Michael B. Karren, CRNA
NPI 1730419730ActiveIndividual· Nurse Anesthetist, Certified Registered· Rexburg, ID
Nurse Anesthetist, Certified Registered (CRNA) with Madison Anesthesia Services PA, practicing in Rexburg, Idaho. Medicare paid $14,916 for services to 115 patients in 2024. Pacira Pharmaceuticals Incorporated was the largest of 3 companies reporting payments in 2025, $235.02 in all, mostly food and beverage. Lists Madison Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1730419730 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNA |
| Sole proprietor | No |
| NPI issued | Jan 13, 2010 |
| Last updated in NPPES | Feb 28, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | 34323 | ID |
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 - Certified Registered Nurse Anesthetist (CRNA) (ID) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 115 |
|---|---|
| Services billed | 129 across 35 procedure codes |
| Paid by Medicare | $14,916 |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical group
- Madison Anesthesia Services PAReburg, ID · 10 clinicians
Hospital affiliations
- Madison Memorial HospitalRexburg, ID
- Mountain View HospitalIdaho Falls, ID
Industry payments (Open Payments)
- 2025$235.02 · 7 payments from 3 companies
- 2024$51.92 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pacira Pharmaceuticals Incorporated | $150.20 | 4 |
| Merck Sharp & Dohme LLC | $50.17 | 2 |
| Conmed Corporation | $34.65 | 1 |
What the 2025 payments were for
- Food and Beverage$203.91 · 5 payments
- Education$31.11 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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