DR. JOON KI YOON M.D.
NPI 1093984437
Internal Medicine in Los Angeles, CA
About Dr. Joon Ki Yoon M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOON KI YOON M.D. (NPI 1093984437) is an individual internal medicine provider in Los Angeles, California, licensed in California (A38293) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS and is a graduate of Other (1977).
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. Joon Ki Yoon 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 Joon Yoon 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 90012
- 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 90012 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90012
LOS ANGELES, CA 90012
LOS ANGELES, CA 90012
LOS ANGELES, CA 90012
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 Joon Yoon's NPI number?
The NPI number for Joon Yoon is 1093984437. It was assigned to this individual provider in the NPPES registry on February 28, 2008.
Where is Joon Yoon located?
Joon Yoon practices at 241 N Figueroa St Central Health Center, Suite 312, Los Angeles, CA 90012. The listed phone number is (213) 240-8049.
What is Joon Yoon's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Joon Yoon enrolled in Medicare?
Yes. Joon Yoon 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 Joon Yoon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joon Yoon 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 Joon Yoon'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 Joon Yoon was last updated on February 28, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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. Joon Ki Yoon, M.D. · NPI 1093984437
Internal Medicine physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since February 28, 2008.
## Identity
- **NPI:** 1093984437 (Entity type: Individual)
- **Enumerated:** February 28, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A38293 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 241 N FIGUEROA ST, CENTRAL HEALTH CENTER, SUITE 312, Los Angeles, CA 90012-2601
- **Phone:** (213) 240-8049 · **Fax:** (213) 202-6096
## 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 1447444294, Los Angeles, CA); Los Angeles County Department Of Public Health (NPI 1962109033, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1977
## Record status
- **NPPES last updated:** February 28, 2008
- **Other identifiers:** Medicare UPIN F00360 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1093984437) · Data from the CMS NPPES public registry.