Kenneth Chang, MD
Internal Medicine Physician · San Francisco, CA
Kenneth Chang, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1609832724, issued on Apr 26, 2006. Check the license (California A55424, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kenneth Chang
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A55424 CA
Self-reported in NPPES; status is on the state search - Practice location
- 728 Pacific Ave, San Francisco, CA 94133
- Phone
- (415) 421-4525
- Enumerated
- Apr 26, 2006
- Entity
- Type 1 · individual
Also registered at 728 Pacific Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Edward Chan, M.D.Internal Medicine Physician1033155213
- Celeste Chang, MD, FACPNephrology Physician1245633825
- Jennifer Chin, MS, OTR/LOccupational Therapist1174112312
- Robert Choy, DPMPodiatrist1831148618
- Paul Chu, M.D.Family Medicine Physician1215965355
- William Chung, M.D.Internal Medicine Physician1831204486
Verify Kenneth Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A55424Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
7.4 times the Medicare Part D claims of the average internal medicine physician in 2024
20,545 Medicare Part D claims for 1,488 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 30 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,910 claims
- Amlodipine Besylate1,506 claims
- Losartan Potassium1,318 claims
- Metformin Hcl955 claims
- Triamcinolone Acetonide629 claims
- Omeprazole591 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: $82.70
4 payments, mostly food and beverage; the largest payer was Novo Nordisk Inc. The 65,274 providers of this specialty with any payment received $2,536.66 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.
1,593 internal medicine physician records list a San Francisco practice address
They are 1,593 of the 38,143 NPPES records with a San Francisco practice address, and 20,403 internal medicine physician records in California.
All 1,593 in San Francisco → All 20,403 in California → Every provider in San Francisco →
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 Kenneth Chang, MD's NPI number?
Kenneth Chang, MD's National Provider Identifier (NPI) is 1609832724, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kenneth Chang, MD located?
The NPPES record lists a practice address at 728 Pacific Ave, San Francisco, CA, 94133. Phone: (415) 421-4525. Providers update this record themselves, so call before visiting.
How can I verify Kenneth Chang, MD's license?
NPPES lists California license number A55424, 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 Kenneth Chang, MD prescribe under Medicare Part D?
In 2024, Kenneth Chang, MD had 20,545 Medicare Part D claims for 1,488 beneficiaries; the average among internal medicine physician prescribers was 2,785. 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.