Erin Elizabeth Esaki, PA-C
NPI 1023611100ActiveIndividual· Physician Assistant· Pleasant Hill, CA
Physician Assistant (PA-C) with John Muir Physician Network, practicing in Pleasant Hill, California. Their prescriptions cost Medicare Part D more than their services did: $8,100,604 for 1,672 claims, against $62,856 paid for services in 2024. Steris Corporation was the largest of 8 companies reporting payments in 2025, $423.17 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus as a hospital affiliation.
Overview
| NPI | 1023611100 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Nov 19, 2020 |
| Last updated in NPPES | Jul 15, 2022 |
| Certified by provider | Jul 15, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 359 |
|---|---|
| Services billed | 1,145 across 21 procedure codes |
| Paid by Medicare | $62,856 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,672 · 2,085 30-day fills |
|---|---|
| Patients | 539 |
| Total drug cost | $8,100,604 |
| Generic share | 68% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliation
- John Muir Medical Center - Concord CampusConcord, CA
Industry payments (Open Payments)
- 2025$423.17 · 12 payments from 8 companies
- 2024$936.58 · 35 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Steris Corporation | $158.48 | 1 |
| Glaxosmithkline, LLC. | $116.33 | 4 |
| E.R. Squibb & Sons, L.L.C. | $43.08 | 2 |
| Merck Sharp & Dohme LLC | $28.64 | 1 |
| Daiichi Sankyo Inc. | $20.73 | 1 |
What the 2025 payments were for
- Food and Beverage$423.17 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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