Rebecca N. Messerli
NPI 1073672499ActiveIndividual· Emergency Medicine· Merriam, KS
Emergency Medicine in Merriam, Kansas, trained at University of Kansas School of Med (Kc/Wich/Sal) (class of 2007). 381 Medicare patients in 2024, $47,367 paid; nearly all of their 236 Part D prescriptions were generic (95%). Astrazeneca Pharmaceuticals LP reported $24.51 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1073672499 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Dec 8, 2006 |
| Last updated in NPPES | Jun 30, 2021 |
| Certified by provider | Jun 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 2007013165 | 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 - Emergency Medicine (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 381 |
|---|---|
| Services billed | 435 across 18 procedure codes |
| Paid by Medicare | $47,367 |
Part D prescriptions in 2024
| Prescriptions (claims) | 236 · 240 30-day fills |
|---|---|
| Patients | 171 |
| Total drug cost | $2,075 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Kansas School of Med (Kc/Wich/Sal) |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Emergency Medicine |
Medical group
- ER Physicians South, P.A.Ottawa, KS · 33 clinicians
Hospital affiliations
- Adventhealth OttawaOttawa, KS
- Adventhealth Shawnee MissionShawnee Mission, KS
- Adventhealth South Overland Park, IncOverland Park, KS
Industry payments (Open Payments)
- 2025$24.51 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $24.51 | 1 |
What the 2025 payments were for
- Food and Beverage$24.51 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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