Mary Louise Greenwood, PA-C
NPI 1194291112ActiveIndividual· Physician Assistant· Tucson, AZ
Physician Assistant (PA-C) with Ironwood Dermatology PC, practicing in Tucson, Arizona. 1,089 Medicare patients in 2024, $181,613 paid; nearly all of their 776 Part D prescriptions were generic (97%). Genzyme Corporation was the largest of 12 companies reporting payments in 2025, $1,086 in all, mostly food and beverage.
Overview
| NPI | 1194291112 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Oct 17, 2018 |
| Last updated in NPPES | Feb 5, 2024 |
| Certified by provider | Feb 5, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 | 1,089 |
|---|---|
| Services billed | 7,931 across 40 procedure codes |
| Paid by Medicare | $181,613 |
Part D prescriptions in 2024
| Prescriptions (claims) | 776 · 861 30-day fills |
|---|---|
| Patients | 414 |
| Total drug cost | $116,466 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Ironwood Dermatology PCTucson, AZ · 10 clinicians
Industry payments (Open Payments)
- 2025$1,086 · 36 payments from 12 companies
- 2024$1,507 · 38 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $414.94 | 11 |
| Leo Pharma Inc. | $154.40 | 6 |
| Abbvie Inc. | $130.77 | 2 |
| Galderma Laboratories, L.P. | $78.73 | 4 |
| Lilly USA, LLC | $57.37 | 2 |
What the 2025 payments were for
- Food and Beverage$1,086 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 290 physician assistants in Tucson · All physician assistants in Arizona