NPIMap

Individual provider Active NPI

Melissa W Sum, MD

  • Endocrinology, Diabetes & Metabolism Physician
  • New York, NY
National Provider Identifier
1326369703
Registry record updated Apr 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Endocrinology, Diabetes & Metabolism PhysicianTaxonomy code 207RE0101X
License
274990 Issued in NY
Practice address
902 Broadway Ste 1603
New York, NY 10010-6029
Phone
(212) 379-4920
Fax
(212) 379-4923
NPI assigned
Jun 19, 2010
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 23, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Endocrinology, Diabetes & Metabolism Physician 207RE0101X 274990 NY Primary

Addresses

Primary practice location

902 Broadway Ste 1603
New York, NY 10010-6029

Mailing address

902 Broadway Ste 1603
New York, NY 10010-6029
Phone (212) 379-4920

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.
Opted out of Medicare
Yes, effective Feb 23, 2026 through Feb 23, 2028

Care Compare profile

Medicare Care Compare
Specialty
Endocrinology
Education
Columbia University College of Physicians and Surgeons, 2010
Medicare assignment
May accept Medicare assignment
Telehealth
Offers telehealth services

Practice addresses (Care Compare)

14 Wall St
FL 9
New York, NY 10005-2178

Hospital & facility affiliations

  • NYU Langone Hospitals Hospital, New York, NY, CCN 330214
  • Hospital for Special Surgery Hospital, New York, NY, CCN 330270

Merit-based Incentive Payment System (MIPS)

Final score
90.8 of 100Reported as group
Quality
91.79
Promoting interoperability
100
Improvement activities
40
Cost
75.18

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
274990NYMDEndocrinology, Diabetes & Metabolism Physician

Practice roles

OrganizationSpecialtyStatusNew patients
New York University CurrentSince Aug 1, 2017 Accepting new patients
New York University CurrentSince Aug 1, 2017 Accepting new patients

Locations

222 E 41st St
Fl 17
New York, NY 10017
Phone (212) 481-1350

222 E 41st St
Fl 23
New York, NY 10017
Phone (212) 481-1350

14 Wall St
Fl 9
Wall Street, NY 10005
Phone (646) 501-3224

Networks

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

Interoperability endpoints

  • Direct secure messaging: melissa.sum.1@28513.direct.athenahealth.com
  • Direct secure messaging: msum211965@nyumc.direct-ci.com
  • Direct secure messaging: msum683236@nychhc.direct-ci.com

Organizations & group practices 2

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 17

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

View all 17

NPI Registry JSON

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

{
    "created_epoch": "1276905600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776902400000",
    "number": "1326369703",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "902 BROADWAY STE 1603",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100106029",
            "telephone_number": "212-379-4920",
            "fax_number": "212-379-4923"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "902 BROADWAY STE 1603",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100106029",
            "telephone_number": "212-379-4920",
            "fax_number": "212-379-4923"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SUM",
        "first_name": "MELISSA",
        "middle_name": "W",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-06-19",
        "last_updated": "2026-04-23",
        "certification_date": "2026-04-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RE0101X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": "NY",
            "license": "274990",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New York, NY

Sources for this page

Verify at the official NPI Registry.