RUTH L SUN MD
NPI 1205083318
Anesthesiology in Los Angeles, CA
About Ruth L Sun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RUTH L SUN MD (NPI 1205083318) is an individual anesthesiology provider in Los Angeles, California, licensed in California (A108760) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses
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
Ruth L Sun 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 Ruth Sun reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Beverly Hills, CA 90211
- Reassigned Medicare billing, California enrollment
- 88 clinicians in this Medicare group
Lynwood, CA 90262
- Reassigned Medicare billing, California enrollment
- 83 clinicians in this Medicare group
Whittier, CA 90605
- Reassigned Medicare billing, California enrollment
- 6 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.
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.
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 Ruth Sun's NPI number?
The NPI number for Ruth Sun is 1205083318. It was assigned to this individual provider in the NPPES registry on August 20, 2008.
Where is Ruth Sun located?
Ruth Sun practices at 531 W College St, Los Angeles, CA 90012. The listed phone number is (213) 624-8411.
What is Ruth Sun's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Ruth Sun enrolled in Medicare?
Yes. Ruth Sun 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 Ruth Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ruth Sun reassigns Medicare benefits to 4 organizations: Southern California Permanente Medical Group (Los Angeles, CA), Tip Top Anesthesia Group Inc (Beverly Hills, CA), Landmark Anesthesia Medical Group (Lynwood, CA) and Edward H Lee Do Inc (Whittier, 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 Ruth Sun'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 Ruth Sun was last updated on October 25, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.
# Ruth L Sun, MD · NPI 1205083318
Anesthesiology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since August 20, 2008.
## Identity
- **NPI:** 1205083318 (Entity type: Individual)
- **Enumerated:** August 20, 2008
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A108760 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 531 W COLLEGE ST, Los Angeles, CA 90012-2315
- **Phone:** (213) 624-8411
## 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): Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA); Tip Top Anesthesia Group Inc (NPI 1508283698, Beverly Hills, CA); Landmark Anesthesia Medical Group (NPI 1770035024, Lynwood, CA); Edward H Lee Do Inc (NPI 1548566599, Whittier, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** October 25, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1205083318) · Data from the CMS NPPES public registry.