Jennifer Lyn Messersmith, PA-C
NPI 1861736340ActiveIndividual· Physician Assistant· Grimes, IA
Physician Assistant (PA-C) with Dsm Sleep Specialists, practicing in Grimes, Iowa. Their prescriptions cost Medicare Part D more than their services did: $130,340 for 437 claims, against $5,435 paid for services in 2024. Jazz Pharmaceuticals Inc. reported $150.00 in payments in 2025, mostly consulting fees. Lists Grinnell Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1861736340 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Nov 21, 2012 |
| Last updated in NPPES | Mar 17, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 088067 | IA |
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 - Physician Assistant (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 59 |
|---|---|
| Services billed | 59 across 2 procedure codes |
| Paid by Medicare | $5,435 |
Part D prescriptions in 2024
| Prescriptions (claims) | 437 · 650 30-day fills |
|---|---|
| Patients | 96 |
| Total drug cost | $130,340 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Dsm Sleep SpecialistsClive, IA · 5 clinicians
Hospital affiliation
- Grinnell Regional Medical CenterGrinnell, IA
Industry payments (Open Payments)
- 2025$150.00 · 1 payment from 1 company
- 2024$28.12 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Jazz Pharmaceuticals Inc. | $150.00 | 1 |
What the 2025 payments were for
- Consulting Fee$150.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Grimes
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