Jamie P. Larsen, PAC
NPI 1659410983ActiveIndividual· Physician Assistant, Medical· Mesa, AZ
Physician Assistant, Medical (PAC) with Genesis OB GYN PLLC, practicing in Mesa, Arizona. Their prescriptions cost Medicare Part D more than their services did: $190,252 for 2,620 claims, against $27,337 paid for services in 2024. Astellas Pharma US Inc was the largest of 8 companies reporting payments in 2025, $322.71 in all, mostly food and beverage.
Overview
| NPI | 1659410983 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PAC |
| Sole proprietor | No |
| NPI issued | Feb 5, 2007 |
| Last updated in NPPES | May 20, 2024 |
| Certified by provider | May 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 5177 | AZ |
| Obstetrics & Gynecology, Gynecology | 207VG0400X | 57597411206 | UT |
| Physician Assistant, Medical | 363AM0700X | 57597411206 | UT |
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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 291 |
|---|---|
| Services billed | 1,036 across 30 procedure codes |
| Paid by Medicare | $27,337 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,620 · 3,093 30-day fills |
|---|---|
| Patients | 389 |
| Total drug cost | $190,252 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Genesis OB GYN PLLCOro Valley, AZ · 110 clinicians
Industry payments (Open Payments)
- 2025$322.71 · 13 payments from 8 companies
- 2024$2,699 · 55 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $162.14 | 4 |
| Millicent US Inc | $39.13 | 2 |
| Exeltis, USA Inc. | $29.39 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $23.82 | 1 |
| Abbvie Inc. | $20.71 | 1 |
What the 2025 payments were for
- Food and Beverage$222.72 · 12 payments
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 100 physician assistants in Mesa · All physician assistants in Arizona