Louis Cai
Ophthalmology Physician · Campbell, CA
Louis Cai is an ophthalmology physician with a practice address in Campbell, California, and NPI 1194220632, issued on Mar 27, 2018. Check the license (California A194964, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Louis Cai
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- A194964 CA
ME154746 FL
Self-reported in NPPES; status is on the state search - Practice location
- 3395 S Bascom Ave, Campbell, CA 95008
- Phone
- (140) 855-9066
- Enumerated
- Mar 27, 2018
- Record last updated
- Aug 2, 2024
- Medicare enrollment
- Enrolled (PECOS I20240717001561); accepts Medicare assignment
- Medical or professional school
- Miami Medical College, 2014
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 3395 S Bascom Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Clement Chow, M.D.Ophthalmology Physician1265606461
- Philip Haworth, PTPhysical Therapist1669455879
- Lingmin He, M.D.Ophthalmology Physician1730405184
Verify Louis Cai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A194964Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average ophthalmology physician in 2024
238 Medicare Part D claims for 107 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Prednisolone Acetate47 claims
- Dorzolamide-Timolol32 claims
- Neomycin-Polymyxin-Dexameth31 claims
- Brimonidine Tartrate24 claims
- Ketorolac Tromethamine14 claims
- Valacyclovir11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $796.26
18 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US 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
- Retinal Diagnostic Center A Medical CorporationSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Louis Cai among 2,899 ophthalmology physician records in California
Louis Cai 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 2018, is newer than 90% of them.
- NPI issued2018 · 90% of these records are older, 8% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2014 · median 2001 among the 1,907 with a school on file
- Record last updated2024 · 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 Campbell → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Howard Chen, MDCampbell, CA 950081699763748
- Clement Chow, M.D.Campbell, CA 950081265606461
- Amr Dessouki, MDCampbell, CA 950081013905389
- Lingmin He, M.D.Campbell, CA 950081730405184
- Deborah Alcorn, MDCupertino, CA 950141346332780
- Tarek El-Sawy, M.D.Cupertino, CA 950141922269083
- James Liu, M.D.Cupertino, CA 950141831139997
- Huan PhanCupertino, CA 950141841208352
Common questions
What is Louis Cai's NPI number?
Louis Cai's National Provider Identifier (NPI) is 1194220632, issued on Mar 27, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Louis Cai located?
The NPPES record lists a practice address at 3395 S Bascom Ave, Campbell, CA, 95008. Phone: (140) 855-9066. Providers update this record themselves, so call before visiting.
How can I verify Louis Cai's license?
NPPES lists California license number A194964, 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 Louis Cai prescribe under Medicare Part D?
In 2024, Louis Cai had 238 Medicare Part D claims for 107 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Louis Cai's MIPS final score?
The 2023 MIPS final score is 81.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.