Changyow Kwan

  • Monterey Park, CA
  • Ophthalmologist
NPI1588110423PAC ID2567831332
Medicare patients, 2024
36
Part D claims, 2024
602
Publications
13
Industry payments
$1,041
Affiliated sites
2
Practice address
120 W Hellman Ave Suite 302 Suite 302, Monterey Park, CA 91754-1209
Practice phone
Call (626) 262-2082
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Optic Eye Care

Eye care practice · Monterey Park, California

See all 4 affiliations

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Changyow Kwan is an ophthalmologist in Monterey Park, California

Changyow Kwan practices at Optic Eye Care in Monterey Park, California.

Changyow Kwan's NPI, 1588110423, was assigned on August 31, 2016. Changyow Kwan graduated from Feinberg School of Medicine in 2020. Changyow Kwan's California license number on file is A187362.

NPI and contact details
Medicare PAC ID
2567831332
NPI enumeration date
August 31, 2016
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(626) 262-2082
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
32
Medical school graduation
2020

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

Changyow Kwan practices at Optic Eye Care in Monterey Park, California

Changyow Kwan's primary practice is Optic Eye Care, at 120 W Hellman Ave Suite 302 Suite 302, Monterey Park, CA 91754-1209. The practice phone is (626) 262-2082.

  • Optic Eye Care
    120 W Hellman Ave Suite 302 Suite 302, Monterey Park, CA 91754-1209Phone(626) 262-2082

Source: Dmand AI Affiliation Data

Changyow Kwan is affiliated with 2 sites of care and 2 medical groups

Changyow Kwan's primary practice is Optic Eye Care in Monterey Park, California. Dmand AI also links Changyow Kwan to 2 medical groups and 1 group practice or clinic, each named with a free account.

Optic Eye CareEye care practice · Monterey Park, CaliforniaPrimary
2 medical groupsNames with a free account1 group practice or clinicName with a free account
See all 4 affiliations for Changyow Kwan

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Changyow Kwan's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Changyow Kwan practices, 2 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Optic Eye CareAvailable with a free account
+1 more site and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Changyow Kwan is one of 2,621 ophthalmologists in California

Ophthalmology is Changyow Kwan's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dmand AI has Changyow Kwan's licenses on file in 2 states: California and Illinois.

Specialties and state licenses

  • Ophthalmology, CaliforniaPrimaryLicense A187362 · 2023 to 2025 · taxonomy 207W00000X
  • Illinois license2020 to 2021

Ophthalmologists near Changyow Kwan

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

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

Changyow Kwan treated 36 Medicare patients in 2024, average age 76

CMS counts 36 Medicare patients who saw Changyow Kwan in 2024. The largest group is 75 to 84, with 19 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 39% are also on Medicaid. Their average risk score is 1.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Changyow Kwan's median patient age at 69, with 53% women.

Medicare patients, 202436
Average age76
Average risk score1.86
Also on Medicaid39%

Changyow Kwan's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Changyow Kwan's Medicare patients by sex, 2024

  • Women1542%
  • Men2158%

Chronic conditions among Changyow Kwan's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis36%
  4. Diabetes36%
  5. Ischemic heart disease33%
  6. Chronic kidney disease31%

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

Changyow Kwan's patients across all payers

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

Patient panel by age, all payers

Median age 69

Patient panel by sex, all payers

  • Women53%
  • Men46%

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

Changyow Kwan wrote 602 Medicare Part D claims in 2024

In 2024, Changyow Kwan wrote 602 Medicare Part D claims for 291 patients. 53% of them were for generic drugs. CMS names the drug for 471 of them, across 14 drugs with 11 or more claims each, at $84,890 in total drug cost. In 2023, CMS named 23 claims across 2 drugs.

Part D claims, 2024602
Drugs named by CMS14
Total drug cost$84,890
Part D patients291

Changyow Kwan's Part D claims by kind of drug, 2024

  • Generic322 claims53%
  • Brand-name280 claims47%

Changyow Kwan'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: 232024: 4711948%

Drugs named by CMS: 14 in 2024, 2 in 2023.

See all prescribing by Changyow Kwan

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

Changyow Kwan ranks in the 60th percentile for cataract surgery in Medicare

Changyow Kwan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 42 procedures of cataract surgery by Changyow Kwan, more than 60% of the clinicians it reports for that procedure.

Accepts Medicare assignment
Yes

Where Changyow Kwan ranks in Medicare procedure volume

Cataract surgery
60th percentile42 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Changyow Kwan has 13 publications on record

Dmand AI links 13 papers to Changyow Kwan, published from 2018 to 2024. 2020 was the busiest year, with 3. The most frequent topics are Tomography, Optical Coherence, Diabetic Retinopathy and Fluorescein Angiography. Changyow Kwan has published most often in Clin Ophthalmol. Changyow Kwan's most frequent co-authors are Amani Fawzi, MD, Austin Roy Fox, MD and Kevin Mitsutoshi Gustafson, MD.

