Ralph Lissaur, M.D.
NPI 1245287960ActiveIndividual· Psychiatry & Neurology, Psychiatry· Irvine, CA
Psychiatry & Neurology, Psychiatry (M.D.) in Irvine, California, trained at University of Arizona College of Medicine (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $241,845 for 1,786 claims, against $42,290 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 12 companies reporting payments in 2025, $1,006 in all, mostly food and beverage.
Overview
| NPI | 1245287960 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 28, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | A88975 | 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 - Psychiatry (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 44 |
|---|---|
| Services billed | 449 across 4 procedure codes |
| Paid by Medicare | $42,290 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,786 · 1,928 30-day fills |
|---|---|
| Patients | 91 |
| Total drug cost | $241,845 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | University of Arizona College of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- David Desai MD IncSan Bernardino, CA · 9 clinicians
Industry payments (Open Payments)
- 2025$1,006 · 52 payments from 12 companies
- 2024$1,003 · 45 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $252.97 | 14 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $156.95 | 10 |
| Neurocrine Biosciences, Inc. | $142.76 | 2 |
| Abbvie Inc. | $136.51 | 9 |
| E.R. Squibb & Sons, L.L.C. | $64.67 | 3 |
What the 2025 payments were for
- Food and Beverage$1,006 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 87 psychiatrists in Irvine · All psychiatrists in California