Active NPI
Nathaniel Adam Long, MD
- Hospitalist Physician
- Portland, ME
National Provider Identifier
1306585518
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Hospitalist Physician
- License
- MD29225
- Practice address
- 22 Bramhall St
Portland, ME 04102-3134 - Phone
- (207) 662-4618
- Fax
- (207) 662-6254
- NPI assigned
- Jun 4, 2022
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | MD29225 | ME | |
| Hospitalist Physician | 208M00000X | MD29225 | ME | Primary |
| Internal Medicine Physician | 207R00000X | 293751 | MA |
Addresses
Primary practice location
22 Bramhall St
Portland, ME 04102-3134
Mailing address
22 Bramhall St
Portland, ME 04102-3134
Phone (207) 662-4618
Other practice location 1
330 Brookline Ave
Boston, MA 02215-5491
Phone (617) 667-7000
Other practice location 2
1 Medical Center Dr
Biddeford, ME 04005-9422
Phone (207) 283-7937
Other practice location 3
25 June St
Sanford, ME 04073-2621
Phone (207) 324-4310
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in ME
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Internal Medicine
- Education
- Pennsylvania State University College of Medicine, 2022
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1 Medical Ctr Dr
Biddeford, ME 04005-9422
Phone (207) 282-4270
22 Bramhall St
Portland, ME 04102-3134
Phone (207) 885-9905
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Mainehealth | Current | Accepting new patients | |
| Mainehealth | Internal Medicine | Current | Accepting new patients |
| Mainehealth | Current | Accepting new patients | |
| Mainehealth | Past | Accepting new patients |
Locations
1 Medical Dr
Biddeford, ME 04005
Phone (207) 283-7000
22 Bramhall St
Portland, ME 04102
Phone (207) 662-2179
25 June St
Sanford, ME 04073
Phone (207) 324-4310
Organizations & group practices 4
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Psychiatric Hospital
- Westbrook, ME
- NPI 1790265502
-
- Community/Retail Pharmacy
- Portland, ME
- NPI 1013868181
-
- General Acute Care Hospital
- Portland, ME
- NPI 1760436216
Hospital & facility affiliations 36
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Scarborough, ME
- NPI 1053647024
-
- General Acute Care Hospital
- Portland, ME
- NPI 1346267879
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1654300800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1751846400000",
"number": "1306585518",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "22 BRAMHALL ST",
"city": "PORTLAND",
"state": "ME",
"postal_code": "041023134",
"telephone_number": "207-662-4618",
"fax_number": "207-662-6254"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "22 BRAMHALL ST",
"city": "PORTLAND",
"state": "ME",
"postal_code": "041023134",
"telephone_number": "207-662-4618",
"fax_number": "207-662-6254"
}
],
"practiceLocations": [
{
"address_1": "330 Brookline Ave",
"address_purpose": "LOCATION",
"city": "Boston",
"state": "MA",
"postal_code": "022155491",
"country_code": "US",
"telephone_number": "617-667-7000",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "1 Medical Center Dr",
"address_purpose": "LOCATION",
"city": "Biddeford",
"state": "ME",
"postal_code": "040059422",
"country_code": "US",
"telephone_number": "207-283-7937",
"fax_number": "207-283-7018",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "25 June St",
"address_purpose": "LOCATION",
"city": "Sanford",
"state": "ME",
"postal_code": "040732621",
"country_code": "US",
"telephone_number": "207-324-4310",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "LONG",
"first_name": "NATHANIEL",
"middle_name": "ADAM",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-06-04",
"last_updated": "2025-07-07",
"certification_date": "2025-07-07",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "ME",
"license": "MD29225",
"primary": false
},
{
"code": "208M00000X",
"taxonomy_group": "",
"desc": "Hospitalist",
"state": "ME",
"license": "MD29225",
"primary": true
},
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "MA",
"license": "293751",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Portland, ME
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 7, 2025; 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.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.