Dr. Won I. Choi, MD
Psychiatry (Psychiatry Physician)
At a glance
- In the NPI registry since
- 2006
Licensed in California since 1977, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Psychiatry Physician primary
CA license A31280 (first issued 1977; current) -
Addiction Psychiatry Physician
CA license A31280 (first issued 1977; current) -
Geriatric Psychiatry Physician
CA license A31280 (first issued 1977; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Benztropine Mesylate Other prescribers in Anaheim, CA | 50 |
| Aripiprazole Other prescribers in Anaheim, CA | 45 |
| Clozapine Other prescribers in Anaheim, CA | 44 |
| Olanzapine Odt (olanzapine) Other prescribers in Anaheim, CA | 41 |
| Clonazepam Other prescribers in Anaheim, CA | 38 |
| Atorvastatin Calcium Other prescribers in Anaheim, CA | 36 |
| Haloperidol Other prescribers in Anaheim, CA | 32 |
| Fanapt (iloperidone) | 31 |
| Quetiapine Fumarate Er (quetiapine fumarate) Other prescribers in Anaheim, CA | 31 |
| Divalproex Sodium Other prescribers in Anaheim, CA | 28 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $139 in total to this clinician.
| E.r. Squibb & Sons, L.l.c. | $139 |
|---|
| Food and Beverage | $139 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.