John Anthony Chua Diya, NP
NPI 1275095663ActiveIndividual· Nurse Practitioner, Family· Huntington Beach, CA
Nurse Practitioner, Family (NP) with Eagan Medical Group Inc, practicing in Huntington Beach, California. Their prescriptions cost Medicare Part D more than their services did: $38,860 for 758 claims, against $12,540 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 8 companies reporting payments in 2025, $612.34 in all, mostly food and beverage.
Overview
| NPI | 1275095663 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Apr 3, 2019 |
| Last updated in NPPES | May 6, 2020 |
| Certified by provider | May 6, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 95011440 | 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 - Nurse Practitioner (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 45 |
|---|---|
| Services billed | 182 across 2 procedure codes |
| Paid by Medicare | $12,540 |
Part D prescriptions in 2024
| Prescriptions (claims) | 758 · 1,119 30-day fills |
|---|---|
| Patients | 92 |
| Total drug cost | $38,860 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Eagan Medical Group IncLong Beach, CA · 8 clinicians
Industry payments (Open Payments)
- 2025$612.34 · 40 payments from 8 companies
- 2024$1,456 · 82 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $159.49 | 11 |
| Takeda Pharmaceuticals U.S.A., Inc. | $141.74 | 13 |
| Otsuka America Pharmaceutical, Inc. | $93.63 | 5 |
| Lundbeck LLC | $52.88 | 3 |
| Alkermes, Inc. | $44.99 | 2 |
What the 2025 payments were for
- Food and Beverage$612.34 · 40 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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