Margaret McMillan, CRNA
NPI 1154893691ActiveIndividual· Nurse Anesthetist, Certified Registered· Houston, TX
Nurse Anesthetist, Certified Registered (CRNA) with Emergenchealth PLLC and 1 other group, practicing in Houston, Texas. Medicare paid $17,552 for services to 137 patients in 2024. Merck Sharp & Dohme LLC was the largest of 3 companies reporting payments in 2025, $83.30 in all, mostly food and beverage. Lists Ut Health East Texas Tyler Regional Hospital as a hospital affiliation.
Overview
| NPI | 1154893691 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNA |
| Sole proprietor | Yes |
| NPI issued | Dec 21, 2018 |
| Last updated in NPPES | Oct 21, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | AP140342 | TX |
| Nurse Anesthetist, Certified Registered | 367500000X | 124451 | TX |
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) (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 137 |
|---|---|
| Services billed | 142 across 49 procedure codes |
| Paid by Medicare | $17,552 |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical groups
- Emergenchealth PLLCTexarkana, TX · 1,056 clinicians
- Northstar Anesthesia III PAFort Worth, TX · 373 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$83.30 · 4 payments from 3 companies
- 2024$51.75 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $48.15 | 2 |
| Vertex Pharmaceuticals Incorporated | $18.61 | 1 |
| Octapharma USA, Inc. | $16.54 | 1 |
What the 2025 payments were for
- Food and Beverage$83.30 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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