Ahmad Basil Nasir, MD
NPI 1194345579ActiveIndividual· Hospitalist· Saint Louis, MO
Hospitalist (MD) with Usacs Observation Medicine Services of Oklahoma, LLC, practicing in Saint Louis, Missouri. Their prescriptions cost Medicare Part D more than their services did: $5,302 for 44 claims, against $3,234 paid for services in 2024. Novo Nordisk Inc was the largest of 2 companies reporting payments in 2025, $181.86 in all, mostly food and beverage. Lists Ascension St John Broken Arrow and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1194345579 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 25, 2020 |
| Last updated in NPPES | Sep 18, 2025 |
| Certified by provider | Sep 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 2024041686 | MO |
| Internal Medicine | 207R00000X | 35765 | 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 (MO); Practitioner - Internal Medicine (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 25 |
|---|---|
| Services billed | 28 across 3 procedure codes |
| Paid by Medicare | $3,234 |
Part D prescriptions in 2024
| Prescriptions (claims) | 44 · 77 30-day fills |
|---|---|
| Patients | 17 |
| Total drug cost | $5,302 |
| Generic share | 68% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Usacs Observation Medicine Services of Oklahoma, LLCTulsa, OK · 210 clinicians
Hospital affiliations
- Ascension St John Broken ArrowBroken Arrow, OK
- Ascension St John Jane PhillipsBartlesville, OK
- Ascension St John Medical CenterTulsa, OK
- Ascension St John SapulpaSapulpa, OK
- St John OwassoOwasso, OK
Industry payments (Open Payments)
- 2025$181.86 · 2 payments from 2 companies
- 2024$161.23 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $98.42 | 1 |
| Madrigal Pharmaceuticals | $83.44 | 1 |
What the 2025 payments were for
- Food and Beverage$181.86 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 431 hospitalists in Saint Louis · All hospitalists in Missouri