Doctor profile · Federal record
Dr. Kathryn Williams, MD
Family Medicine Physician (CMS: Family Practice) · Obstetrics Physician · Lewistown, MT
- NPI 1952857385
- Accepts Medicare
- 10 yrs in practice
- Licensed in 2 states
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
311 W Main St
Lewistown, MT 594572760
(406) 535-6545 - Additional location
-
401 Railroad St W
Missoula, MT 598024109
(406) 258-4789
fax (406) 258-4732 - Additional location
-
400 E 3Rd St
Duluth, MN 55805
(218) 786-8364
Credentials & registration
- NPI registered
- August 2016 — 10 yrs on file
- Profile last updated
- December 30, 2025
- Year of graduation
- 2016 — 10 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State licenses (2)
- Montana #MED-PHYS-LIC-78141 · Minnesota #65709
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1952857385. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
86
Distinct HCPCS
3
Medicare allowed
$7,794
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 46 | 20 | $78 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 21 | 18 | $128 | |
99238 |
Hospital discharge day management, 30 minutes or less | 19 | 14 | $80 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 28. This provider delivers 3.1× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
640
Patients
137
Total drug cost
$7,699
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 81 | 18 | $944 |
| Amlodipine Besylate | Generic | 77 | 23 | $268 |
| Atorvastatin Calcium | Generic | 58 | 18 | $651 |
| Losartan Potassium | Generic | 53 | 13 | $590 |
| Potassium Chloride | Generic | 53 | 16 | $1,296 |
| Lisinopril | Generic | 45 | 14 | $165 |
| Furosemide | Generic | 39 | 13 | $226 |
| Metoprolol Succinate | Generic | 37 | 0 | $299 |
| Gabapentin | Generic | 36 | 11 | $1,474 |
| Hydrochlorothiazide | Generic | 29 | 0 | $124 |
Frequently asked questions
What is Dr. Kathryn Williams's medical specialty?
Dr. Kathryn Williams practices Family Medicine Physician in Lewistown, MT.
Where does Dr. Kathryn Williams practice?
Dr. Kathryn Williams practices at 311 W Main St, Lewistown, MT 594572760. Office phone: 4065356545.
What is Dr. Kathryn Williams's NPI?
Dr. Kathryn Williams's National Provider Identifier (NPI) is 1952857385, issued by NPPES.
Does Dr. Kathryn Williams accept Medicare assignment?
Yes. Dr. Kathryn Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kathryn Williams commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Hospital discharge day management (HCPCS 99238). Source: CMS Medicare Physician & Other Practitioners file.