Mary Ellen Flanagan, AGNP
NPI 1033763297ActiveIndividual· Nurse Practitioner· Saint Louis, MO
Nurse Practitioner (AGNP) with Washington University, practicing in Saint Louis, Missouri. Mostly services rather than prescriptions: Medicare paid $146,648 for 170 patients in 2024, with only 29 Part D claims. Janssen Scientific Affairs, LLC was the largest of 8 companies reporting payments in 2025, $2,224 in all, mostly consulting fees.
Overview
| NPI | 1033763297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | AGNP |
| Sole proprietor | No |
| NPI issued | Jul 26, 2019 |
| Last updated in NPPES | Apr 17, 2025 |
| Certified by provider | Mar 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 2019036143 | MO |
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 - Nurse Practitioner (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 170 |
|---|---|
| Services billed | 5,986 across 59 procedure codes |
| Paid by Medicare | $146,648 |
Part D prescriptions in 2024
| Prescriptions (claims) | 29 · 29 30-day fills |
|---|---|
| Patients | 16 |
| Total drug cost | $217,251 |
| Generic share | 41% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Washington UniversitySaint Louis, MO · 3,029 clinicians
Industry payments (Open Payments)
- 2025$2,224 · 16 payments from 8 companies
- 2024$2,460 · 20 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Scientific Affairs, LLC | $1,242 | 3 |
| Daiichi Sankyo Inc. | $268.83 | 3 |
| Jazz Pharmaceuticals Inc. | $239.75 | 2 |
| Astrazeneca Pharmaceuticals LP | $142.50 | 3 |
| Genmab U.S., Inc. | $109.88 | 1 |
What the 2025 payments were for
- Consulting Fee$1,190 · 2 payments
- Food and Beverage$1,017 · 13 payments
- Education$17.30 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 448 nurse practitioners in Saint Louis · All nurse practitioners in Missouri