Mark Kenneth Longmuir, MD
NPI 1326278912ActiveIndividual· Family Medicine· Stanley, ND
Family Medicine (MD) in Stanley, North Dakota, trained at University of North Dakota School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $511,919 for 9,502 claims, against $3,458 paid for services in 2024. Novo Nordisk Inc was the largest of 4 companies reporting payments in 2025, $90.97 in all, mostly food and beverage.
Overview
| NPI | 1326278912 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 17, 2009 |
| Last updated in NPPES | Jun 4, 2024 |
| Certified by provider | Jun 4, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 12233 | ND |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Practice (ND) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 43 |
|---|---|
| Services billed | 81 across 17 procedure codes |
| Paid by Medicare | $3,458 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,502 · 12,694 30-day fills |
|---|---|
| Patients | 315 |
| Total drug cost | $511,919 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of North Dakota School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | General Practice |
Medical group
- Mountrail County Medical Center IncStanley, ND · 12 clinicians
Hospital affiliations
- Mountrail County Medical Center IncStanley, ND
- Tioga Medical CenterTioga, ND
- Trinity HospitalsMinot, ND
Other facilities
- Mountrail Bethel HomeNursing home · Stanley, ND
Industry payments (Open Payments)
- 2025$90.97 · 4 payments from 4 companies
- 2024$82.64 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $30.29 | 1 |
| E.R. Squibb & Sons, L.L.C. | $26.37 | 1 |
| Kerecis Limited | $18.66 | 1 |
| Exact Sciences Corporation | $15.65 | 1 |
What the 2025 payments were for
- Food and Beverage$90.97 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records