Lydia Bai-Tsin Ann
NPI 1316433303ActiveIndividual· Psychiatry & Neurology, Psychiatry· Orange, CA
Psychiatry & Neurology, Psychiatry in Orange, California, trained at University of California, Geffen School of Medicine (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $45,839 for 240 claims, against $18,666 paid for services in 2024. Axsome Therapeutics, Inc. was the largest of 2 companies reporting payments in 2025, $57.59 in all, mostly food and beverage.
Overview
| NPI | 1316433303 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Jul 3, 2018 |
| Last updated in NPPES | Jul 16, 2024 |
| Certified by provider | Jul 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | A164652 | CA |
| Psychiatry & Neurology, Geriatric Psychiatry | 2084P0805X | A164652 | CA |
| General Practice | 208D00000X | A164652 | 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 | 97 |
|---|---|
| Services billed | 177 across 11 procedure codes |
| Paid by Medicare | $18,666 |
Part D prescriptions in 2024
| Prescriptions (claims) | 240 · 321 30-day fills |
|---|---|
| Patients | 40 |
| Total drug cost | $45,839 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- The Department of PsychiatryOrange, CA · 29 clinicians
Hospital affiliation
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$57.59 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Axsome Therapeutics, Inc. | $38.72 | 1 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $18.87 | 1 |
What the 2025 payments were for
- Food and Beverage$57.59 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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