John Michael Williams, M.D.
NPI 1811984719ActiveIndividual· Internal Medicine, Interventional Cardiology· Oklahoma City, OK
Internal Medicine, Interventional Cardiology (M.D.) in Oklahoma City, Oklahoma, trained at University of Oklahoma College of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $1,790,613 for 12,259 claims, against $401,801 paid for services in 2024. Abbott Laboratories was the largest of 11 companies reporting payments in 2025, $724.48 in all, mostly food and beverage.
Overview
| NPI | 1811984719 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 5, 2005 |
| Last updated in NPPES | Mar 6, 2024 |
| Certified by provider | Mar 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 18456 | OK |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 18456 | 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 - Interventional Cardiology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,230 |
|---|---|
| Services billed | 7,441 across 112 procedure codes |
| Paid by Medicare | $401,801 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,259 · 29,527 30-day fills |
|---|---|
| Patients | 1,867 |
| Total drug cost | $1,790,613 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology), Internal Medicine |
Medical groups
- Cardiovascular Health Clinic PLLCOklahoma City, OK · 23 clinicians
- Advanced Cardiovascular Solutions, LLCOklahoma City, OK · 7 clinicians
Hospital affiliations
- Grady Memorial HospitalChickasha, OK
- Memorial HealthLawton, OK
- Mercy Hospital Ardmore, IncArdmore, OK
- Mercy Hospital Oklahoma City, IncOklahoma City, OK
- Oklahoma Heart Hospital, LLCOklahoma City, OK
Industry payments (Open Payments)
- 2025$724.48 · 30 payments from 11 companies
- 2024$3,302 · 57 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $198.85 | 3 |
| Amgen Inc. | $174.34 | 11 |
| Novartis Pharmaceuticals Corporation | $64.84 | 3 |
| Merck Sharp & Dohme LLC | $55.63 | 3 |
| Medtronic, Inc. | $43.47 | 1 |
What the 2025 payments were for
- Food and Beverage$724.48 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 75 interventional cardiologists in Oklahoma City · All interventional cardiologists in Oklahoma