Quick answers
- Does Kathryn L. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn L. Williams accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Kathryn L. Williams see?
- In 2024, CMS data shows 55 Original Medicare patients and 142 services for Kathryn L. Williams. This counts Original Medicare only and measures volume, not quality.
- What is Kathryn L. Williams's NPI number?
- 1952857385. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Kathryn L. Williams, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 55 |
|---|---|
| Services billed to Medicare | 142 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)39 services
- Hospital discharge day management, 30 minutes or less (99238)24 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)13 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure65%
- Arthritis42%
- High cholesterol40%
- Diabetes29%
- Chronic kidney disease29%
- COPD27%
Hospitals where Kathryn L. Williams works
Medicare's Facility Affiliation Data lists Kathryn L. Williams at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Benefis Hospitals IncGreat Falls, MT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 270012
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 270004
- Central Montana Medical CenterLewistown, MT · Critical Access Hospital · Emergency services: listed by Medicare · CCN 271345
Practice locations
Addresses where Kathryn L. Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 10 4th St WHardin, MT 59034 (406) 665‑4103
- 10 4th St W, Suite BHardin, MT 59034 (406) 665‑4103
- 311 W Main StLewistown, MT 59457 (406) 535‑6545
Group practices
Medicare enrollment lists Kathryn L. Williams as a member of this group (CMS data updated October 2, 2026).
- Bighorn Valley Health Center Incorporated79 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Hardin
Clinicians with the same Medicare primary specialty in Hardin, MT — not a recommendation.
Other clinicians in Bighorn Valley Health Center Incorporated
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952857385 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians