Active NPI
Joel L. Bass, MD
- Pediatrics Physician
- Newton, MA
National Provider Identifier
1427025444
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatrics Physician
- License
- 34924
- Practice address
- Newton-Wellesley Hospital
2014 Washington Street
Newton, MA 02462 - Phone
- (617) 243-6565
- Fax
- (617) 243-6981
- NPI assigned
- Mar 8, 2006
- Last updated
- Jul 13, 2026
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | 34924 | MA | Primary |
Addresses
Primary practice location
Newton-Wellesley Hospital
2014 Washington Street
Newton, MA 02462
Mailing address
9 Hemlock St
Needham, MA 02492-3501
Phone (781) 449-0184
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 |
|---|---|---|---|
| 34924 | MA | MD | Pediatrics Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1141776000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1427025444",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "9 HEMLOCK ST",
"city": "NEEDHAM",
"state": "MA",
"postal_code": "024923501",
"telephone_number": "781-449-0184"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "NEWTON-WELLESLEY HOSPITAL",
"address_2": "2014 WASHINGTON STREET",
"city": "NEWTON",
"state": "MA",
"postal_code": "02462",
"telephone_number": "617-243-6565",
"fax_number": "617-243-6981"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BASS",
"first_name": "JOEL",
"middle_name": "L.",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-03-08",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "MA",
"license": "34924",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Newton, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.