Kayla Mailloux, PA-C
NPI 1558994772ActiveIndividual· Physician Assistant· Westfield, MA
Physician Assistant (PA-C) with Women's Health Associates of Western Ma Inc., practicing in Westfield, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $158,427 for 1,581 claims, against $27,038 paid for services in 2024. Astellas Pharma US Inc was the largest of 10 companies reporting payments in 2025, $693.27 in all, mostly food and beverage. Lists Baystate Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1558994772 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Feb 17, 2020 |
| Last updated in NPPES | Sep 16, 2024 |
| Certified by provider | Sep 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA7381 | MA |
| Physician Assistant | 363A00000X | — | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 278 |
|---|---|
| Services billed | 874 across 36 procedure codes |
| Paid by Medicare | $27,038 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,581 · 3,338 30-day fills |
|---|---|
| Patients | 786 |
| Total drug cost | $158,427 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Women's Health Associates of Western Ma Inc.Westfield, MA · 3 clinicians
Hospital affiliations
- Baystate Medical CenterSpringfield, MA
- Baystate Noble HospitalWestfield, MA
Industry payments (Open Payments)
- 2025$693.27 · 26 payments from 10 companies
- 2024$408.94 · 13 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $250.33 | 7 |
| Sumitomo Pharma America, Inc. | $169.46 | 7 |
| Exact Sciences Corporation | $69.86 | 3 |
| Exeltis, USA Inc. | $44.32 | 2 |
| Sage Therapeutics, LLC | $42.22 | 2 |
What the 2025 payments were for
- Food and Beverage$594.27 · 25 payments
- Education$99.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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