Kevin L. Oltmanns, M.D.
NPI 1316926728ActiveIndividual· Internal Medicine· Stillwater, OK
Internal Medicine (M.D.) in Stillwater, Oklahoma, trained at University of Oklahoma College of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $946,004 for 11,043 claims, against $224,660 paid for services in 2024. Lilly USA, LLC was the largest of 8 companies reporting payments in 2025, $225.02 in all, mostly food and beverage.
Overview
| NPI | 1316926728 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 13, 2006 |
| Last updated in NPPES | Sep 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 16583 | OK |
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 (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 535 |
|---|---|
| Services billed | 3,288 across 66 procedure codes |
| Paid by Medicare | $224,660 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,043 · 22,256 30-day fills |
|---|---|
| Patients | 607 |
| Total drug cost | $946,004 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stillwater Medical Center AuthorityStillwater, OK · 153 clinicians
Hospital affiliations
- O U Medical CenterOklahoma City, OK
- Stillwater Medical CenterStillwater, OK
Other facilities
- Companion Home Health, LLCHome health agency · Guthrie, OK
- Complete Home Health of Western OklahomaHome health agency · Tulsa, OK
- Elara Caring XviiiHome health agency · Stillwater, OK
- Genesis Home Health LLCHome health agency · Yale, OK
- Stillwater Medical at HomeHome health agency · Stillwater, OK
- Stillwater Medical at HomeHospice · Stillwater, OK
Industry payments (Open Payments)
- 2025$225.02 · 12 payments from 8 companies
- 2024$322.84 · 16 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $46.71 | 3 |
| Sumitomo Pharma America, Inc. | $44.06 | 2 |
| Exact Sciences Corporation | $32.34 | 2 |
| Astellas Pharma US Inc | $30.42 | 1 |
| Novo Nordisk Inc | $21.58 | 1 |
What the 2025 payments were for
- Food and Beverage$225.02 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 internal medicine physicians in Stillwater · All internal medicine physicians in Oklahoma