Active NPI
Mark S Volk, MD, DMD
- Otolaryngology Physician
- Boston, MA
National Provider Identifier
1124091806
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Otolaryngology Physician
- License
- 79400
- Practice address
- 333 Longwood Ave
Floor 3
Boston, MA 02115-5711 - Phone
- (617) 355-4556
- Fax
- (617) 730-0337
- NPI assigned
- Feb 11, 2006
- 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 |
|---|---|---|---|---|
| Otolaryngology Physician | 207Y00000X | 79400 | MA | Primary |
Addresses
Primary practice location
333 Longwood Ave
Floor 3
Boston, MA 02115-5711
Mailing address
26 Hammond Cir
Sudbury, MA 01776-2764
Phone (978) 443-1992
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3122913 | Medicaid | 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
- HHS exclusion list flag
- Flagged The directory lists this NPI on an HHS exclusion list.
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 79400 | MA | MD | Otolaryngology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1139616000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1124091806",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "26 HAMMOND CIR",
"city": "SUDBURY",
"state": "MA",
"postal_code": "017762764",
"telephone_number": "978-443-1992"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "333 LONGWOOD AVE",
"address_2": "FLOOR 3",
"city": "BOSTON",
"state": "MA",
"postal_code": "021155711",
"telephone_number": "617-355-4556",
"fax_number": "617-730-0337"
}
],
"practiceLocations": [],
"basic": {
"last_name": "VOLK",
"first_name": "MARK",
"middle_name": "S",
"name_prefix": "Dr.",
"credential": "MD, DMD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-02-11",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207Y00000X",
"taxonomy_group": "",
"desc": "Otolaryngology",
"state": "MA",
"license": "79400",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "3122913",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}
Other providers in Boston, 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.