James K. Yi, O.D.
Optometrist · Simi Valley, CA
James K. Yi, O.D. is an optometrist with a practice address in Simi Valley, California, and NPI 1104932193, issued on Aug 22, 2006. Check the license (California 13065, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James K. Yi
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 13065 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2812 Cochran St, Simi Valley, CA 93065
- Phone
- (805) 527-6164
- Enumerated
- Aug 22, 2006
- Record last updated
- Dec 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (805) 527-4391
- Medicare enrollment
- Enrolled (PECOS I20110621000431); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 2006
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 2812 Cochran St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- William Shields, O.D.Optometrist1538165303
Verify James K. Yi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 13065Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average optometrist in 2024
61 Medicare Part D claims for 20 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Latanoprost35 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupFontana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James K. Yi among 8,308 optometrist records in California
James K. Yi, O.D. 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 66% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2006 · median 2008 among the 3,573 with a school on file
- Record last updated2021 · 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).
22 optometrist records list a practice address in Simi Valley
They are 22 of the 1,397 NPPES records with a practice address in Simi Valley, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Simi Valley → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Elsa Chow, O.D.Simi Valley, CA 930651821152752
- Stanley Eckert, ODSimi Valley, CA 930651053502328
- Maurice Feldman, ODSimi Valley, CA 930651053461459
- James Foster, O.D.Simi Valley, CA 930651740343482
- Jaspinder Kalra, O.D.Simi Valley, CA 930651235444118
- Carrie Kubota, O.D.Simi Valley, CA 930651356577217
- Gracie Ner, OPTOMETRISTSimi Valley, CA 930651073663068
- Joanne Parungao, O.D.Simi Valley, CA 930651386897130
Common questions
What is James K. Yi, O.D.'s NPI number?
James K. Yi, O.D.'s National Provider Identifier (NPI) is 1104932193, issued on Aug 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James K. Yi, O.D. located?
The NPPES record lists a practice address at 2812 Cochran St, Simi Valley, CA, 93065. Phone: (805) 527-6164. Providers update this record themselves, so call before visiting.
How can I verify James K. Yi, O.D.'s license?
NPPES lists California license number 13065, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does James K. Yi, O.D. prescribe under Medicare Part D?
In 2024, James K. Yi, O.D. had 61 Medicare Part D claims for 20 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.