Derick L. Ly, D.O., M.S.
NPI 1962744417ActiveIndividual· Psychiatry & Neurology, Psychiatry· Ontario, CA
Psychiatry & Neurology, Psychiatry (D.O., M.S.) with County of San Bernardino, practicing in Ontario, California. Their prescriptions cost Medicare Part D more than their services did: $175,457 for 1,018 claims, against $2,119 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 3 companies reporting payments in 2025, $100.08 in all, mostly food and beverage.
Overview
| NPI | 1962744417 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O., M.S. |
| Sole proprietor | No |
| NPI issued | Mar 22, 2013 |
| Last updated in NPPES | Mar 31, 2025 |
| Certified by provider | Mar 31, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 13326 | CA |
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 - Psychiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 28 |
|---|---|
| Services billed | 44 across 4 procedure codes |
| Paid by Medicare | $2,119 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,018 · 1,100 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $175,457 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- County of San BernardinoOntario, CA · 79 clinicians
Industry payments (Open Payments)
- 2025$100.08 · 4 payments from 3 companies
- 2024$194.92 · 6 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $41.64 | 2 |
| Teva Pharmaceuticals USA, Inc. | $29.99 | 1 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $28.45 | 1 |
What the 2025 payments were for
- Food and Beverage$100.08 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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