DR. WON I CHOI MD
NPI 1689683872
Psychiatry & Neurology - Psychiatry in Anaheim, CA
About Dr. Won I Choi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WON I CHOI MD (NPI 1689683872) is an individual psychiatry provider in Anaheim, California, licensed in California (A31280) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Won I Choi Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Won Choi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Riverside, CA 92506
- Reassigned Medicare billing, California enrollment
- 40 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92804 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ANAHEIM, CA 92804
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Won Choi's NPI number?
The NPI number for Won Choi is 1689683872. It was assigned to this individual provider in the NPPES registry on August 5, 2006.
Where is Won Choi located?
Won Choi practices at 645 S Beach Blvd, Anaheim, CA 92804. The listed phone number is (714) 821-1993.
What is Won Choi's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Won Choi enrolled in Medicare?
Yes. Won Choi is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Won Choi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Won Choi reassigns Medicare benefits to Nebula Health, LLC (Riverside, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Won Choi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Won Choi was last updated on February 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Won I Choi, MD · NPI 1689683872
Psychiatry physician in Anaheim, California. Individual provider, active in the CMS NPPES registry since August 5, 2006.
## Identity
- **NPI:** 1689683872 (Entity type: Individual)
- **Enumerated:** August 5, 2006
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** A31280 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 645 S BEACH BLVD, Anaheim, CA 92804
- **Phone:** (714) 821-1993
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Nebula Health, LLC (NPI 1194479501, Riverside, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 15, 2024
- **Other identifiers:** Medicaid 519026 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1689683872) · Data from the CMS NPPES public registry.