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DR. CHRISTINA DARLENE LEUNG O.D.
NPI 1730374802
Optometrist in Covina, CA

Active since September 11, 2007PECOS Enrolled
475 W BADILLO ST, COVINA, CA 91723(626) 732-2200(626) 732-2900 Get Directions Write a Review

NPPES record last updated: September 28, 2023. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Christina Darlene Leung O.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHRISTINA DARLENE LEUNG O.D. (NPI 1730374802) is an individual optometrist in Covina, California, licensed in California (13311) and active in the NPI registry since September 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Laguna Hills.

NPPES Registry Identity

NPI1730374802
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameDR. CHRISTINA DARLENE LEUNGCredential: O.D.
Location Address475 W BADILLO STCovina, CA 91723-1834
Mailing Address25252 Mcintyre St, Suite DLaguna Hills, CA 92653-5448 · (949) 586-8200 · Fax (949) 586-1538
Phone(626) 732-2200
Fax(626) 732-2900
Sole ProprietorNo
Enumeration DateSeptember 11, 2007
Last NPPES UpdateSeptember 28, 2023
NPPES CertifiedSeptember 28, 2023
✔ NPI 1730374802 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in CA · 13311
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
475 W BADILLO ST, Covina, CA 91723
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Other Names 1

Professional Name (2)Dr. Christina Darlene Ko O.d.

Secondary Practice Location 1

Location 125252 McIntyre St, Suite DLaguna Hills, CA 92653-5448 · Phone (949) 586-8200 · Fax (949) 586-1538

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Christina Darlene Leung O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Christina Leung reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

East-West Eye Institute A Medical Corporation
Same address
Ophthalmology
475 W BADILLO ST
Covina, CA 91723
  • Reassigned Medicare billing, California enrollment
  • 25 clinicians in this Medicare group
NPI 1285270900 (626) 732-2200
William D. Mosier, M.D., Inc., A Professional Medical Corporation
13 mi
Ophthalmology
265 LAGUNA RD
Fullerton, CA 92835
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: William D Mosier MD Inc A Professional Medical Corporation
  • 6 clinicians in this Medicare group
NPI 1003476508 (714) 871-2570
Dr Aaron M Sako A Professional Optometric Corp
36 mi
Optometrist
25252 MCINTYRE ST, SUITE D
Laguna Hills, CA 92653
  • Reassigned Medicare billing, California enrollment
  • 6 clinicians in this Medicare group
NPI 1245339704 (949) 586-8200

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 91723 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

EAST-WEST EYE INSTITUTE A MEDICAL CORPORATION
Ophthalmology
475 W BADILLO ST
COVINA, CA 91723
Los Angeles County (626) 732-2200
KAVITA SURTI MD INC
Ophthalmology
475 W BADILLO ST
COVINA, CA 91723
Los Angeles County (626) 732-2200
DR. JEFFREY M. FREY M.D.
Ophthalmology
475 W BADILLO ST
COVINA, CA 91723
Los Angeles County (626) 732-2200

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 Christina Leung's NPI number?

The NPI number for Christina Leung is 1730374802. It was assigned to this individual provider in the NPPES registry on September 11, 2007. The provider is also known as Dr. Christina Darlene Ko O.D..

Where is Christina Leung located?

Christina Leung practices at 475 W Badillo St, Covina, CA 91723. The listed phone number is (626) 732-2200.

What is Christina Leung's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Is Christina Leung enrolled in Medicare?

Yes. Christina Leung is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Christina Leung's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christina Leung reassigns Medicare benefits to 3 organizations: East-West Eye Institute A Medical Corporation (Covina, CA), William D. Mosier, M.D., Inc., A Professional Medical Corporation (Fullerton, CA) and Dr Aaron M Sako A Professional Optometric Corp (Laguna Hills, 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 Christina Leung's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Christina Leung accept?

Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and Blue Cross and Blue Shield of Texas list Christina Leung 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 Christina Leung was last updated on September 28, 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.