Maria Teresa Vargas, MD
NPI 1821173568ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Tulsa, OK
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Warren Clinic Inc, practicing in Tulsa, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $851,372 for 2,282 claims, against $41,427 paid for services in 2024. Lilly USA, LLC was the largest of 14 companies reporting payments in 2025, $694.50 in all, mostly food and beverage. Lists Saint Francis Hospital Muskogee and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1821173568 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2006 |
| Last updated in NPPES | Jun 7, 2021 |
| Certified by provider | Jun 7, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 35205 | 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 - Endocrinology (FL); Practitioner - Endocrinology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 195 |
|---|---|
| Services billed | 557 across 9 procedure codes |
| Paid by Medicare | $41,427 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,282 · 4,539 30-day fills |
|---|---|
| Patients | 280 |
| Total drug cost | $851,372 |
| Generic share | 43% of claims |
Education and affiliations
| Graduation year | 1982 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Warren Clinic IncTulsa, OK · 883 clinicians
Hospital affiliations
- Saint Francis Hospital MuskogeeMuskogee, OK
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital Vinita, IncVinita, OK
- Saint Francis Hospital, IncTulsa, OK
Industry payments (Open Payments)
- 2025$694.50 · 30 payments from 14 companies
- 2024$741.34 · 36 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $173.50 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $89.04 | 6 |
| Abbott Laboratories | $82.27 | 4 |
| Mannkind Corporation | $67.45 | 2 |
| Chiesi USA, Inc. | $45.52 | 2 |
What the 2025 payments were for
- Food and Beverage$652.00 · 29 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 endocrinologists in Tulsa · All endocrinologists in Oklahoma