Elyssa Summer McCormack, PA-C
NPI 1710593397ActiveIndividual· Physician Assistant· Fullerton, CA
Physician Assistant (PA-C) in Fullerton, California, licensed in CA, with an NPI issued in September 2020. 42 Medicare patients in 2024, $4,550 paid; nearly all of their 109 Part D prescriptions were generic (99%).
Overview
| NPI | 1710593397 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Sep 19, 2020 |
| Last updated in NPPES | Jan 26, 2022 |
| Certified by provider | Jan 26, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA58537 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 42 |
|---|---|
| Services billed | 57 across 13 procedure codes |
| Paid by Medicare | $4,550 |
Part D prescriptions in 2024
| Prescriptions (claims) | 109 · 110 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $1,098 |
| Generic share | 99% of claims |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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