Kwan Sian Chen, MD
Interventional Cardiology Physician · Fremont, CA
Kwan Sian Chen, MD is an interventional cardiology physician with a practice address in Fremont, California, and NPI 1619928025, issued on May 12, 2006. Check the license (California A045567, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kwan Sian Chen
- Credential
- MD
- Primary taxonomy
- Interventional Cardiology Physician 207RI0011X
- License number
- A045567 CA
Self-reported in NPPES; status is on the state search - Practice location
- 39229 Liberty St, Fremont, CA 94538
- Phone
- (510) 494-8316
- Enumerated
- May 12, 2006
- Record last updated
- Apr 22, 2022
- Fax
- (510) 494-8314
- Medicaid ID
- 00A455671 CA
- Medicare enrollment
- Enrolled (PECOS I20040624000634); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest interventional cardiology physician records → All 632 in California → Look up another NPI →
Verify Kwan Sian Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A045567Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average interventional cardiology physician in 2024
7,817 Medicare Part D claims for 645 beneficiaries, against an average of 3,179 among the 6,605 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 17 claims were for opioids.
Most prescribed
- Atorvastatin Calcium564 claims
- Amlodipine Besylate338 claims
- Clopidogrel315 claims
- Eliquis293 claims
- Metoprolol Tartrate281 claims
- Metoprolol Succinate247 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 MIPS final score for 2023 (Medicare payment program): 98.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,324.15
76 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 6,394 providers of this specialty with any payment received $7,062.29 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
- Washington Township Hospital DistrictFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kwan Sian Chen among 632 interventional cardiology physician records in California
Kwan Sian Chen, MD is one of 632 interventional cardiology physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 52% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated1988 · median 2001 among the 526 with a school on file
- Record last updated2022 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0011X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Interventional Cardiology Physician providers in California
There are 632 interventional cardiology physician records in California.
All 632 in California → Every provider in Fremont → Interventional Cardiology Physician nationwide →
The 8 interventional cardiology physician records with the nearest ZIP codes
- Steven Degalan, M.DFremont, CA 945381508849860
- Terence Lin, MDFremont, CA 945381952385403
- Nowwar Mustafa, MDFremont, CA 945381952433690
- Vipul Gupta, MBBSAntioch, CA 945311376781575
- Agustin Argenal, M.D.Concord, CA 945201629045372
- Wayland Lim, M.D.Concord, CA 945201134311905
- Paul McWhirter, M.D.Concord, CA 945201609843366
- Howard Min, M.D.Concord, CA 945201972585859
Common questions
What is Kwan Sian Chen, MD's NPI number?
Kwan Sian Chen, MD's National Provider Identifier (NPI) is 1619928025, issued on May 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kwan Sian Chen, MD located?
The NPPES record lists a practice address at 39229 Liberty St, Fremont, CA, 94538. Phone: (510) 494-8316. Providers update this record themselves, so call before visiting.
How can I verify Kwan Sian Chen, MD's license?
NPPES lists California license number A045567, 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 Kwan Sian Chen, MD prescribe under Medicare Part D?
In 2024, Kwan Sian Chen, MD had 7,817 Medicare Part D claims for 645 beneficiaries; the average among interventional cardiology physician prescribers was 3,179. Part D covers Medicare prescriptions only.
What is Kwan Sian Chen, MD's MIPS final score?
The 2023 MIPS final score is 98.5 of 100. 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.