John D. Kolstoe, MD
NPI 1124043229ActiveIndividual· Internal Medicine, Rheumatology· Bemidji, MN
Internal Medicine, Rheumatology (MD) in Bemidji, Minnesota, trained at University of North Dakota School of Medicine (class of 1980). Their prescriptions cost Medicare Part D more than their services did: $429,375 for 3,034 claims, against $243,228 paid for services in 2024. Janssen Biotech, Inc. was the largest of 17 companies reporting payments in 2025, $1,500 in all, mostly food and beverage.
Overview
| NPI | 1124043229 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 12, 2006 |
| Last updated in NPPES | Jun 22, 2021 |
| Certified by provider | Jun 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 29139 | MN |
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 - Internal Medicine (MI); Practitioner - Rheumatology (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 260 |
|---|---|
| Services billed | 15,173 across 46 procedure codes |
| Paid by Medicare | $243,228 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,034 · 5,001 30-day fills |
|---|---|
| Patients | 295 |
| Total drug cost | $429,375 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of North Dakota School of Medicine |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Rheumatology |
Medical group
- Joshua P June DOLansing, MI · 5 clinicians
Hospital affiliation
- University of Michigan Health - Sparrow EatonCharlotte, MI
Industry payments (Open Payments)
- 2025$1,500 · 108 payments from 17 companies
- 2024$1,971 · 145 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $291.03 | 42 |
| Novartis Pharmaceuticals Corporation | $282.78 | 13 |
| Amgen Inc. | $243.96 | 16 |
| Astrazeneca Pharmaceuticals LP | $225.15 | 16 |
| E.R. Squibb & Sons, L.L.C. | $106.01 | 4 |
What the 2025 payments were for
- Food and Beverage$1,500 · 108 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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