Quick answers
- Does Kelsey J. Sederquest accept Medicare assignment?
- Yes. Medicare's clinician data says Kelsey J. Sederquest 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 Kelsey J. Sederquest see?
- In 2024, CMS data shows 42 Original Medicare patients and 107 services for Kelsey J. Sederquest. This counts Original Medicare only and measures volume, not quality.
- What is Kelsey J. Sederquest's NPI number?
- 1053176057. 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 Kelsey J. Sederquest, 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 | 42 |
|---|---|
| Services billed to Medicare | 107 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)18 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)17 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 cholesterol57%
- High blood pressure52%
- Arthritis43%
- Ischemic heart disease26%
Hospitals where Kelsey J. Sederquest works
Medicare's Facility Affiliation Data lists Kelsey J. Sederquest 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.
- McKenzie County Healthcare Systems IncWatford City, ND · Critical Access Hospital · Emergency services: listed by Medicare · CCN 351302
Practice locations
Addresses where Kelsey J. Sederquest is enrolled with Medicare (CMS data updated October 2, 2026).
- 1542 16th St W, Suite 300Williston, ND 58801 (701) 577‑6337
- 3 4th St EWilliston, ND 58801 (701) 577‑6337
- 3 4th St E, Suite 2Williston, ND 58801 (701) 577‑6337
- 509 16th St NE, Suite 3Watford City, ND 58854 (701) 444‑7814
- 709 4th Ave NEWatford City, ND 58854 (701) 842‑3000
Group practices
Medicare enrollment lists Kelsey J. Sederquest as a member of this group (CMS data updated October 2, 2026).
- McKenzie County Healthcare Systems Inc66 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Williston
Clinicians with the same Medicare primary specialty in Williston, ND — not a recommendation.
Other clinicians in McKenzie County Healthcare Systems Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2024 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053176057 |
| 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