Quick answers
- Does Gaston Oumarou accept Medicare assignment?
- Yes. Medicare's clinician data says Gaston Oumarou 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 Gaston Oumarou see?
- In 2024, CMS data shows 97 Original Medicare patients and 201 services for Gaston Oumarou. This counts Original Medicare only and measures volume, not quality.
- What is Gaston Oumarou's NPI number?
- 1841052420. 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 Gaston Oumarou, 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 | 97 |
|---|---|
| Services billed to Medicare | 201 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)92 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)18 services
- Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)12 services
- Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)12 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 pressure75%
- Arthritis75%
- High cholesterol74%
- Depression37%
- Anxiety35%
- Diabetes34%
Hospitals where Gaston Oumarou works
Medicare's Facility Affiliation Data lists Gaston Oumarou 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.
- Lakewood Health CenterBaudette, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241301
- Perham HealthPerham, MN · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 241373
- Sanford Bemidji Medical CenterBemidji, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240100
- Sanford MayvilleMayville, ND · Critical Access Hospital · Emergency services: listed by Medicare · CCN 351309
- Sanford Medical Center FargoFargo, ND · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 350011
Practice locations
Addresses where Gaston Oumarou is enrolled with Medicare (CMS data updated October 2, 2026).
- 1220 Sheyenne StWest Fargo, ND 58078 (701) 234‑4445
- 2301 25th St SFargo, ND 58103 (701) 234‑7400
- 5225 23rd Ave SFargo, ND 58104 (701) 417‑2575
Group practices
Medicare enrollment lists Gaston Oumarou as a member of this group (CMS data updated October 2, 2026).
- Sanford Medical Center Fargo1,225 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in West Fargo
Clinicians with the same Medicare primary specialty in West Fargo, ND — not a recommendation.
Other clinicians in Sanford Medical Center Fargo
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841052420 |
| 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