Michael J. Louthan, M.D.
NPI 1013994276ActiveIndividual· Anesthesiology· Tucson, AZ
Anesthesiology (M.D.) in Tucson, Arizona, trained at Indiana University School of Medicine (class of 1992). Medicare paid $52,191 for services to 220 patients in 2024. Merck Sharp & Dohme LLC reported $27.76 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1013994276 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 29, 2005 |
| Last updated in NPPES | Dec 31, 2021 |
| Certified by provider | Dec 31, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 63364 | AZ |
| Anesthesiology | 207L00000X | 01041800 | IN |
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 - Anesthesiology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 220 |
|---|---|
| Services billed | 442 across 57 procedure codes |
| Paid by Medicare | $52,191 |
Education and affiliations
| Medical school | Indiana University School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Anesthesiology |
Medical group
- Ias Arizona PLLCTucson, AZ · 114 clinicians
Hospital affiliation
- Tucson Medical CenterTucson, AZ
Industry payments (Open Payments)
- 2025$27.76 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $27.76 | 1 |
What the 2025 payments were for
- Food and Beverage$27.76 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 329 anesthesiologists in Tucson · All anesthesiologists in Arizona