DR. MARK EDWARD NAKANO OD
NPI 1821072133
Optometrist in Torrance, CA
About Dr. Mark Edward Nakano Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK EDWARD NAKANO OD (NPI 1821072133) is an individual optometrist in Torrance, California, licensed in California (8818TPL) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1986).
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
Dr. Mark Edward Nakano 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 Reassignments
2Medicare enrollment records show Mark Nakano reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Long Beach, CA 90806
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
Los Angeles, CA 90037
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Marshall B Ketchum University
- 131 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 90503 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TORRANCE, CA 90503
TORRANCE, CA 90503
TORRANCE, CA 90503
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 Mark Nakano's NPI number?
The NPI number for Mark Nakano is 1821072133. It was assigned to this individual provider in the NPPES registry on November 30, 2005.
Where is Mark Nakano located?
Mark Nakano practices at 4201 Torrance Blvd. Suite 580, Torrance, CA 90503. The listed phone number is (310) 316-6726.
What is Mark Nakano's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Mark Nakano enrolled in Medicare?
Yes. Mark Nakano 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 Mark Nakano's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Nakano reassigns Medicare benefits to 2 organizations: Angels For Sight (Long Beach, CA) and Marshall B. Ketchum University/University Eye Center At Los Angeles (Los Angeles, 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 Mark Nakano's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Nakano 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 Mark Nakano 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 Mark Nakano was last updated on April 29, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Mark Edward Nakano, OD · NPI 1821072133
Optometrist provider in Torrance, California. Individual provider, active in the CMS NPPES registry since November 30, 2005.
## Identity
- **NPI:** 1821072133 (Entity type: Individual)
- **Enumerated:** November 30, 2005
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 8818TPL (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4201 TORRANCE BLVD., SUITE 580, Torrance, CA 90503
- **Phone:** (310) 316-6726 · **Fax:** (310) 316-6856
## 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): Angels For Sight (NPI 1881408433, Long Beach, CA); Marshall B. Ketchum University/University Eye Center At Los Angeles (NPI 1558467225, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1986
## Record status
- **NPPES last updated:** April 29, 2011
- **Other identifiers:** Medicare UPIN T70289
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Source: [NPI Profile](https://npiprofile.com/npi/1821072133) · Data from the CMS NPPES public registry.