DR. YOUNG K. AHN MD
NPI 1497914931
Anesthesiology in Los Angeles, CA
About Dr. Young K. Ahn Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. YOUNG K. AHN MD (NPI 1497914931) is an individual anesthesiology provider in Los Angeles, California, licensed in Virginia (0101254614) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, is affiliated with Bon Secours St Francis Medical Center, and is a graduate of Other (2007).
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. Young K. Ahn 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 Young Ahn reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
St. Louis, MO 63141
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Critical Care Services PC
- 5 clinicians in this Medicare group
Leesburg, VA 20176
- Reassigned Medicare billing, Virginia enrollment
- 1,217 clinicians in this Medicare group
Woodbridge, VA 22191
- Reassigned Medicare billing, Virginia enrollment
- 170 clinicians in this Medicare group
Arlington, VA 22205
- Reassigned Medicare billing, District of Columbia enrollment
- 158 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 2
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bon Secours St Francis Medical Center
Acute Care Hospitals · Midlothian, VAFrequently 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 Young Ahn's NPI number?
The NPI number for Young Ahn is 1497914931. It was assigned to this individual provider in the NPPES registry on June 9, 2008.
Where is Young Ahn located?
Young Ahn practices at University Of California Los Angeles 757 Westwood Plaza, Suite 3325, Los Angeles, CA 90095. The listed phone number is (310) 267-8693.
What is Young Ahn's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Young Ahn enrolled in Medicare?
Yes. Young Ahn 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 Young Ahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Young Ahn reassigns Medicare benefits to 4 organizations: Critical Care Services, P.C. (St. Louis, MO), American Anesthesiology Of Virginia, PC (Leesburg, VA), Premier Anesthesia Of Virginia LLC (Woodbridge, VA) and Dominion Anesthesia, PLLC (Arlington, VA). 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 Young Ahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Young Ahn affiliated with any hospitals?
According to CMS data, Young Ahn is affiliated with Bon Secours St Francis Medical Center.
When was this NPI record last updated?
The NPPES record for Young Ahn was last updated on March 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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. Young K. Ahn, MD · NPI 1497914931
Anesthesiology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since June 9, 2008.
## Identity
- **NPI:** 1497914931 (Entity type: Individual)
- **Enumerated:** June 9, 2008
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 0101254614 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** UNIVERSITY OF CALIFORNIA LOS ANGELES, 757 WESTWOOD PLAZA, SUITE 3325, Los Angeles, CA 90095-0001
- **Phone:** (310) 267-8693
## 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): Critical Care Services, P.C. (NPI 1942256250, St. Louis, MO); American Anesthesiology Of Virginia, PC (NPI 1053675199, Leesburg, VA); Premier Anesthesia Of Virginia LLC (NPI 1255986147, Woodbridge, VA); Dominion Anesthesia, PLLC (NPI 1073554952, Arlington, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** March 17, 2026
- **Other identifiers:** Medicaid 1497914931 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1497914931) · Data from the CMS NPPES public registry.