LING TSENG YEN OD OPTOMETRIST
NPI 1972520518
Optometrist in Mission Viejo, CA
About Ling Tseng Yen Od Optometrist NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LING TSENG YEN OD OPTOMETRIST (NPI 1972520518) is an individual optometrist in Mission Viejo, California, licensed in California (12187T) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS and is a graduate of New England College Of Optometry (2002).
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
Ling Tseng Yen Od Optometrist 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 Reassignment
Medicare enrollment records show Ling Yen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Anaheim, CA 92807
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1316979834 (California)
- 13,921 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 92691 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 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
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 Ling Yen's NPI number?
The NPI number for Ling Yen is 1972520518. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Ling Yen located?
Ling Yen practices at 23781 Maquina, Mission Viejo, CA 92691. The listed phone number is (888) 988-2800.
What is Ling Yen's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Ling Yen enrolled in Medicare?
Yes. Ling Yen 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 organization bills Medicare for Ling Yen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ling Yen reassigns Medicare benefits to Southern California Permanente Medical Group (Anaheim, CA). The 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 Ling Yen'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 Ling Yen was last updated on June 8, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Ling Tseng Yen, OD OPTOMETRIST · NPI 1972520518
Optometrist provider in Mission Viejo, California. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1972520518 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 12187T (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 23781 MAQUINA, Mission Viejo, CA 92691-2765
- **Phone:** (888) 988-2800
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Southern California Permanente Medical Group (NPI 1952333460, Anaheim, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New England College Of Optometry, class of 2002
## Record status
- **NPPES last updated:** June 8, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1972520518) · Data from the CMS NPPES public registry.