NPPES file of Aug 9, 2026

Sung Hwan Chun, MD

Clinical Cardiac Electrophysiology Physician · Stanford, CA

Sung Hwan Chun, MD is a clinical cardiac electrophysiology physician with a practice address in Stanford, California, and NPI 1477640381, issued on Oct 10, 2006. Check the license (California G69787, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1477640381
Name
Sung Hwan Chun
Credential
MD
Primary taxonomy
Clinical Cardiac Electrophysiology Physician 207RC0001X
License number
G69787 CA
Self-reported in NPPES; status is on the state search
Practice location
300 Pasteur Dr, Stanford, CA 94305
Phone
(650) 723-4000
Enumerated
Oct 10, 2006
Record last updated
Apr 18, 2024
Medicare enrollment
Enrolled (PECOS I20040511001557); accepts Medicare assignment
Medical or professional school
George Washington University School Of Medicine, 1989
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 300 Pasteur Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Cooper Aakhus, MDEmergency Medicine Physician1194351007
  2. Oliver Aalami, M.D.Vascular Surgery Physician1225229024
  3. Alistair Aaronson, MDInternal Medicine Physician1457628760
  4. Sumaira Aasi, MDMOHS-Micrographic Surgery Physician1780675181
  5. Fahim Abbasi, M.D.Internal Medicine Physician1841484037
  6. Mohamad Abbass, MDNeurological Surgery Physician1679492151

Verify Sung Hwan Chun in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G69787
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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38% more Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024

2,363 Medicare Part D claims for 408 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.

  1. Sung Chun2,363
  2. Specialty average1,710

Most prescribed

  1. Eliquis628 claims
  2. Metoprolol Succinate492 claims
  3. Xarelto186 claims
  4. Amiodarone Hcl138 claims
  5. Flecainide Acetate128 claims
  6. Diltiazem 24hr Er (Cd)110 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.

Industry payments in 2024: $34.40

1 payment: food and beverage; the largest payer was Biosense Webster, Inc. The 3,167 providers of this specialty with any payment received $10,651.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Sung Chun$34
  2. Specialty average$10,651

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

  1. Sutter Bay Medical FoundationPalo Alto, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sung Hwan Chun among 304 clinical cardiac electrophysiology physician records in California

Sung Hwan Chun, MD is one of 304 clinical cardiac electrophysiology physician records with a practice address in California. 93% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 58% newer
  • In a Medicare fileYes · 93% of these records are
  • In the CMS Doctors and Clinicians fileYes · 87% of these records are
  • Graduated1989 · median 2002 among the 261 with a school on file
  • Record last updated2024 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Cardiac Electrophysiology Physician providers in California

There are 304 clinical cardiac electrophysiology physician records in California.

The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes

  1. Nitish Badhwar, MDStanford, CA 943051619928892
  2. Tina Baykaner, MDStanford, CA 943051760786818
  3. John Evans, MDStanford, CA 943051376620294
  4. Roy John, MDStanford, CA 943051417993528
  5. Byron Lee, MDPalo Alto, CA 943051700835584
  6. Sanjiv Narayan, MDStanford, CA 943051649215492
  7. Girish Narayan, MDStanford, CA 943051912061615
  8. Marco Perez, MDStanford, CA 943051740296607

Common questions

What is Sung Hwan Chun, MD's NPI number?

Sung Hwan Chun, MD's National Provider Identifier (NPI) is 1477640381, issued on Oct 10, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Sung Hwan Chun, MD located?

The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.

How can I verify Sung Hwan Chun, MD's license?

NPPES lists California license number G69787, 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 Sung Hwan Chun, MD prescribe under Medicare Part D?

In 2024, Sung Hwan Chun, MD had 2,363 Medicare Part D claims for 408 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. 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.