DR. STEVEN KYONG WON HWANG M.D.
NPI 1235334749
Internal Medicine - Infectious Disease in Los Angeles, CA
About Dr. Steven Kyong Won Hwang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEVEN KYONG WON HWANG M.D. (NPI 1235334749) is an individual infectious disease provider in Los Angeles, California, licensed in California (A062230) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS and is a graduate of Saint Louis University School Of Medicine (1995).
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. Steven Kyong Won Hwang 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
2Medicare enrollment records show Steven Hwang reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90038
- Reassigned Medicare billing, California enrollment
- 1,939 clinicians in this Medicare group
Los Angeles, CA 90012
- Reassigned Medicare billing, California enrollment
- 60 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 90019 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 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90019
LOS ANGELES, CA 90019
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 Steven Hwang's NPI number?
The NPI number for Steven Hwang is 1235334749. It was assigned to this individual provider in the NPPES registry on June 15, 2007.
Where is Steven Hwang located?
Steven Hwang practices at 903 Crenshaw Blvd 204, Los Angeles, CA 90019. The listed phone number is (213) 675-7781.
What is Steven Hwang's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Steven Hwang enrolled in Medicare?
Yes. Steven Hwang 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 Steven Hwang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Hwang reassigns Medicare benefits to 2 organizations: County Of Los Angeles (Los Angeles, CA) and Los Angeles County Department Of Public Health (Los Angeles, 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 Steven Hwang'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 Steven Hwang was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Steven Kyong Won Hwang, M.D. · NPI 1235334749
Infectious Disease physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since June 15, 2007.
## Identity
- **NPI:** 1235334749 (Entity type: Individual)
- **Enumerated:** June 15, 2007
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** A062230 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 903 CRENSHAW BLVD, 204, Los Angeles, CA 90019-1964
- **Phone:** (213) 675-7781
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): County Of Los Angeles (NPI 1083808836, Los Angeles, CA); Los Angeles County Department Of Public Health (NPI 1962109033, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Saint Louis University School Of Medicine, class of 1995
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified A62230; Medicaid 00A622300 (CA); Medicare UPIN H49946 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1235334749) · Data from the CMS NPPES public registry.