Individual provider Active NPI

Gillian V Kupakuwana-Suk, M.D., PHD

  • Hematology & Oncology Physician
  • New Haven, CT
National Provider Identifier
1851748438
Registry record updated Sep 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
298769 Issued in NY
Practice address
15 York St
Ynhh Dept of Medicine, LMP 1092
New Haven, CT 06510-3221
Phone
(203) 688-5555
NPI assigned
May 24, 2016
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 17, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X 298769 NY Primary
Internal Medicine Physician 207R00000X 298769 NY

Addresses

Primary practice location

15 York St
Ynhh Dept of Medicine, LMP 1092
New Haven, CT 06510-3221

Mailing address

Dept. of Medicine Medical Service Group
750 E. Adams St.
Syracuse, NY 13210
Phone (315) 464-8200

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20191002000649 NY Practitioner - HospitalistPractitioner - Internal Medicine 3072807676 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
Columbia University College of Physicians and Surgeons, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

750 E Adams St
Syracuse, NY 13210-2306
Phone (315) 464-5240

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
86.4 of 100Reported as group
Quality
72.79
Improvement activities
40
Cost
71.22

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Department of Medicine Medical Serv GRP at Suny HLTH Sci Ctr Syr in Internal Medicine CurrentSince Sep 2, 2025 Accepting new patients
Department of Medicine Medical Service Group Hematology & Oncology CurrentSince Sep 2, 2025 Accepting new patients
Apogee Medical Group, New York, PC Internal Medicine CurrentSince Sep 1, 2019 Accepting new patients
Suny Health Science Center at Syracuse Past Accepting new patients
Samaritan Medical Center Past Accepting new patients

Locations

515 Main St
Olean, NY 14760
Phone (716) 373-2600

4900 Broad Rd
Rm 1139
Syracuse, NY 13215
Phone (315) 492-5555

750 E Adams St
Syracuse, NY 13210
Phone (315) 464-4363

830 Washington St
Watertown, NY 13601
Phone (315) 785-4000

Interoperability endpoints

  • Direct secure messaging: gkupakuwana171725@direct.upstate.edu

Organizations & group practices 5

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 1

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": "1464048000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1758067200000",
    "number": "1851748438",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "DEPT. OF MEDICINE MEDICAL SERVICE GROUP",
            "address_2": "750 E. ADAMS ST.",
            "city": "SYRACUSE",
            "state": "NY",
            "postal_code": "13210",
            "telephone_number": "315-464-8200",
            "fax_number": "315-464-8206"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15 YORK ST",
            "address_2": "YNHH DEPT OF MEDICINE, LMP 1092",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103221",
            "telephone_number": "203-688-5555"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KUPAKUWANA-SUK",
        "first_name": "GILLIAN",
        "middle_name": "V",
        "name_prefix": "Dr.",
        "credential": "M.D., PHD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2016-05-24",
        "last_updated": "2025-09-17",
        "certification_date": "2025-09-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "NY",
            "license": "298769",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "298769",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in New Haven, CT

Sources for this page

Verify at the official NPI Registry.