Active NPI
William Davis Singr, M.D.
- Neurology Physician
- Wellesley, MA
National Provider Identifier
1932163417
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Neurology Physician
- License
- 37938
- Practice address
- 42 Washington St
Suite 100
Wellesley, MA 02481-1803 - Phone
- (781) 416-1919
- Fax
- (781) 263-9017
- NPI assigned
- Apr 13, 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 |
|---|---|---|---|---|
| Neurology Physician | 2084N0400X | 37938 | MA | Primary |
Addresses
Primary practice location
42 Washington St
Suite 100
Wellesley, MA 02481-1803
Mailing address
42 Washington St
Suite 100
Wellesley, MA 02481-1803
Phone (781) 416-1919
Other identifiers 4
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3021260 | Medicaid | MA | |
| 037938 | Other | MA | TUFTS HEALTH PLAN |
| SI-K19118 | Other | MA | BLUE CROSS/BLUE SHIELD |
| 30001447 | Medicaid | NH |
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)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Center for Neurointegrative Sevices Inc | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
-
- Clinical Neuropsychologist
- Wellesley, MA
- NPI 1629291901
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1144886400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1932163417",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "42 WASHINGTON ST",
"address_2": "SUITE 100",
"city": "WELLESLEY",
"state": "MA",
"postal_code": "024811803",
"telephone_number": "781-416-1919",
"fax_number": "781-263-9017"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "42 WASHINGTON ST",
"address_2": "SUITE 100",
"city": "WELLESLEY",
"state": "MA",
"postal_code": "024811803",
"telephone_number": "781-416-1919",
"fax_number": "781-263-9017"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SINGR",
"first_name": "WILLIAM",
"middle_name": "DAVIS",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-04-13",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "2084N0400X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Neurology",
"state": "MA",
"license": "37938",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "3021260",
"state": "MA"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "TUFTS HEALTH PLAN",
"identifier": "037938",
"state": "MA"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BLUE CROSS/BLUE SHIELD",
"identifier": "SI-K19118",
"state": "MA"
},
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "30001447",
"state": "NH"
}
],
"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 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.