Individual provider Active NPI

Joanna Grabowski, MD

  • Internal Medicine Physician
  • Brooklyn, NY
National Provider Identifier
1962081422
Registry record updated Jan 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
331598-01 Issued in NY
Practice address
374 Stockholm St
Brooklyn, NY 11237-4006
Phone
(718) 963-7272
NPI assigned
Apr 2, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 29, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 331598-01 NY Primary
Internal Medicine Physician 207R00000X 83573 CT

Addresses

Primary practice location

374 Stockholm St
Brooklyn, NY 11237-4006

Mailing address

374 Stockholm St
Brooklyn, NY 11237-4006
Phone (718) 963-7272

Other practice location 1

80 Seymour St
Hartford, CT 06102-8000
Phone (860) 972-0549

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NY, CT2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20240905003933 NY Practitioner - HospitalistPractitioner - Internal Medicine 0244770121 Reassigns benefits to 1 organization
I20260207000634 CT Practitioner - Internal Medicine 0244770121 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Internal Medicine
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Wyckoff Professional Medical Services PCGroup PAC ID 6406748607, 154 clinicians
Hartford Healthcare Medical Group Specialists PLLCGroup PAC ID 3173866241, 1,555 clinicians

Practice addresses (Care Compare)

374 Stockholm St
Brooklyn, NY 11237-4006
Phone (718) 963-7266

80 Seymour St
Hartford, CT 06102-8000
Phone (860) 972-0549

Hospital & facility affiliations

  • Hartford Hospital Hospital, Hartford, CT, CCN 070025
  • Wyckoff Heights Medical Center Hospital, Brooklyn, NY, CCN 330221

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
331598-01NYMDLicensed Practical Nurse
83573CTMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Hartford Healthcare Medical Group Specialists, PLLC CurrentSince Mar 6, 2026 Accepting new patients
Wyckoff Professional Medical Services, PC Internal Medicine CurrentSince Aug 1, 2024 Accepting new patients
Hartford Healthcare Medical Group Specialists LLC CurrentSince Mar 6, 2026 Accepting new patients
Wyckoff Heights Medical Center Past Accepting new patients

Locations

1244 Storrs Rd
Storrs Mansfield, CT 06268
Phone (860) 724-2579

374 Stockholm St
Brooklyn, NY 11237
Phone (718) 963-6485

Networks

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

Organizations & group practices 4

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 3

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": "1617321600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769644800000",
    "number": "1962081422",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "374 STOCKHOLM ST",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112374006",
            "telephone_number": "718-963-7272"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "374 STOCKHOLM ST",
            "city": "BROOKLYN",
            "state": "NY",
            "postal_code": "112374006",
            "telephone_number": "718-963-7272"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "80 Seymour St",
            "address_purpose": "LOCATION",
            "city": "Hartford",
            "state": "CT",
            "postal_code": "061028000",
            "country_code": "US",
            "telephone_number": "860-972-0549",
            "fax_number": "860-545-5221",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRABOWSKI",
        "first_name": "JOANNA",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-04-02",
        "last_updated": "2026-01-29",
        "certification_date": "2026-01-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "331598-01",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CT",
            "license": "83573",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Brooklyn, NY

Sources for this page

Verify at the official NPI Registry.