Diane Kwan, M.D.
Surgery Physician · Oakland, CA
Diane Kwan, M.D. is a surgery physician with a practice address in Oakland, California, and NPI 1992913859, issued on May 21, 2007. Check the license (California A117525, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diane Kwan
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- A117525 CA
PGY1 LA
Self-reported in NPPES; status is on the state search - Practice location
- 365 Hawthorne Ave, Oakland, CA 94609
- Phone
- (510) 465-5523
- Enumerated
- May 21, 2007
- Record last updated
- Feb 22, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (510) 832-6061
- Medicare enrollment
- Enrolled (PECOS I20120326000616); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Medicine And Surgery, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 365 Hawthorne Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Anderson, MDCardiovascular Disease Physician1780613380
- Miranda Bassilios, PA CPhysician Assistant1609831114
- Edward Blumenstock, MDObstetrics & Gynecology Physician1235156738
- Gregory Broderick-Villa, MDSurgery Physician1376571562
- John Chiu, MDInterventional Cardiology Physician1629007000
- Stephen Etheredge, MDVascular Surgery Physician1770694101
Verify Diane Kwan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A117525Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average surgery physician in 2024
93 Medicare Part D claims for 36 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 15 claims were for opioids.
Most prescribed
- Pantoprazole Sodium32 claims
- Ondansetron Odt21 claims
- Oxycodone Hcl13 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: $11,057.50
15 payments; by number, the most common kind was food and beverage; the largest payer was Ethicon Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Epic CareWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane Kwan among 3,118 surgery physician records in California
Diane Kwan, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 45% of them.
- NPI issued2007 · 45% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2006 · median 2003 among the 1,901 with a school on file
- Record last updated2012 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Oakland → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- David Blumberg, MDOakland, CA 946091295890440
- Gregory Broderick-Villa, MDOakland, CA 946091376571562
- Kenneth Chang, M.D.Oakland, CA 946091952544355
- Jon Greif, D.O.Oakland, CA 946091306958095
- Rupert Horoupian, MDOakland, CA 946091184686156
- Collin Mbanugo, M.D.Oakland, CA 946091134271471
- Oleg Merzlikin, MDOakland, CA 946091568760643
- Bruce Moorstein, MDOakland, CA 946091457359515
Common questions
What is Diane Kwan, M.D.'s NPI number?
Diane Kwan, M.D.'s National Provider Identifier (NPI) is 1992913859, issued on May 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Diane Kwan, M.D. located?
The NPPES record lists a practice address at 365 Hawthorne Ave, Oakland, CA, 94609. Phone: (510) 465-5523. Providers update this record themselves, so call before visiting.
How can I verify Diane Kwan, M.D.'s license?
NPPES lists California license number A117525, 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 Diane Kwan, M.D. prescribe under Medicare Part D?
In 2024, Diane Kwan, M.D. had 93 Medicare Part D claims for 36 beneficiaries; the average among surgery physician prescribers was 147. 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.