Active NPI
Robert Joseph Markelewicz Jr., M.D.
- Nuclear Imaging & Therapy Physician
- Wellesley, MA
National Provider Identifier
1033364336
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nuclear Imaging & Therapy Physician
- License
- 238256
- Practice address
- 51 Windemere Rd
Wellesley, MA 02481-4800 - Phone
- (401) 316-3166
- NPI assigned
- Dec 1, 2008
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 7
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Nuclear Imaging & Therapy Physician | 207UN0902X | 238256 | MA | Primary |
| Nuclear Medicine Physician | 207U00000X | 238256 | MA | |
| In Vivo & In Vitro Nuclear Medicine Physician | 207UN0903X | 238256 | MA | |
| Therapeutic Radiology Physician | 2085R0203X | 238256 | MA | |
| Nuclear Cardiology Physician | 207UN0901X | 238256 | MA | |
| Nuclear Radiology Physician | 2085N0904X | 238256 | MA | |
| Radiation Oncology Physician | 2085R0001X | 238256 | MA |
Addresses
Primary practice location
51 Windemere Rd
Wellesley, MA 02481-4800
Mailing address
51 Windemere Rd
Wellesley, MA 02481-4800
Phone (401) 316-3166
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| MD12997 | RI | MD | Nuclear Medicine Physician |
| 238256 | MA | MD | Advanced Practice Midwife |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1228089600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1780876800000",
"number": "1033364336",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "51 WINDEMERE RD",
"city": "WELLESLEY",
"state": "MA",
"postal_code": "024814800",
"telephone_number": "401-316-3166"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "51 WINDEMERE RD",
"city": "WELLESLEY",
"state": "MA",
"postal_code": "024814800",
"telephone_number": "401-316-3166"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MARKELEWICZ",
"first_name": "ROBERT",
"middle_name": "JOSEPH",
"name_prefix": "Dr.",
"name_suffix": "Jr.",
"credential": "M.D.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2008-12-01",
"last_updated": "2026-06-08",
"certification_date": "2026-06-08",
"status": "A"
},
"taxonomies": [
{
"code": "207UN0902X",
"taxonomy_group": "",
"desc": "Nuclear Medicine, Nuclear Imaging & Therapy",
"state": "MA",
"license": "238256",
"primary": true
},
{
"code": "207U00000X",
"taxonomy_group": "",
"desc": "Nuclear Medicine",
"state": "MA",
"license": "238256",
"primary": false
},
{
"code": "207UN0903X",
"taxonomy_group": "",
"desc": "Nuclear Medicine, In Vivo & In Vitro Nuclear Medicine",
"state": "MA",
"license": "238256",
"primary": false
},
{
"code": "2085R0203X",
"taxonomy_group": "",
"desc": "Radiology, Therapeutic Radiology",
"state": "MA",
"license": "238256",
"primary": false
},
{
"code": "207UN0901X",
"taxonomy_group": "",
"desc": "Nuclear Medicine, Nuclear Cardiology",
"state": "MA",
"license": "238256",
"primary": false
},
{
"code": "2085N0904X",
"taxonomy_group": "",
"desc": "Radiology, Nuclear Radiology",
"state": "MA",
"license": "238256",
"primary": false
},
{
"code": "2085R0001X",
"taxonomy_group": "",
"desc": "Radiology, Radiation Oncology",
"state": "MA",
"license": "238256",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Wellesley, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 8, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.