Active NPI
Marsha Ina Chaskelson, PH.D.
- Psychologist
- Lexington, MA
National Provider Identifier
1639293681
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychologist
- License
- 4208
- Practice address
- 76 Bedford St
Suite 26
Lexington, MA 02420-4646 - Phone
- (781) 863-5599
- Fax
- (781) 863-2488
- NPI assigned
- Mar 16, 2007
- Sex
- Female
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 4
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Clinical Neuropsychologist | 103G00000X | 4208 | MA | |
| Psychologist | 103T00000X | 4208 | MA | Primary |
| Cognitive & Behavioral Psychologist | 103TB0200X | 4208 | MA | |
| Clinical Child & Adolescent Psychologist | 103TC2200X | 4208 | MA |
Addresses
Primary practice location
76 Bedford St
Suite 26
Lexington, MA 02420-4646
Mailing address
76 Bedford St
Suite 26
Lexington, MA 02420-4646
Phone (781) 863-5599
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| W10294 | Other | MA | BLUE CROSS BLUE SHIELD MA |
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 Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 4208 | MA | MD | Clinical Child & Adolescent Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1174003200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1639293681",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "76 BEDFORD ST",
"address_2": "SUITE 26",
"city": "LEXINGTON",
"state": "MA",
"postal_code": "024204646",
"telephone_number": "781-863-5599",
"fax_number": "781-863-2488"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "76 BEDFORD ST",
"address_2": "SUITE 26",
"city": "LEXINGTON",
"state": "MA",
"postal_code": "024204646",
"telephone_number": "781-863-5599",
"fax_number": "781-863-2488"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CHASKELSON",
"first_name": "MARSHA",
"middle_name": "INA",
"name_prefix": "Dr.",
"credential": "PH.D.",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2007-03-16",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "103G00000X",
"taxonomy_group": "",
"desc": "Clinical Neuropsychologist",
"state": "MA",
"license": "4208",
"primary": false
},
{
"code": "103T00000X",
"taxonomy_group": "",
"desc": "Psychologist",
"state": "MA",
"license": "4208",
"primary": true
},
{
"code": "103TB0200X",
"taxonomy_group": "",
"desc": "Psychologist, Cognitive & Behavioral",
"state": "MA",
"license": "4208",
"primary": false
},
{
"code": "103TC2200X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical Child & Adolescent",
"state": "MA",
"license": "4208",
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BLUE CROSS BLUE SHIELD MA",
"identifier": "W10294",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}Other providers in Lexington, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.