Diana Marie Chen, MD
NPI 1518919091ActiveIndividual· Internal Medicine· Tulsa, OK
Internal Medicine (MD) in Tulsa, Oklahoma, trained at University of Toledo College of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $995,263 for 7,656 claims, against $118,045 paid for services in 2024. Novo Nordisk Inc was the largest of 28 companies reporting payments in 2025, $3,146 in all, mostly food and beverage.
Overview
| NPI | 1518919091 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 16, 2006 |
| Last updated in NPPES | Feb 24, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 16942 | 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 | 139 |
|---|---|
| Services billed | 4,366 across 65 procedure codes |
| Paid by Medicare | $118,045 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,656 · 18,534 30-day fills |
|---|---|
| Patients | 286 |
| Total drug cost | $995,263 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Toledo College of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Ahs Oklahoma Physician Group LLCTulsa, OK · 313 clinicians
Hospital affiliations
- Hillcrest Hospital SouthTulsa, OK
- Hillcrest Medical CenterTulsa, OK
Industry payments (Open Payments)
- 2025$3,146 · 143 payments from 28 companies
- 2024$3,310 · 162 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $578.81 | 17 |
| Astrazeneca Pharmaceuticals LP | $576.57 | 30 |
| Abbvie Inc. | $250.65 | 19 |
| Lilly USA, LLC | $243.37 | 11 |
| Pfizer Inc. | $197.91 | 14 |
What the 2025 payments were for
- Food and Beverage$3,146 · 143 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Tulsa
- 1003203662
- 1013974757
- 1033111547
- 1033262712
- 1033648951
- 1043445620
- 1043898562
- 1053529891
- 1063562981
- 1073053468
- 1073545885
- 1073592945
All 373 internal medicine physicians in Tulsa · All internal medicine physicians in Oklahoma