Marissa Ann Spencer, PA
NPI 1598314916ActiveIndividual· Physician Assistant· Mankato, MN
Physician Assistant (PA) with Mayo Clinic Health System-Southwest Minnesota Region and 1 other group, practicing in Mankato, Minnesota. 112 Medicare patients in 2024, $9,424 paid; nearly all of their 203 Part D prescriptions were generic (99%). Heron Therapeutics, Inc. was the largest of 2 companies reporting payments in 2025, $97.94 in all, mostly food and beverage. Lists Mayo Clinic Health System - Mankato and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1598314916 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Sep 9, 2019 |
| Last updated in NPPES | Mar 13, 2026 |
| Certified by provider | Mar 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | MN |
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 (MN); Practitioner - Physician Assistant (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 112 |
|---|---|
| Services billed | 184 across 28 procedure codes |
| Paid by Medicare | $9,424 |
Part D prescriptions in 2024
| Prescriptions (claims) | 203 · 206 30-day fills |
|---|---|
| Patients | 120 |
| Total drug cost | $3,020 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- Mayo Clinic Health System-Southwest Minnesota RegionMankato, MN · 661 clinicians
- Monument Health Rapid City Hospital IncRapid City, SD · 564 clinicians
Hospital affiliations
- Mayo Clinic Health System - MankatoMankato, MN
- Mayo Clinic Health System - WasecaWaseca, MN
- Mayo Clinic Health System New PragueNew Prague, MN
- Monument Health Rapid City HospitalRapid City, SD
Industry payments (Open Payments)
- 2025$97.94 · 2 payments from 2 companies
- 2024$161.35 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heron Therapeutics, Inc. | $83.92 | 1 |
| Stryker Corporation | $14.02 | 1 |
What the 2025 payments were for
- Food and Beverage$97.94 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 79 physician assistants in Mankato · All physician assistants in Minnesota