DR. JAMES WUN RHEE MD
NPI 1528028933
Emergency Medicine - Medical Toxicology in Loma Linda, CA
About Dr. James Wun Rhee Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAMES WUN RHEE MD (NPI 1528028933) is an individual medical toxicology provider in Loma Linda, California, licensed in Illinois (036111387) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Connecticut School Of Medicine (2001).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. James Wun Rhee Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show James Rhee reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Banning, CA 92220
- Reassigned Medicare billing, California enrollment
- 50 clinicians in this Medicare group
Murrieta, CA 92563
- Reassigned Medicare billing, California enrollment
- 240 clinicians in this Medicare group
Murrieta, CA 92562
- Reassigned Medicare billing, California enrollment
- 112 clinicians in this Medicare group
Laguna Beach, CA 92651
- Reassigned Medicare billing, California enrollment
- 110 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92354 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
LOMA LINDA, CA 92354
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 James Rhee's NPI number?
The NPI number for James Rhee is 1528028933. It was assigned to this individual provider in the NPPES registry on March 28, 2006.
Where is James Rhee located?
James Rhee practices at 11234 Anderson St A108, Loma Linda, CA 92354. The listed phone number is (909) 558-8551.
What is James Rhee's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Medical Toxicology, with taxonomy code 207PT0002X.
Is James Rhee enrolled in Medicare?
Yes. James Rhee is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for James Rhee's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Rhee reassigns Medicare benefits to 4 organizations: MD Karan Singh Professional Corp (Banning, CA), United Medical Doctors (Murrieta, CA), Em Alliance California, Apc (Murrieta, CA) and Mission Viejo Emergency Medical Associates, Inc. (Laguna Beach, CA). Each 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 James Rhee'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 James Rhee was last updated on July 1, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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. James Wun Rhee, MD · NPI 1528028933
Medical Toxicology physician in Loma Linda, California. Individual provider, active in the CMS NPPES registry since March 28, 2006.
## Identity
- **NPI:** 1528028933 (Entity type: Individual)
- **Enumerated:** March 28, 2006
- **Primary specialty:** Emergency Medicine - Medical Toxicology · taxonomy 207PT0002X
- **State license:** 036111387 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 11234 ANDERSON ST, A108, Loma Linda, CA 92354-2804
- **Phone:** (909) 558-8551
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): MD Karan Singh Professional Corp (NPI 1932964962, Banning, CA); United Medical Doctors (NPI 1770559981, Murrieta, CA); Em Alliance California, Apc (NPI 1376305755, Murrieta, CA); Mission Viejo Emergency Medical Associates, Inc. (NPI 1134355597, Laguna Beach, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Connecticut School Of Medicine, class of 2001
## Record status
- **NPPES last updated:** July 1, 2013
- **Other identifiers:** Medicare ID-Type Unspecified K13409 (IL); Medicaid 036111387 (IL); Medicare UPIN I14473 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1528028933) · Data from the CMS NPPES public registry.