Chelsea Nicole Thomas, DO
NPI 1336406685ActiveIndividual· Internal Medicine, Hematology & Oncology· Tulsa, OK
Internal Medicine, Hematology & Oncology (DO) in Tulsa, Oklahoma, trained at Oklahoma State University College of Osteopathic Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $1,910,777 for 1,442 claims, against $50,077 paid for services in 2024. Daiichi Sankyo Inc. was the largest of 20 companies reporting payments in 2025, $1,278 in all, mostly food and beverage.
Overview
| NPI | 1336406685 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Apr 11, 2012 |
| Last updated in NPPES | Feb 24, 2026 |
| Certified by provider | Feb 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 6342 | 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 - Hematology/Oncology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 252 |
|---|---|
| Services billed | 1,145 across 16 procedure codes |
| Paid by Medicare | $50,077 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,442 · 2,426 30-day fills |
|---|---|
| Patients | 252 |
| Total drug cost | $1,910,777 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Oklahoma State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Ou Health Partners IncOklahoma City, OK · 1,184 clinicians
- Warren Clinic IncTulsa, OK · 883 clinicians
- Saint Francis Hospital, Inc.Tulsa, OK · 61 clinicians
Hospital affiliations
- Hillcrest Hospital SouthTulsa, OK
- Hillcrest Medical CenterTulsa, OK
- O U Medical CenterOklahoma City, OK
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital, IncTulsa, OK
Industry payments (Open Payments)
- 2025$1,278 · 69 payments from 20 companies
- 2024$682.13 · 38 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $302.92 | 19 |
| Novartis Pharmaceuticals Corporation | $190.86 | 11 |
| Genzyme Corporation | $106.23 | 4 |
| Abbvie Inc. | $79.59 | 4 |
| Gilead Sciences, Inc. | $73.96 | 4 |
What the 2025 payments were for
- Food and Beverage$1,278 · 69 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 47 hematologist-oncologists in Tulsa · All hematologist-oncologists in Oklahoma