Robert Peter Aran, D.O.
NPI 1003357039ActiveIndividual· Internal Medicine, Gastroenterology· Tulsa, OK
Internal Medicine, Gastroenterology (D.O.) in Tulsa, Oklahoma, trained at Oklahoma State University College of Osteopathic Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $674,681 for 959 claims, against $113,264 paid for services in 2024. Abbvie Inc. was the largest of 18 companies reporting payments in 2025, $1,489 in all, mostly food and beverage.
Overview
| NPI | 1003357039 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Mar 9, 2017 |
| Last updated in NPPES | Sep 27, 2023 |
| Certified by provider | Sep 27, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 6354 | OK |
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 - Gastroenterology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 565 |
|---|---|
| Services billed | 1,269 across 50 procedure codes |
| Paid by Medicare | $113,264 |
Part D prescriptions in 2024
| Prescriptions (claims) | 959 · 1,454 30-day fills |
|---|---|
| Patients | 374 |
| Total drug cost | $674,681 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Oklahoma State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Gastroenterology |
Medical group
- Warren Clinic IncTulsa, OK · 883 clinicians
Hospital affiliations
- Saint Francis Hospital MuskogeeMuskogee, OK
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital, IncTulsa, OK
Industry payments (Open Payments)
- 2025$1,489 · 87 payments from 18 companies
- 2024$1,592 · 81 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $536.57 | 39 |
| Pfizer Inc. | $271.14 | 14 |
| Gilead Sciences, Inc. | $138.85 | 8 |
| Janssen Scientific Affairs, LLC | $107.88 | 1 |
| Madrigal Pharmaceuticals | $93.47 | 5 |
What the 2025 payments were for
- Food and Beverage$1,489 · 87 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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