Active NPI
Kathryn Lee Williams, MD
- Family Medicine Physician
- Lewistown, MT
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- License
- MED-PHYS-LIC-78141
- Practice address
- 311 W Main St
Lewistown, MT 59457-2760 - Phone
- (406) 535-6545
- NPI assigned
- Aug 26, 2016
- 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 |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | MED-PHYS-LIC-78141 | MT | Primary |
| Obstetrics Physician | 207VX0000X | 65709 | MN |
Addresses
Primary practice location
311 W Main St
Lewistown, MT 59457-2760
Mailing address
311 W Main St
Lewistown, MT 59457-2760
Phone (406) 535-6545
Other practice location 1
401 Railroad St W
Missoula, MT 59802-4109
Phone (406) 258-4789
Other practice location 2
400 E 3rd St
Duluth, MN 55805
Phone (218) 786-8364
Other practice location 3
401 Railroad St W
Missoula, MT 59802-4109
Phone (406) 258-4789
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MT
- 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
- Family Practice
- Education
- Columbia University College of Physicians and Surgeons, 2016
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
10 4TH St W
Hardin, MT 59034-1804
Phone (406) 665-4103
311 W Main St
Lewistown, MT 59457-2770
Phone (406) 535-6545
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
Locations
112 St. Labre Campus Dr
Ashland, MT 59003
Phone (406) 784-2346
410 Triple Crown St
Rm A108
Belgrade, MT 59714
Phone (406) 388-3311
19 E Main St
Belgrade, MT 59714
Phone (406) 222-1111
1695 Tschache Ln
Bozeman, MT 59715
Phone (406) 585-1360
300 College Dr
Glendive, MT 59330
Phone (406) 377-9410
1515 W Bell St
Ste 15
Glendive, MT 59330
Phone (406) 345-5336
1223 N Center Ave
Hardin, MT 59034
Phone (406) 665-4103
16 N Miles Ave
Ste 101
Hardin, MT 59034
Phone (406) 237-8270
10 4th St W
Ste B
Hardin, MT 59034
Phone (406) 237-5845
721 N Miles Ave
Hardin, MT 59034
Phone (406) 665-4103
311 W Main St
Lewistown, MT 59457
Phone (406) 535-6545
406 1st Ave S
Lewistown, MT 59457
Phone (406) 535-6545
112 W Lewis St
Livingston, MT 59047
Phone (406) 222-1111
601 Main St
Miles City, MT 59301
Phone (406) 874-8700
305 S 4th St
Miles City, MT 59301
Phone (406) 234-4724
Interoperability endpoints
- kwilliams673574@wm.providencedirect.org
- kathryn.williams.1@16708.direct.athenahealth.com
Organizations & group practices 20
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.
-
- Federally Qualified Health Center (FQHC)
- Hardin, MT
- NPI 1255617130
-
- Federally Qualified Health Center (FQHC)
- Harlem, MT
- NPI 1619160504
-
- Federally Qualified Health Center (FQHC)
- Bozeman, MT
- NPI 1356106009
-
- Federally Qualified Health Center (FQHC)
- Miles City, MT
- NPI 1285611129
-
- Federally Qualified Health Center (FQHC)
- Chinook, MT
- NPI 1619970795
-
- Federally Qualified Health Center (FQHC)
- Lewistown, MT
- NPI 1942450432
-
- Federally Qualified Health Center (FQHC)
- Hardin, MT
- NPI 1194571018
-
- Federally Qualified Health Center (FQHC)
- Hardin, MT
- NPI 1336821115
-
- Federally Qualified Health Center (FQHC)
- Belgrade, MT
- NPI 1366049967
-
- Federally Qualified Health Center (FQHC)
- Bozeman, MT
- NPI 1376787770
-
- Federally Qualified Health Center (FQHC)
- Belgrade, MT
- NPI 1447494000
-
- Federally Qualified Health Center (FQHC)
- Hardin, MT
- NPI 1457014003
Hospital & facility affiliations 13
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Great Falls, MT
- NPI 1881650737
-
- General Acute Care Hospital
- Bozeman, MT
- NPI 1215660840
-
- General Acute Care Hospital
- Billings, MT
- NPI 1265478291
-
- Critical Access Hospital
- Lewistown, MT
- NPI 1790798387
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1472169600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1767052800000",
"number": "1952857385",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "311 W MAIN ST",
"city": "LEWISTOWN",
"state": "MT",
"postal_code": "594572760",
"telephone_number": "406-535-6545"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "311 W MAIN ST",
"city": "LEWISTOWN",
"state": "MT",
"postal_code": "594572760",
"telephone_number": "406-535-6545"
}
],
"practiceLocations": [
{
"address_1": "401 Railroad St W",
"address_purpose": "LOCATION",
"city": "Missoula",
"state": "MT",
"postal_code": "598024109",
"country_code": "US",
"telephone_number": "406-258-4789",
"fax_number": "406-258-4732",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "400 E 3rd St",
"address_purpose": "LOCATION",
"city": "Duluth",
"state": "MN",
"postal_code": "55805",
"country_code": "US",
"telephone_number": "218-786-8364",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "401 Railroad St W",
"address_purpose": "LOCATION",
"city": "Missoula",
"state": "MT",
"postal_code": "598024109",
"country_code": "US",
"telephone_number": "406-258-4789",
"fax_number": "406-258-4732",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "WILLIAMS",
"first_name": "KATHRYN",
"middle_name": "LEE",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2016-08-26",
"last_updated": "2025-12-30",
"certification_date": "2025-12-30",
"status": "A"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "MT",
"license": "MED-PHYS-LIC-78141",
"primary": true
},
{
"code": "207VX0000X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology, Obstetrics",
"state": "MN",
"license": "65709",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Lewistown, MT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 30, 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.