY
Practice address
520 E 70TH St # Starr-341
New York, NY 10021-9800
Phone
(212) 746-4720
Fax
(212) 746-3305
NPI assigned
Oct 9, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 11, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 083906 NY Primary
Hematology & Oncology Physician 207RH0003X 083906 NY
Medical Oncology Physician 207RX0202X 083906 NY

Addresses

Primary practice location

520 E 70TH St # Starr-341
New York, NY 10021-9800

Mailing address

520 E 70TH St # Starr-341
New York, NY 10021-9800
Phone (212) 746-0373

Other identifiers 1

IdentifierTypeStateIssuer
00487412MedicaidNY

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
083906NYMDSocial Worker

Practice roles

OrganizationSpecialtyStatusNew patients
Weill Medical College of Cornell Hematology & Oncology Past Accepting new patients

Organizations & group practices 1

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.

NPI Registry JSON

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

{
    "created_epoch": "1160352000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1275620346",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "520 E 70TH ST # STARR-341",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100219800",
            "telephone_number": "212-746-0373",
            "fax_number": "212-746-7481"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "520 E 70TH ST # STARR-341",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100219800",
            "telephone_number": "212-746-4720",
            "fax_number": "212-746-3305"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NACHMAN",
        "first_name": "RALPH",
        "middle_name": "L",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-10-09",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "083906",
            "primary": true
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "NY",
            "license": "083906",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "NY",
            "license": "083906",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00487412",
            "state": "NY"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.