DR. S. JOHN WHANG M.D.
NPI 1851346548
Emergency Medicine in Los Angeles, CA
About Dr. S. John Whang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. S. JOHN WHANG M.D. (NPI 1851346548) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A92903) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Irvine, California College Of Medicine (1999).
NPPES Registry Identity
Specialties & Licenses
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 and accepts Medicare assignment
Dr. S. John Whang M.d. 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
5Medicare enrollment records show S. Whang reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Glendale, CA 91206
- Reassigned Medicare billing, California enrollment
- 49 clinicians in this Medicare group
Panorama City, CA 91402
- Reassigned Medicare billing, California enrollment
- 121 clinicians in this Medicare group
Whittier, CA 90602
- Reassigned Medicare billing, California enrollment
- 121 clinicians in this Medicare group
Norwalk, CA 90650
- Reassigned Medicare billing, California enrollment
- 55 clinicians in this Medicare group
Torrance, CA 90505
- Reassigned Medicare billing, California enrollment
- 388 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 90020 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90020
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 S. Whang's NPI number?
The NPI number for S. Whang is 1851346548. It was assigned to this individual provider in the NPPES registry on May 23, 2006.
Where is S. Whang located?
S. Whang practices at 3223 W 6th St Unit #1108, Los Angeles, CA 90020. The listed phone number is (323) 633-2399.
What is S. Whang's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is S. Whang enrolled in Medicare?
Yes. S. Whang 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 S. Whang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), S. Whang reassigns Medicare benefits to 5 organizations: Glendale Adventist Emergency Physicians Incorporated (Glendale, CA), Can Emergency Physicians Medical Group, Inc. (Panorama City, CA), Intercommunity Emergency Medical Group (Whittier, CA), California Hospitalists Emergency Physicians Medical Group Inc (Norwalk, CA) and Torrance Health Association Inc (Torrance, 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 S. Whang'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 S. Whang was last updated on June 5, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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. S. John Whang, M.D. · NPI 1851346548
Emergency Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since May 23, 2006.
## Identity
- **NPI:** 1851346548 (Entity type: Individual)
- **Enumerated:** May 23, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A92903 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3223 W 6TH ST, UNIT #1108, Los Angeles, CA 90020-5005
- **Phone:** (323) 633-2399
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Glendale Adventist Emergency Physicians Incorporated (NPI 1679907869, Glendale, CA); Can Emergency Physicians Medical Group, Inc. (NPI 1265810006, Panorama City, CA); Intercommunity Emergency Medical Group (NPI 1871535286, Whittier, CA); California Hospitalists Emergency Physicians Medical Group Inc (NPI 1760648539, Norwalk, CA); Torrance Health Association Inc (NPI 1083903124, Torrance, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Irvine, California College Of Medicine, class of 1999
## Record status
- **NPPES last updated:** June 5, 2015
- **Other identifiers:** Medicare UPIN H74159
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Source: [NPI Profile](https://npiprofile.com/npi/1851346548) · Data from the CMS NPPES public registry.