Active NPI
Joanna Grabowski, MD
- Internal Medicine Physician
- Brooklyn, NY
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 331598-01
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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, CT
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Hospitalist
- Education
- Other, 2019
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
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
- Wyckoff Heights Medical Center
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 331598-01 | NY | MD | Licensed Practical Nurse |
| 83573 | CT | MD | Internal Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Hartford Healthcare Medical Group Specialists, PLLC | Current | Accepting new patients | |
| Wyckoff Professional Medical Services, PC | Internal Medicine | Current | Accepting new patients |
| Hartford Healthcare Medical Group Specialists LLC | Current | 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.
-
- Internal Medicine Physician
- Brooklyn, NY
- NPI 1659710796
-
- Surgery Physician
- Hartford, CT
- NPI 1023584216
-
- Customized Equipment (DME)
- Groton, CT
- NPI 1295367068
-
- General Acute Care Hospital
- Brooklyn, NY
- NPI 1700886322
Hospital & facility affiliations 3
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Brooklyn, NY
- NPI 1700886322
-
- General Acute Care Hospital
- Hartford, CT
- NPI 1770696643
-
- General Acute Care Hospital
- Hartford, CT
- NPI 1902834880
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.