Papers13
Years published2018 to 2024

Changyow Kwan's papers by year, 2018 to 2024

Topics Changyow Kwan writes about most

  • Tomography, Optical Coherence
  • Diabetic Retinopathy
  • Fluorescein Angiography
  • Retinal Vessels
  • Adaptation, Ocular
  • Dark Adaptation
  • Eye
  • Healthy Volunteers

Changyow Kwan's most frequent co-authors

Recent publications by Changyow Kwan

See all 13 publications and co-authors

See who Changyow Kwan researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Changyow Kwan 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

Changyow Kwan received $1,041 in industry payments from 2022 to 2024

CMS Open Payments shows 20 general payments to Changyow Kwan from 4 drug and device companies from 2022 to 2024. Food and beverage make up the largest share, 99% of the total. Alcon Laboratories Inc paid the most, $802.

General payments to Changyow Kwan by program year, 2022 to 2024

General payments to Changyow Kwan by kind, 2022 to 2024

$1Kin total
  • Food and beverage$1,02799%
  • Travel and lodging$141%

Companies that paid Changyow Kwan the most, 2022 to 2024

Share is of all general payments to this clinician.

See all payments to Changyow Kwan

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

Changyow Kwan graduated from Feinberg School of Medicine

Changyow Kwan graduated from Feinberg School of Medicine in 2020.

  1. Medical schoolFeinberg School of Medicine

Source: Dmand AI Professional Profile Data

Changyow Kwan accepts plans from 14 insurance carriers

Changyow Kwan is in network with 14 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • Elevance
  • HCSC
  • Aetna
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Alliant Health Plans
  • +6 more carriersWith a free account

Plan types Changyow Kwan accepts, by number of carriers

  1. PPO8
  2. HMO6
  3. Medicare6
  4. POS4
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Changyow Kwan'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 phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
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)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 Changyow Kwan

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

What is Changyow Kwan's NPI number?

Changyow Kwan's NPI number is 1588110423. It was assigned on August 31, 2016, and it is active in the NPI Registry.

What does Changyow Kwan specialize in?

Changyow Kwan is an ophthalmologist in Monterey Park, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Changyow Kwan practice?

Changyow Kwan practices at 120 W Hellman Ave Suite 302 Suite 302, Monterey Park, CA 91754-1209. Changyow Kwan's primary practice is Optic Eye Care in Monterey Park, California. Dmand AI also links Changyow Kwan to 2 medical groups and 1 group practice or clinic.

What is Changyow Kwan's office phone number?

The practice phone on file for Changyow Kwan is (626) 262-2082.

What is Changyow Kwan's medical license number?

Changyow Kwan's California license number on file is A187362, one of the licenses on file in 2 states.

Which states has Changyow Kwan been licensed in?

Dmand AI has state licenses on file for Changyow Kwan in California (2023 to 2025) and Illinois (2020 to 2021).

Does Changyow Kwan accept Medicare?

Yes. CMS lists Changyow Kwan as accepting Medicare assignment.

How many Medicare patients does Changyow Kwan see?

CMS counts 36 Medicare patients who saw Changyow Kwan in 2024, with an average age of 76.

Where did Changyow Kwan go to medical school?

Changyow Kwan graduated from Feinberg School of Medicine in 2020.

What drugs does Changyow Kwan prescribe most?

In 2024 Medicare Part D data, Changyow Kwan's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Brimonidine Tartrate.

Show 5 more questionsShow fewer questions

Has Changyow Kwan received payments from drug or device companies?

CMS Open Payments shows $1,041 in general payments to Changyow Kwan from 4 companies from 2022 to 2024. The largest total came from Alcon Laboratories Inc.

How long has Changyow Kwan been practicing?

Changyow Kwan graduated from medical school in 2020, 6 years ago.

Does Changyow Kwan do research?

Dmand AI links 13 publications to Changyow Kwan, published from 2018 to 2024.

Who does Changyow Kwan publish with?

Changyow Kwan's most frequent co-authors are Amani Fawzi, MD (5 shared papers), Austin Roy Fox, MD (2 shared papers) and Kevin Mitsutoshi Gustafson, MD (2 shared papers).

What insurance does Changyow Kwan accept?

Changyow Kwan is in network with 14 carriers, including Blue Cross Blue Shield of Michigan, United Healthcare and Elevance. PPO plans come from the most carriers, 8. Check the plan with the practice before a visit.

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