Active NPI
Donald John Thomson, MD
- Neurology Physician
- Walitham, MA
National Provider Identifier
1861445959
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Neurology Physician
- License
- 30777
- Practice address
- 20 Hope Ave
Ste 103
Walitham, MA 02453-2786 - Phone
- (781) 891-9170
- Fax
- (781) 899-3425
- NPI assigned
- May 18, 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 | 30777 | MA | Primary |
Addresses
Primary practice location
20 Hope Ave
Ste 103
Walitham, MA 02453-2786
Mailing address
20 Hope Ave
Ste 103
Walitham, MA 02453-2786
Phone (781) 891-9170
Other identifiers 3
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 11005 | Other | ME | HARVARD PILGRIM |
| 2020157 | Medicaid | MA | |
| 030777 | Other | MA | TUFTS |
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
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1147910400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1861445959",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "20 HOPE AVE",
"address_2": "STE 103",
"city": "WALITHAM",
"state": "MA",
"postal_code": "024532786",
"telephone_number": "781-891-9170",
"fax_number": "781-899-3425"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "20 HOPE AVE",
"address_2": "STE 103",
"city": "WALITHAM",
"state": "MA",
"postal_code": "024532786",
"telephone_number": "781-891-9170",
"fax_number": "781-899-3425"
}
],
"practiceLocations": [],
"basic": {
"last_name": "THOMSON",
"first_name": "DONALD",
"middle_name": "JOHN",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-05-18",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "2084N0400X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Neurology",
"state": "MA",
"license": "30777",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "HARVARD PILGRIM",
"identifier": "11005",
"state": "ME"
},
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "2020157",
"state": "MA"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "TUFTS",
"identifier": "030777",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}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.