NPIMap

Individual provider Active NPI

Matthew Buchalter, MD

  • Internal Medicine Physician
  • New York, NY
National Provider Identifier
1346264405
Registry record updated Jan 4, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
243956 Issued in NY
Practice address
12 W 72ND St
New York, NY 10023-4163
Phone
(646) 962-7800
NPI assigned
Jul 26, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 4, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 243956 NY Primary

Addresses

Primary practice location

12 W 72ND St
New York, NY 10023-4163

Mailing address

12 W 72ND St
New York, NY 10023-4163
Phone (646) 962-7800

Electronic endpoints 6

TypeEndpointUseAffiliation
Direct Messaging Address mbuchalter9405@direct.HSS.edu Direct
FHIR URL https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/ Direct
FHIR URL https://https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/ Health Information Exchange (HIE)
Direct Messaging Address mlb9010@direct.nyp.org Direct
FHIR URL https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/DSTU2 Direct
FHIR URL https://https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/ Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20071018000638 NY Practitioner - Internal Medicine 6406851401 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
New York University School of Medicine, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Weill Medical College of CornellGroup PAC ID 6800709023, 2,023 clinicians

Practice addresses (Care Compare)

12 W 72ND St
New York, NY 10023-4163
Phone (646) 962-7800

535 E 70TH St
New York, NY 10021-4823
Phone (212) 774-7598

Hospital & facility affiliations

  • Hospital for Special Surgery Hospital, New York, NY, CCN 330270

Merit-based Incentive Payment System (MIPS)

Final score
75 of 100Reported as group

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
243956NYMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Weill Medical College of Cornell Internal Medicine CurrentSince Jan 1, 2026 Accepting new patients
New York Society for the Relief of Ruptured & Crippled Maintaining CurrentSince Mar 1, 2015 Accepting new patients
Weill Medical College of Cornell CurrentSince Jan 1, 2026 Accepting new patients
New York Society for the Relief of the Ruptured and Crippled Maintaini Past Accepting new patients
Matthew Buchalter Internal Medicine PastSince Jan 1, 1990 Accepting new patients
The Miriam Hospital Past Accepting new patients

Locations

535 E 70th St
New York, NY 10021

12 W 72nd St
New York, NY 10023
Phone (212) 746-7800

Interoperability endpoints

  • FHIR API: https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/DSTU2
  • Direct secure messaging: mbuchalter9405@direct.hss.edu
  • Direct secure messaging: mlb9010@direct.nyp.org
  • FHIR API: https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/

Organizations & group practices 7

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.

Hospital & facility affiliations 10

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

NPI Registry JSON

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

{
    "created_epoch": "1153872000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767484800000",
    "number": "1346264405",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12 W 72ND ST",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100234163",
            "telephone_number": "646-962-7800"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "12 W 72ND ST",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100234163",
            "telephone_number": "646-962-7800"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BUCHALTER",
        "first_name": "MATTHEW",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-26",
        "last_updated": "2026-01-04",
        "certification_date": "2026-01-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "243956",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mbuchalter9405@direct.HSS.edu",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "ccda",
            "address_1": "535 E 70th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100214898",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "ccda",
            "address_1": "535 E 70th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100214898",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/R4/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "12 W 72nd St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100234163",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mlb9010@direct.nyp.org",
            "affiliation": "N",
            "endpointDescription": "Direct Address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct Address",
            "address_1": "12 W 72nd St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100234163",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0927.epichosted.com/FHIRProxy/api/FHIR/DSTU2",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "ccda",
            "address_1": "535 E 70th St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100214898",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://https://epicproxy-pub.et1089.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "N",
            "endpointDescription": "FHIR",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "FHIR",
            "address_1": "12 W 72nd St",
            "city": "New York",
            "state": "NY",
            "country_code": "US",
            "postal_code": "100234163",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.