Louis Cai

  • Campbell, CA
  • Ophthalmologist
NPI1194220632PAC ID8729314034
Medicare services, 2024
5,097
Medicare patients, 2024
382
Part D claims, 2024
238
Publications
24
MIPS score, 2024
100
Practice address
3395 S Bascom Ave, Campbell, CA 95008
Practice phone
Call (408) 559-0666
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Retinal Diagnostic Center a Medical Corporation

Campbell, California

See all 6 affiliations

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Louis Cai is an ophthalmologist in Campbell, California

Louis Cai practices at Retinal Diagnostic Center a Medical Corporation in Campbell, California.

Louis Cai's NPI, 1194220632, was assigned on March 27, 2018. Louis Cai graduated from University of Miami, Miller School of Medicine in 2018. Louis Cai holds Florida license ME154746.

NPI and contact details
Medicare PAC ID
8729314034
NPI enumeration date
March 27, 2018
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(408) 559-0666
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
38
Medical school graduation
2018

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Louis Cai practices at Retinal Diagnostic Center a Medical Corporation in Campbell, California

Louis Cai's primary practice is Retinal Diagnostic Center a Medical Corporation, at 3395 S Bascom Ave, Campbell, CA 95008 in Santa Clara County. The practice phone is (408) 559-0666.

  • Retinal Diagnostic Center a Medical Corporation
    3395 S Bascom Ave, Campbell, CA 95008 · Santa Clara CountyPhone(408) 559-0666

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Louis Cai is affiliated with 4 sites of care and 2 medical groups

Louis Cai's primary practice is Retinal Diagnostic Center a Medical Corporation in Campbell, California. Louis Cai is also affiliated with Good Samaritan Hospital. The medical group on file is University of Miami Health System. Dmand AI also links Louis Cai to 1 more physician office, 1 group practice or clinic and 1 medical group, each named with a free account.

See all 6 affiliations for Louis Cai

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Louis Cai's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Louis Cai practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Retinal Diagnostic Center a Medical CorporationAvailable with a free account
+3 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Louis Cai is one of 2,621 ophthalmologists in California

Ophthalmology is Louis Cai's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Louis Cai is board certified in ophthalmology by the American Board of Ophthalmology. Dmand AI has Louis Cai's licenses on file in 3 states: Florida, California and Pennsylvania.

Specialties and state licenses

  • Ophthalmology, FloridaPrimaryLicense ME154746 · 2022 to 2026 · taxonomy 207W00000X
  • Retina specialist (ophthalmology), CaliforniaLicense A194964 · 2024 to 2026 · taxonomy 207WX0107X
  • Pennsylvania license2019 to 2022

Ophthalmologists near Louis Cai

Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.

2,621ophthalmologists in California
9ophthalmologists in Campbell

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Louis Cai billed Medicare for 5,097 services in 2024

CMS data shows 5,097 Medicare services from Louis Cai across 12 procedure codes in 2024, for 382 Medicare patients. Medicare paid $207,924 for them.

Medicare services, 20245,097
Medicare patients382
Paid by Medicare$207,924
Procedure codes12

Louis Cai's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Drugs given in the office
2023: 02024: 4,131
Tests and treatments
2023: 02024: 677
Surgery
2023: 02024: 136
Office and hospital visits
2023: 762024: 13578%
Imaging
2023: 02024: 18

Where Louis Cai's Medicare services took place, 2024

  • In an office5,06899%
  • In a facility291%

Louis Cai compared with the California median for ophthalmologists, 2024

  • Louis Cai
  • California median
Medicare services
5,097vs 1,0794.7 times
Medicare patients
382vs 4219% below
Part D claims
159vs 61874% below

Medians across 2,568 ophthalmologists in California with Dmand AI profiles that report each measure.

Louis Cai's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Louis Cai treated 382 Medicare patients in 2024, average age 76

CMS counts 382 Medicare patients who saw Louis Cai in 2024. The largest group is 65 to 74, with 167 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 1.44, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Louis Cai's median patient age at 71, with 51% women.

Medicare patients, 2024382
Average age76
Average risk score1.44
Also on Medicaid35%

Louis Cai's Medicare patients by age, 2024

Louis Cai's Medicare patients by sex, 2024

  • Women22960%
  • Men15340%

Chronic conditions among Louis Cai's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis43%
  4. Diabetes42%
  5. Chronic kidney disease27%
  6. Ischemic heart disease25%
  7. Osteoporosis22%
  8. Heart failure16%

Share of Medicare patients with each condition. A patient can have several.

Louis Cai's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 71

Patient panel by sex, all payers

  • Women51%
  • Men48%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Louis Cai wrote 238 Medicare Part D claims in 2024

In 2024, Louis Cai wrote 238 Medicare Part D claims for 107 patients. 75% of them were for generic drugs. CMS names the drug for 159 of them, across 6 drugs with 11 or more claims each, at $2,931 in total drug cost. In 2023, CMS named 140 claims across 7 drugs.

Part D claims, 2024238
Drugs named by CMS6
Total drug cost$2,931
Part D patients107

Louis Cai's Part D claims by kind of drug, 2024

  • Generic178 claims75%
  • Brand-name60 claims25%

Louis Cai's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1402024: 15914%

Drugs named by CMS: 6 in 2024, 7 in 2023.

