DR. MARLENA AKIKO CHU O.D.
NPI 1255597266
Optometrist in Berkeley, CA
About Dr. Marlena Akiko Chu O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARLENA AKIKO CHU O.D. (NPI 1255597266) is an individual optometrist in Berkeley, California, licensed in California (13584T) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of University Of California - School Of Optometry (2008).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Dr. Marlena Akiko Chu O.d. 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
2Medicare enrollment records show Marlena Chu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Berkeley, CA 94720
- Reassigned Medicare billing, California enrollment
- 96 clinicians in this Medicare group
San Francisco, CA 94103
- Reassigned Medicare billing, California enrollment
- 7 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94720 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Marlena Chu's NPI number?
The NPI number for Marlena Chu is 1255597266. It was assigned to this individual provider in the NPPES registry on July 30, 2008.
Where is Marlena Chu located?
Marlena Chu practices at U.C. Berkeley School Of Optometry 200 Minor Hall, Berkeley, CA 94720. The listed phone number is (510) 642-2020.
What is Marlena Chu's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Marlena Chu enrolled in Medicare?
Yes. Marlena Chu 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 Marlena Chu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marlena Chu reassigns Medicare benefits to 2 organizations: Regents Of The University Of California At Berkeley (Berkeley, CA) and Lighthouse For The Blind And Visually Impaired (San Francisco, 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 Marlena Chu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marlena Chu accept?
Health plans from Providence Health Plan list Marlena Chu 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 Marlena Chu was last updated on September 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 days 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. Marlena Akiko Chu, O.D. · NPI 1255597266
Optometrist provider in Berkeley, California. Individual provider, active in the CMS NPPES registry since July 30, 2008.
## Identity
- **NPI:** 1255597266 (Entity type: Individual)
- **Enumerated:** July 30, 2008
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 13584T (California)
- **Sole proprietor:** No
## Practice location
- **Address:** U.C. BERKELEY SCHOOL OF OPTOMETRY, 200 MINOR HALL, Berkeley, CA 94720-2020
- **Phone:** (510) 642-2020 · **Fax:** (510) 642-8012
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California At Berkeley (NPI 1306908058, Berkeley, CA); Lighthouse For The Blind And Visually Impaired (NPI 1396856381, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California - School Of Optometry, class of 2008
## Record status
- **NPPES last updated:** September 9, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1255597266) · Data from the CMS NPPES public registry.