SARAH ONAGA OD
NPI 1710417522
Optometrist in Tustin, CA
About Sarah Onaga Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SARAH ONAGA OD (NPI 1710417522) is an individual optometrist in Tustin, California, licensed in California (33701TLG) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS and is a graduate of Southern California College Of Optometry (2017).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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
Sarah Onaga Od 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 Sarah Onaga reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 3 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 8
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92780 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TUSTIN, CA 92780
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 Sarah Onaga's NPI number?
The NPI number for Sarah Onaga is 1710417522. It was assigned to this individual provider in the NPPES registry on June 14, 2017.
Where is Sarah Onaga located?
Sarah Onaga practices at 190 El Camino Real, Tustin, CA 92780. The listed phone number is (714) 669-1121.
What is Sarah Onaga's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Sarah Onaga enrolled in Medicare?
Yes. Sarah Onaga 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 Sarah Onaga's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Onaga reassigns Medicare benefits to Darren M Brown Od Apc (Tustin, 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 Sarah Onaga's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sarah Onaga accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list Sarah Onaga as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Sarah Onaga was last updated on February 13, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Sarah Onaga, OD · NPI 1710417522
Optometrist provider in Tustin, California. Individual provider, active in the CMS NPPES registry since June 14, 2017.
## Identity
- **NPI:** 1710417522 (Entity type: Individual)
- **Enumerated:** June 14, 2017
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 33701TLG (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 190 EL CAMINO REAL, Tustin, CA 92780-3602
- **Phone:** (714) 669-1121
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Darren M Brown Od Apc (NPI 1922055458, Tustin, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Southern California College Of Optometry, class of 2017
## Record status
- **NPPES last updated:** February 13, 2018
- **Other identifiers:** Other 33701TLG (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1710417522) · Data from the CMS NPPES public registry.