John K. Chan, MD
Gynecologic Oncology Physician · San Francisco, CA
John K. Chan, MD is a gynecologic oncology physician with a practice address in San Francisco, California, and NPI 1962596551, issued on Oct 3, 2006. Check the license (California A61661, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John K. Chan
- Credential
- MD
- Primary taxonomy
- Gynecologic Oncology Physician 207VX0201X
- License number
- A61661 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Van Ness Ave FL 4, San Francisco, CA 94109
- Phone
- (415) 600-0930
- Enumerated
- Oct 3, 2006
- Record last updated
- May 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20070328000311); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1100 Van Ness Ave FL 4
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gabriella Brown, MS, LCGCGenetic Counselor (M.S.)1326026873
- Anna Buchsbaum, M.D.Obstetrics & Gynecology Physician1689806317
- Elena Burbridge, RD, CDERegistered Dietitian1841804259
- Lejla Delic, M.D.Gynecologic Oncology Physician1063615185
- Jessica Fisher, FNP-CFamily Nurse Practitioner1326875550
- Eva Gabor-Fourcade, CGCGenetic Counselor (M.S.)1053909622
Verify John K. Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61661Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
45% fewer Medicare Part D claims than the average gynecologic oncology physician in 2024
108 Medicare Part D claims for 79 beneficiaries, against an average of 195 among the 1,475 providers of this specialty who prescribed in Part D. 61 claims were for opioids.
Most prescribed
- Acetaminophen-Codeine48 claims
- Hydrocodone-Acetaminophen12 claims
- Letrozole11 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: $336,564.78
188 payments; by number, the most common kind was compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program; the largest payer was GlaxoSmithKline, LLC. The 1,199 providers of this specialty with any payment received $6,387.20 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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gynecologic Oncology Physician providers in California
There are 176 gynecologic oncology physician records in California.
Other gynecologic oncology physician records in California
- Lisa Abaid, M.D., M.P.H.Newport Beach, CA1295943132
- Alireza Abidi, M.D.Sacramento, CA1215919477
- Federico Alva, M.D.Northridge, CA1649200379
- Edwin Alvarez, M.D.Sacramento, CA1710197330
- Kristen Anderson, M.D., PH.D.Moreno Valley, CA1447575568
- Melanie Arora, M.D.Apple Valley, CA1578889283
- Fikret Atamdede, M.D.Torrance, CA1578502480
- Samuel Ballon, M.D.Los Gatos, CA1760408173
- Alice Barr, MDSacramento, CA1982109286
- Lisa Bean, M.D.Calexico, CA1760782817
Common questions
What is John K. Chan, MD's NPI number?
John K. Chan, MD's National Provider Identifier (NPI) is 1962596551, issued on Oct 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John K. Chan, MD located?
The NPPES record lists a practice address at 1100 Van Ness Ave FL 4, San Francisco, CA, 94109. Phone: (415) 600-0930. Providers update this record themselves, so call before visiting.
How can I verify John K. Chan, MD's license?
NPPES lists California license number A61661, 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 John K. Chan, MD prescribe under Medicare Part D?
In 2024, John K. Chan, MD had 108 Medicare Part D claims for 79 beneficiaries; the average among gynecologic oncology physician prescribers was 195. 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.