Mary B. Ernst, FNP
NPI 1487694659ActiveIndividual· Nurse Practitioner· Saint Peters, MO
Nurse Practitioner (FNP) with Physician Groups Lc, practicing in Saint Peters, Missouri. 116 Medicare patients in 2024, $8,913 paid; nearly all of their 331 Part D prescriptions were generic (92%). Actelion Pharmaceuticals US, Inc. was the largest of 2 companies reporting payments in 2025, $31.92 in all, mostly food and beverage.
Overview
| NPI | 1487694659 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | FNP |
| Sole proprietor | No |
| NPI issued | Jun 7, 2006 |
| Last updated in NPPES | May 3, 2022 |
| Certified by provider | May 3, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 2014010124 | MO |
| Nurse Practitioner, Acute Care | 363LA2100X | 2014010124 | MO |
| Nurse Practitioner, Acute Care | 363LA2100X | 073032 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 116 |
|---|---|
| Services billed | 262 across 22 procedure codes |
| Paid by Medicare | $8,913 |
Part D prescriptions in 2024
| Prescriptions (claims) | 331 · 342 30-day fills |
|---|---|
| Patients | 218 |
| Total drug cost | $4,126 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Physician Groups LcFarmington, MO · 521 clinicians
Industry payments (Open Payments)
- 2025$31.92 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Actelion Pharmaceuticals US, Inc. | $16.56 | 1 |
| Esperion Therapeutics, Inc. | $15.36 | 1 |
What the 2025 payments were for
- Food and Beverage$31.92 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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