Calvin Ryan Williams
NPI 1932664414ActiveIndividual· Obstetrics & Gynecology· Oak Ridge, TN
Obstetrics & Gynecology in Oak Ridge, Tennessee, trained at Lincoln Memorial University Medical Department (class of 2019). 39 Medicare patients in 2024, $6,051 paid; nearly all of their 51 Part D prescriptions were generic (98%). Exeltis, USA Inc. was the largest of 9 companies reporting payments in 2025, $287.03 in all, mostly food and beverage.
Overview
| NPI | 1932664414 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Feb 8, 2019 |
| Last updated in NPPES | Aug 9, 2023 |
| Certified by provider | Aug 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 0000005206 | TN |
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 - Obstetrics/Gynecology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 94 across 20 procedure codes |
| Paid by Medicare | $6,051 |
Part D prescriptions in 2024
| Prescriptions (claims) | 51 · 88 30-day fills |
|---|---|
| Patients | 26 |
| Total drug cost | $1,710 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Lincoln Memorial University Medical Department |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Obstetric and Gyncologic Assocs of Oak RidgeOak Ridge, TN · 6 clinicians
Industry payments (Open Payments)
- 2025$287.03 · 17 payments from 9 companies
- 2024$221.67 · 12 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exeltis, USA Inc. | $50.03 | 3 |
| Astellas Pharma US Inc | $43.24 | 3 |
| Hologic Sales and Service, LLC | $39.82 | 2 |
| Sage Therapeutics, LLC | $38.53 | 2 |
| Sumitomo Pharma America, Inc. | $35.69 | 2 |
What the 2025 payments were for
- Food and Beverage$287.03 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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