Kristine Kay Yin, M.D.
Ophthalmology Physician · Los Angeles, CA
Kristine Kay Yin, M.D. is an ophthalmology physician with a practice address in Los Angeles, California, and NPI 1275853608, issued on Jun 8, 2010. Check the license (California A125816, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kristine Kay Yin
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A125816 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4650 W Sunset Blvd, Los Angeles, CA 90027
- Phone
- (323) 361-2450
- Enumerated
- Jun 8, 2010
- Record last updated
- Feb 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130617000368); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2009
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 4650 W Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kristine Kay Yin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A125816Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% more Medicare Part D claims than the average ophthalmology physician in 2024
2,694 Medicare Part D claims for 696 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Latanoprost805 claims
- Dorzolamide-Timolol356 claims
- Timolol Maleate250 claims
- Brimonidine Tartrate212 claims
- Neomycin-Polymyxin-Dexameth110 claims
- Prednisolone Acetate105 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: $334.54
12 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- East-West Eye Institute A Medical CorporationCovina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kristine Kay Yin among 2,899 ophthalmology physician records in California
Kristine Kay Yin, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 74% of them.
- NPI issued2010 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2009 · median 2001 among the 1,907 with a school on file
- Record last updated2020 · 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 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Los Angeles → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Arnold Barron, MDLos Angeles, CA 900271013084011
- Mark Borchert, M.D.Los Angeles, CA 900271548200082
- Angela Buffenn, MDLos Angeles, CA 900271508957895
- Melvin Dea, M.D., PH.D.Los Angeles, CA 900271780630467
- Ervin Fang, MDLos Angeles, CA 900271205907276
- Alan Koerner, MDLos Angeles, CA 900271942369699
- David Marlin, MDLos Angeles, CA 900271346317237
- Ellen Matsumoto, ODLos Angeles, CA 900271558452441
Common questions
What is Kristine Kay Yin, M.D.'s NPI number?
Kristine Kay Yin, M.D.'s National Provider Identifier (NPI) is 1275853608, issued on Jun 8, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Kristine Kay Yin, M.D. located?
The NPPES record lists a practice address at 4650 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (323) 361-2450. Providers update this record themselves, so call before visiting.
How can I verify Kristine Kay Yin, M.D.'s license?
NPPES lists California license number A125816, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kristine Kay Yin, M.D. prescribe under Medicare Part D?
In 2024, Kristine Kay Yin, M.D. had 2,694 Medicare Part D claims for 696 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.