Donald J. Kosiak, MD
NPI 1629162706ActiveIndividual· Family Medicine· Bismarck, ND
Family Medicine (MD) in Bismarck, North Dakota, trained at University of North Dakota School of Medicine (class of 1979). Their prescriptions cost Medicare Part D more than their services did: $954,820 for 19,907 claims, against $138,629 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. reported $18.25 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1629162706 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 3, 2006 |
| Last updated in NPPES | Sep 11, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 4380 | 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 - Family Practice (ND) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 591 |
|---|---|
| Services billed | 1,980 across 9 procedure codes |
| Paid by Medicare | $138,629 |
Part D prescriptions in 2024
| Prescriptions (claims) | 19,907 · 20,110 30-day fills |
|---|---|
| Patients | 648 |
| Total drug cost | $954,820 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of North Dakota School of Medicine |
|---|---|
| Graduation year | 1979 |
| Medicare specialty | Family Practice |
Medical groups
- Sanford BismarckBismarck, ND · 556 clinicians
- Wishek Hospital-Clinic AssociationWishek, ND · 18 clinicians
Hospital affiliation
- Sanford Medical Center BismarckBismarck, ND
Other facilities
- Sanford Home Care - HospiceHospice · Mandan, ND
- Elm Crest ManorNursing home · New Salem, ND
- Good Samaritan Society Augusta Place A Prospera CoNursing home · Bismarck, ND
- Good Samaritan Society Miller Pointe A Prospera CoNursing home · Mandan, ND
- Sunset Drive - A Prospera CommunityNursing home · Mandan, ND
- Wishek Living CenterNursing home · Wishek, ND
Industry payments (Open Payments)
- 2025$18.25 · 1 payment from 1 company
- 2024$20.71 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $18.25 | 1 |
What the 2025 payments were for
- Food and Beverage$18.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 128 family medicine physicians in Bismarck · All family medicine physicians in North Dakota