Sook Claire Chung, M.D.
Internal Medicine Physician · Harbor City, CA
Sook Claire Chung, M.D. is an internal medicine physician with a practice address in Harbor City, California, and NPI 1306824487, issued on Jan 9, 2006. Check the license (California A98857, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sook Claire Chung
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A98857 CA
Self-reported in NPPES; status is on the state search - Practice location
- 25825 Vermont Ave, Harbor City, CA 90710
- Phone
- (310) 517-2298
- Enumerated
- Jan 9, 2006
- Record last updated
- Dec 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 30205368 NH
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 25825 Vermont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sook Claire Chung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98857Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
349 Medicare Part D claims for 187 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Amlodipine Besylate19 claims
- Oxycodone Hcl19 claims
- Prednisone17 claims
- Losartan Potassium16 claims
- Atorvastatin Calcium15 claims
- Albuterol Sulfate Hfa12 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.
Sook Claire Chung among 17,696 internal medicine physician records in California
Sook Claire 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 fileNo · 63% of these records are
- Record last updated2021 · 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).
64 internal medicine physician records list a practice address in Harbor City
They are 64 of the 958 NPPES records with a practice address in Harbor City, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Harbor City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rafael AmaroHarbor City, CA 907101750475661
- Jennifer Armstrong, MDHarbor City, CA 907101578567178
- Margaret David, MDHarbor City, CA 907101336216209
- William Fleury, MDHarbor City, CA 907101912078825
- Roger Hartman, MDHarbor City, CA 907101083781942
- Ryokei Imai, MDHarbor City, CA 907101003975608
- Veassa Johnson, M.DHarbor City, CA 907101346308756
- Roger Ong, MDHarbor City, CA 907101881761799
Common questions
What is Sook Claire Chung, M.D.'s NPI number?
Sook Claire Chung, M.D.'s National Provider Identifier (NPI) is 1306824487, issued on Jan 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sook Claire Chung, M.D. located?
The NPPES record lists a practice address at 25825 Vermont Ave, Harbor City, CA, 90710. Phone: (310) 517-2298. Providers update this record themselves, so call before visiting.
How can I verify Sook Claire Chung, M.D.'s license?
NPPES lists California license number A98857, 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 Sook Claire Chung, M.D. prescribe under Medicare Part D?
In 2024, Sook Claire Chung, M.D. had 349 Medicare Part D claims for 187 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.