Keira Joy O'Reilly, PA
NPI 1891378873ActiveIndividual· Physician Assistant· Greenwich, CT
Physician Assistant (PA) with Physicians for Women's Health, LLC, practicing in Greenwich, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $5,919 for 133 claims, against $3,469 paid for services in 2024. Exeltis, USA Inc. was the largest of 8 companies reporting payments in 2025, $357.35 in all, mostly food and beverage. Lists Bridgeport Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1891378873 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Apr 28, 2021 |
| Last updated in NPPES | Sep 21, 2021 |
| Certified by provider | Sep 21, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 5376 | CT |
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 (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 119 across 11 procedure codes |
| Paid by Medicare | $3,469 |
Part D prescriptions in 2024
| Prescriptions (claims) | 133 · 222 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $5,919 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Physicians for Women's Health, LLCDanbury, CT · 318 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Griffin HospitalDerby, CT
Industry payments (Open Payments)
- 2025$357.35 · 14 payments from 8 companies
- 2024$678.31 · 21 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exeltis, USA Inc. | $124.56 | 2 |
| Millicent US Inc | $47.21 | 3 |
| Sage Therapeutics, LLC | $44.79 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $35.76 | 2 |
| Sumitomo Pharma America, Inc. | $34.62 | 2 |
What the 2025 payments were for
- Food and Beverage$357.35 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 36 physician assistants in Greenwich · All physician assistants in Connecticut