Sean S. Chung, M.D.
Internal Medicine Physician · Torrance, CA
Sean S. Chung, M.D. is an internal medicine physician with a practice address in Torrance, California, and NPI 1528160991, issued on Sep 5, 2006. Check the license (California A62212, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sean S. Chung
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A62212 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3300 Lomita Blvd., Torrance, CA 90505
- Phone
- (310) 214-0811
- Enumerated
- Sep 5, 2006
- Record last updated
- Dec 8, 2025
- Medicare enrollment
- Enrolled (PECOS I20040505001004); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Sean S. Chung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A62212Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average internal medicine physician in 2024
573 Medicare Part D claims for 128 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium60 claims
- Furosemide30 claims
- Pantoprazole Sodium28 claims
- Valsartan23 claims
- Carvedilol21 claims
- Rosuvastatin Calcium21 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 one group practice
- Healthcare Partners Affiliates Medical GroupTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sean S. Chung among 17,696 internal medicine physician records in California
Sean S. Chung, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1995 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
231 internal medicine physician records list a practice address in Torrance
They are 231 of the 8,901 NPPES records with a practice address in Torrance, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Torrance → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Tanya Arvan, MDTorrance, CA 905051104827666
- Madhu Chatwani, M.D.Torrance, CA 905051215993894
- James Ding, MDTorrance, CA 905051285614636
- Vadim Fanous, MDTorrance, CA 905051457329716
- Tyler Jung, M.D.Torrance, CA 905051194791772
- Chong Kim, MDTorrance, CA 905051528034485
- Janet Lee, D.O.Torrance, CA 905051205826633
- Thomas Lee, M.D.Torrance, CA 905051609842079
Common questions
What is Sean S. Chung, M.D.'s NPI number?
Sean S. Chung, M.D.'s National Provider Identifier (NPI) is 1528160991, issued on Sep 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sean S. Chung, M.D. located?
The NPPES record lists a practice address at 3300 Lomita Blvd., Torrance, CA, 90505. Phone: (310) 214-0811. Providers update this record themselves, so call before visiting.
How can I verify Sean S. Chung, M.D.'s license?
NPPES lists California license number A62212, 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 Sean S. Chung, M.D. prescribe under Medicare Part D?
In 2024, Sean S. Chung, M.D. had 573 Medicare Part D claims for 128 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.