Active NPI
Katherine Elizabeth Stewart, MD
- Emergency Medicine Physician
- Portland, ME
National Provider Identifier
1992321954
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Emergency Medicine Physician
- License
- MD28948
- Practice address
- 22 Bramhall St
Portland, ME 04102-3134 - Phone
- (207) 662-2381
- NPI assigned
- Jun 24, 2020
- Sex
- Female
- 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 |
|---|---|---|---|---|
| Emergency Medicine Physician | 207P00000X | MD19935 | RI | |
| Emergency Medicine Physician | 207P00000X | MD28948 | ME | Primary |
Addresses
Primary practice location
22 Bramhall St
Portland, ME 04102-3134
Mailing address
22 Bramhall St
Portland, ME 04102-3134
Phone (207) 662-2381
Other practice location 1
593 Eddy St
Providence, RI 02903-4923
Phone (401) 444-6489
Other practice location 2
335 Brighton Ave
Portland, ME 04102-2363
Phone (207) 662-0111
Other practice location 3
1 Medical Center Dr
Biddeford, ME 04005-9422
Phone (207) 294-5000
Other practice location 4
25 June St
Sanford, ME 04073-2621
Phone (207) 490-7450
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in RI, ME
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Emergency Medicine
- Education
- University of Rochester School of Medicine and Dentistry, 2020
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
22 Bramhall St
Portland, ME 04102-3134
Phone (207) 885-9905
335 Brighton Ave
Portland, ME 04102-2363
Phone (207) 662-8000
Hospital & facility affiliations
- Mainehealth Maine Medical Center
Merit-based Incentive Payment System (MIPS)
- Final score
- 96.45 of 100
- Quality
- 85.46
- Promoting interoperability
- 100
- Improvement activities
- 40
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Lifespan Corporation | Current | Accepting new patients | |
| Mainehealth | Current | Accepting new patients | |
| Mainehealth | Current | Accepting new patients | |
| Mainehealth | Current | Accepting new patients |
Locations
1 Medical Dr
Biddeford, ME 04005
Phone (207) 283-7000
335 Brighton Ave
Portland, ME 04102
Phone (207) 662-8000
22 Bramhall St
Portland, ME 04102
Phone (207) 662-2179
25 June St
Sanford, ME 04073
Phone (207) 324-4310
Interoperability endpoints
- kstewart192492@brownhealth.medalliesdirect.net
- kstewart913337@direct.mmc.mainehealth.org
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
-
- Pediatrics Physician
- Falmouth, ME
- NPI 1629382601
-
- Children's Rehabilitation Hospital
- Providence, RI
- NPI 1790221232
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": "1592956800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1746057600000",
"number": "1992321954",
"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": "207-662-2381"
},
{
"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": "207-662-2381"
}
],
"practiceLocations": [
{
"address_1": "593 Eddy St",
"address_purpose": "LOCATION",
"city": "Providence",
"state": "RI",
"postal_code": "029034923",
"country_code": "US",
"telephone_number": "401-444-6489",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "335 Brighton Ave",
"address_purpose": "LOCATION",
"city": "Portland",
"state": "ME",
"postal_code": "041022363",
"country_code": "US",
"telephone_number": "207-662-0111",
"fax_number": "207-662-8133",
"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": "207-294-5000",
"fax_number": "207-294-5227",
"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": "207-490-7450",
"fax_number": "207-490-7452",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "STEWART",
"first_name": "KATHERINE",
"middle_name": "ELIZABETH",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2020-06-24",
"last_updated": "2025-05-01",
"certification_date": "2025-05-01",
"status": "A"
},
"taxonomies": [
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "RI",
"license": "MD19935",
"primary": false
},
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "ME",
"license": "MD28948",
"primary": true
}
],
"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 May 1, 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.