NPPES file of Aug 9, 2026

Mark Edward Nakano, OD

Optometrist · Torrance, CA

Mark Edward Nakano, OD is an optometrist with a practice address in Torrance, California, and NPI 1821072133, issued on Nov 30, 2005. Check the license (California 8818TPL, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821072133
Name
Mark Edward Nakano
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License number
8818TPL CA
Self-reported in NPPES; status is on the state search
Practice location
4201 Torrance Blvd., Torrance, CA 90503
Phone
(310) 316-6726
Enumerated
Nov 30, 2005
Record last updated
Apr 29, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(310) 316-6856
Medicare enrollment
Enrolled (PECOS I20031117000907); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 4201 Torrance Blvd.

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Basil Younes, D.O.Cardiovascular Disease Physician1669674933

Verify Mark Edward Nakano in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 8818TPL
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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64% fewer Medicare Part D claims than the average optometrist in 2024

100 Medicare Part D claims for 28 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 51% of claims.

  1. Mark Nakano100
  2. Specialty average277

Most prescribed

  1. Latanoprost50 claims
  2. Lumigan13 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $532.51

12 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Nakano$532.51
  2. Specialty average$769.99

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Marshall B Ketchum UniversityLos Angeles, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Edward Nakano among 8,308 optometrist records in California

Mark Edward Nakano, OD is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 94% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 43% of these records are
  • Graduated1986 · median 2008 among the 3,573 with a school on file
  • Record last updated2011 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in California

There are 8,308 optometrist records in California.

The 8 optometrist records with the nearest ZIP codes

  1. Geri Bonde, O.D.Torrance, CA 905031316982556
  2. Jessica Chang, O.D.Torrance, CA 905031972667889
  3. Albert Chun, O.D.Torrance, CA 905031952378010
  4. David Cloutier, O.D.Torrance, CA 905031578506549
  5. Jeffrey Fleming, O.D.Torrance, CA 905031679542989
  6. Deborah Geering-Fend, O.D.Torrance, CA 905031669553871
  7. Emily Kim, O.D.Torrance, CA 905031679689863
  8. Grace Kuo, O.D.Torrance, CA 905031588711519

Common questions

What is Mark Edward Nakano, OD's NPI number?

Mark Edward Nakano, OD's National Provider Identifier (NPI) is 1821072133, issued on Nov 30, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Mark Edward Nakano, OD located?

The NPPES record lists a practice address at 4201 Torrance Blvd., Torrance, CA, 90503. Phone: (310) 316-6726. Providers update this record themselves, so call before visiting.

How can I verify Mark Edward Nakano, OD's license?

NPPES lists California license number 8818TPL, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Mark Edward Nakano, OD prescribe under Medicare Part D?

In 2024, Mark Edward Nakano, OD had 100 Medicare Part D claims for 28 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.