Allison Rebecca Shenker, MSN, APRN, FNP-BC
NPI 1235655465ActiveIndividual· Nurse Practitioner, Family· Chesterfield, MO
Nurse Practitioner, Family (MSN, APRN, FNP-BC) with American Multispecialty Group Inc, practicing in Chesterfield, Missouri. Their prescriptions cost Medicare Part D more than their services did: $63,427 for 1,303 claims, against $19,772 paid for services in 2024. Novo Nordisk Inc was the largest of 9 companies reporting payments in 2025, $220.27 in all, mostly food and beverage. Lists Mercy Hospital St Louis and 1 other hospital as hospital affiliations.
Overview
| NPI | 1235655465 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MSN, APRN, FNP-BC |
| Sole proprietor | No |
| NPI issued | Aug 18, 2017 |
| Last updated in NPPES | May 17, 2023 |
| Certified by provider | May 17, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 2017023156 | 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 | 145 |
|---|---|
| Services billed | 719 across 60 procedure codes |
| Paid by Medicare | $19,772 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,303 · 2,704 30-day fills |
|---|---|
| Patients | 363 |
| Total drug cost | $63,427 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- American Multispecialty Group IncSaint Charles, MO · 116 clinicians
Hospital affiliations
- Mercy Hospital St LouisSaint Louis, MO
- St Lukes HospitalChesterfield, MO
Other facilities
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$220.27 · 12 payments from 9 companies
- 2024$402.42 · 20 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $39.77 | 2 |
| Pfizer Inc. | $36.92 | 2 |
| Abbvie Inc. | $31.76 | 2 |
| Lilly USA, LLC | $23.80 | 1 |
| Phathom Pharmaceuticals, Inc. | $22.44 | 1 |
What the 2025 payments were for
- Food and Beverage$220.27 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 116 family nurse practitioners in Chesterfield · All family nurse practitioners in Missouri