Active NPI
Bayard D Clarkson Jr., MD
- Psychiatry Physician
- Chestnut Hill, MA
National Provider Identifier
1669463956
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- 53344
- Practice address
- 47 Crafts Rd
Chestnut Hill, MA 02467-1823 - Phone
- (617) 730-8174
- Fax
- (617) 277-2844
- NPI assigned
- Nov 4, 2005
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | 53344 | MA | Primary |
| Child & Adolescent Psychiatry Physician | 2084P0804X | 53344 | MA |
Addresses
Primary practice location
47 Crafts Rd
Chestnut Hill, MA 02467-1823
Mailing address
PO Box 9142
Mass General Physician Organization
Charlestown, MA 02129-9142
Phone (617) 724-0287
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3045617 | Medicaid | MA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
- Opted out of Medicare
- Yes, effective Oct 14, 2019 through Oct 14, 2027
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": "1131062400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1669463956",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 9142",
"address_2": "MASS GENERAL PHYSICIAN ORGANIZATION",
"city": "CHARLESTOWN",
"state": "MA",
"postal_code": "021299142",
"telephone_number": "617-724-0287",
"fax_number": "617-726-2894"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "47 CRAFTS RD",
"city": "CHESTNUT HILL",
"state": "MA",
"postal_code": "024671823",
"telephone_number": "617-730-8174",
"fax_number": "617-277-2844"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CLARKSON",
"first_name": "BAYARD",
"middle_name": "D",
"name_prefix": "Dr.",
"name_suffix": "Jr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-11-04",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "MA",
"license": "53344",
"primary": true
},
{
"code": "2084P0804X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Child & Adolescent Psychiatry",
"state": "MA",
"license": "53344",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "3045617",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Chestnut Hill, 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.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.