Winston Chung, MD
Internal Medicine Physician · Los Alamitos, CA
Winston Chung, MD is an internal medicine physician with a practice address in Los Alamitos, California, and NPI 1851322085, issued on Jul 5, 2006. Check the license (California G79052, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Winston Chung
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G79052 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3801 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 594-9546
- Enumerated
- Jul 5, 2006
- Entity
- Type 1 · individual
Also registered at 3801 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Winston Chung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79052Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3.1 times the Medicare Part D claims of the average internal medicine physician in 2024
9,976 Medicare Part D claims for 681 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 148 claims were for opioids.
Most prescribed
- Atorvastatin Calcium679 claims
- Amlodipine Besylate644 claims
- Levothyroxine Sodium451 claims
- Losartan Potassium393 claims
- Eliquis310 claims
- Metoprolol Succinate280 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: $99.29
5 payments, mostly food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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.
One hospital or facility affiliation
- Prohealth Partners, A Medical GroupLos Alamitos, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
40 internal medicine physician records list a Los Alamitos practice address
They are 40 of the 1,035 NPPES records with a Los Alamitos practice address, and 17,696 internal medicine physician records in California.
All 40 in Los Alamitos → All 17,696 in California → Every provider in Los Alamitos →
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Winston Chung, MD's NPI number?
Winston Chung, MD's National Provider Identifier (NPI) is 1851322085, issued on Jul 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Winston Chung, MD located?
The NPPES record lists a practice address at 3801 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 594-9546. Providers update this record themselves, so call before visiting.
How can I verify Winston Chung, MD's license?
NPPES lists California license number G79052, 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 Winston Chung, MD prescribe under Medicare Part D?
In 2024, Winston Chung, MD had 9,976 Medicare Part D claims for 681 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), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.