See all prescribing by Louis Cai

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Louis Cai scored 100 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Louis Cai for performance year 2024, reported as part of a group. Louis Cai accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Louis Cai's MIPS scores, performance year 2024

  • 100of 100Final score
  • 100of 100Quality
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Louis Cai has 24 publications on record

Dmand AI links 24 papers to Louis Cai, published from 2018 to 2025. 2021 was the busiest year, with 4. The most frequent topics are Retina, Artificial Intelligence and Ophthalmology. Louis Cai has published most often in Am J Ophthalmol. Louis Cai's most frequent co-authors are Nicolas A. Yannuzzi, MD, John William Hinkle, MD and Ajay Eapen Kuriyan, MD.

Papers24
Years published2018 to 2025

Louis Cai's papers by year, 2018 to 2025

Topics Louis Cai writes about most

  • Retina
  • Artificial Intelligence
  • Ophthalmology
  • Retinal Detachment
  • Vitrectomy
  • Tomography, Optical Coherence
  • Angiogenesis Inhibitors
  • COVID-19

Louis Cai's most frequent co-authors

Recent publications by Louis Cai

See all 24 publications and co-authors

See who Louis Cai researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Louis Cai works with, so you can find a warm path to the right ophthalmologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Louis Cai received $3,340 in industry payments from 2021 to 2025

CMS Open Payments shows 58 general payments to Louis Cai from 15 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $1,150.

General payments to Louis Cai by program year, 2021 to 2025

Companies that paid Louis Cai the most, 2021 to 2025

Share is of all general payments to this clinician.

See all payments to Louis Cai

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Louis Cai graduated from University of Miami, Miller School of Medicine

Louis Cai graduated from University of Miami, Miller School of Medicine in 2018.

  1. Medical schoolUniversity of Miami, Miller School of Medicine
  2. Board certified in ophthalmologyAmerican Board of Ophthalmology

Source: Dmand AI Professional Profile Data

Louis Cai accepts plans from 12 insurance carriers

Louis Cai is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Molina
  • Regence Health Plans
  • +4 more carriersWith a free account

Plan types Louis Cai accepts, by number of carriers

  1. Medicare9
  2. PPO7
  3. HMO6
  4. POS5
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Louis Cai's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Louis Cai

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Louis Cai's NPI number?

Louis Cai's NPI number is 1194220632. It was assigned on March 27, 2018, and it is active in the NPI Registry.

What does Louis Cai specialize in?

Louis Cai is an ophthalmologist in Campbell, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Louis Cai practice?

Louis Cai practices at 3395 S Bascom Ave, Campbell, CA 95008. Louis Cai's primary practice is Retinal Diagnostic Center a Medical Corporation in Campbell, California. Dmand AI also links Louis Cai to 1 physician office, 1 group practice or clinic and 1 medical group.

What is Louis Cai's office phone number?

The practice phone on file for Louis Cai is (408) 559-0666.

What is Louis Cai's medical license number?

Louis Cai holds Florida license ME154746, one of the licenses on file in 3 states.

Which states has Louis Cai been licensed in?

Dmand AI has state licenses on file for Louis Cai in Florida (2022 to 2026), California (2024 to 2026) and Pennsylvania (2019 to 2022).

Which hospitals is Louis Cai affiliated with?

Louis Cai is affiliated with Good Samaritan Hospital.

What medical group is Louis Cai part of?

Louis Cai is linked to University of Miami Health System. Dmand AI links Louis Cai to 1 more medical group.

Does Louis Cai accept Medicare?

Yes. CMS data shows Louis Cai billed Medicare for 5,097 services in 2024, and Louis Cai accepts Medicare assignment.

What is Louis Cai's MIPS score?

Louis Cai's MIPS final score for performance year 2024 is 100 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Louis Cai see?

CMS counts 382 Medicare patients who saw Louis Cai in 2024, with an average age of 76.

Is Louis Cai board certified?

Yes. Louis Cai is board certified in ophthalmology by the American Board of Ophthalmology.

What services does Louis Cai bill to Medicare?

In 2024, Louis Cai's most billed Medicare services were injected or infused drug (J2777), eye exam or test (92134) and eye exam or test (92014).

Where did Louis Cai go to medical school?

Louis Cai graduated from University of Miami, Miller School of Medicine in 2018.

What drugs does Louis Cai prescribe most?

In 2024 Medicare Part D data, Louis Cai's most prescribed drugs by claims were Prednisolone Acetate, Dorzolamide-Timolol and Neomycin-Polymyxin-Dexameth.

Has Louis Cai received payments from drug or device companies?

CMS Open Payments shows $3,340 in general payments to Louis Cai from 15 companies from 2021 to 2025. The largest total came from Alcon Laboratories Inc.

How long has Louis Cai been practicing?

Louis Cai graduated from medical school in 2018, 8 years ago.

Does Louis Cai do research?

Dmand AI links 24 publications to Louis Cai, published from 2018 to 2025.

Who does Louis Cai publish with?

Louis Cai's most frequent co-authors are Nicolas A. Yannuzzi, MD (6 shared papers), John William Hinkle, MD (5 shared papers) and Ajay Eapen Kuriyan, MD (5 shared papers).

What insurance does Louis Cai accept?

Louis Cai is in network with 12 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.

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