Kay-Won Chang
Cardiovascular Disease Physician · Dublin, CA
Kay-Won Chang is a cardiovascular disease physician with a practice address in Dublin, California, and NPI 1205213410, issued on Apr 27, 2015. Check the license (California A144085, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kay-Won Chang
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- A144085 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4000 Dublin Blvd, Dublin, CA 94568
- Phone
- (510) 498-2178
- Enumerated
- Apr 27, 2015
- Record last updated
- Aug 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191111002470); accepts Medicare assignment
- Medical or professional school
- University Of Texas Medical School At Houston, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Also registered at 4000 Dublin Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jassimran Bainiwal, MDCardiovascular Disease Physician1225532633
- Sonja Bauer, PTPhysical Therapist1285084772
- Aditya Bhargava, M.D.Sleep Medicine (Internal Medicine) Physician1114938032
- Deval Bhatt, M.D.Endocrinology, Diabetes & Metabolism Physician1326385659
- Sai Bhuvanagiri, M.D.Endocrinology, Diabetes & Metabolism Physician1134652266
- Lisa Biga, NPObstetrics & Gynecology Nurse Practitioner1497107890
Verify Kay-Won Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A144085Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
1,279 Medicare Part D claims for 257 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Rosuvastatin Calcium372 claims
- Atorvastatin Calcium209 claims
- Eliquis158 claims
- Metoprolol Succinate76 claims
- Ezetimibe49 claims
- Entresto40 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 2 group practices
- Sutter Bay Medical FoundationMilpitas, CA
- Washington Township Hospital DistrictFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kay-Won Chang among 2,574 cardiovascular disease physician records in California
Kay-Won Chang is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 86% of them.
- NPI issued2015 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2015 · median 1999 among the 1,742 with a school on file
- Record last updated2021 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Dublin → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Jassimran Bainiwal, MDDublin, CA 945681225532633
- Raymond Chang, MDDublin, CA 945681477596831
- Amrita KrishnamurthyDublin, CA 945681649674268
- Krishna Moorthy, M.D.Pittsburg, CA 945651811933724
- Sanjay Ray, M.D.Pittsburg, CA 945651073538146
- Karthik Reddy, MDPittsburg, CA 945651881755429
- John Edelen, M.D.Orinda, CA 945631831183383
- Monica Divakaruni, MDSaint Helena, CA 945741205883972
Common questions
What is Kay-Won Chang's NPI number?
Kay-Won Chang's National Provider Identifier (NPI) is 1205213410, issued on Apr 27, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Kay-Won Chang located?
The NPPES record lists a practice address at 4000 Dublin Blvd, Dublin, CA, 94568. Phone: (510) 498-2178. Providers update this record themselves, so call before visiting.
How can I verify Kay-Won Chang's license?
NPPES lists California license number A144085, 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 Kay-Won Chang prescribe under Medicare Part D?
In 2024, Kay-Won Chang had 1,279 Medicare Part D claims for 257 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.