Active NPI
Ryan Chen
- Dermatology Physician
- Cambridge, MA
National Provider Identifier
1386586220
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Dermatology Physician
- License
- 3020509
- Practice address
- 330 Mount Auburn St
Cambridge, MA 02138-5597 - Phone
- (617) 492-3500
- NPI assigned
- Apr 8, 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 |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 3020509 | MA | |
| Dermatology Physician | 207N00000X | 3020509 | MA | Primary |
Addresses
Primary practice location
330 Mount Auburn St
Cambridge, MA 02138-5597
Mailing address
26 Graniteville Rd
Westford, MA 01886-2504
Phone (978) 483-1982
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
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 3020509 | MA | MD | Internal Medicine Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1775606400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1775606400000",
"number": "1386586220",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "26 GRANITEVILLE RD",
"city": "WESTFORD",
"state": "MA",
"postal_code": "018862504",
"telephone_number": "978-483-1982"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "330 MOUNT AUBURN ST",
"city": "CAMBRIDGE",
"state": "MA",
"postal_code": "021385597",
"telephone_number": "617-492-3500"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CHEN",
"first_name": "RYAN",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-04-08",
"last_updated": "2026-04-08",
"certification_date": "2026-04-08",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "MA",
"license": "3020509",
"primary": false
},
{
"code": "207N00000X",
"taxonomy_group": "",
"desc": "Dermatology",
"state": "MA",
"license": "3020509",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Cambridge, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 8, 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.