Gary T. Dykstra, D.O.
NPI 1033172192ActiveIndividual· Internal Medicine, Cardiovascular Disease· Bartlesville, OK
Internal Medicine, Cardiovascular Disease (D.O.) in Bartlesville, Oklahoma, trained at Oklahoma State University College of Osteopathic Medicine (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $976,466 for 5,828 claims, against $97,601 paid for services in 2024. Abbott Laboratories was the largest of 9 companies reporting payments in 2025, $378.94 in all, mostly food and beverage.
Overview
| NPI | 1033172192 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Apr 10, 2006 |
| Last updated in NPPES | Sep 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 3077 | OK |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 0524469 | KS |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 05-24469 | KS |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (KS); Practitioner - Cardiovascular Disease (Cardiology) (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 748 |
|---|---|
| Services billed | 2,533 across 43 procedure codes |
| Paid by Medicare | $97,601 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,828 · 13,732 30-day fills |
|---|---|
| Patients | 726 |
| Total drug cost | $976,466 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Oklahoma State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- St. John Physicians, Inc.Tulsa, OK · 259 clinicians
Hospital affiliations
- Ascension St John Jane PhillipsBartlesville, OK
- Coffeyville Regional Medical Center, IncCoffeyville, KS
- Labette HealthParsons, KS
- Wilson Medical CenterNeodesha, KS
Industry payments (Open Payments)
- 2025$378.94 · 14 payments from 9 companies
- 2024$115.22 · 6 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $125.14 | 2 |
| Novartis Pharmaceuticals Corporation | $62.79 | 3 |
| Amgen Inc. | $35.31 | 2 |
| Abiomed | $33.34 | 1 |
| E.R. Squibb & Sons, L.L.C. | $32.12 | 2 |
What the 2025 payments were for
- Food and Beverage$378.94 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Cardiovascular Disease providers in Bartlesville
- 1922014240
- 1912299041
- 1396788022
- 1841253259
All Internal Medicine, Cardiovascular Disease providers in Oklahoma →