Diane Si-Si Wu, MD
Psychiatry Physician · Oakland, CA
Diane Si-Si Wu, MD is a psychiatry physician with a practice address in Oakland, California, and NPI 1033572599, issued on Apr 1, 2016. Check the license (California A150998, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diane Si-Si Wu
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A150998 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2940 Summit St Ste 2D, Oakland, CA 94609
- Phone
- (650) 600-9234
- Enumerated
- Apr 1, 2016
- Record last updated
- Jan 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20191002003208); may accept Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2016
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 2940 Summit St Ste 2D
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angie Angeles, LCSWClinical Social Worker1366647133
- Annissa BakerMental Health Counselor1346852175
- Kathleen Brady, LCSWClinical Social Worker1902121262
- Sean Carr, NBC-HWCHealth & Wellness Coach1073320404
- Susan Carroll, TRAINEE, MAMental Health Counselor1134642457
- Jerdine Clarke, PSY.D.Clinical Psychologist1982002846
Verify Diane Si-Si Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A150998Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
68% fewer Medicare Part D claims than the average psychiatry physician in 2024
323 Medicare Part D claims for 14 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Olanzapine28 claims
- Benztropine Mesylate26 claims
- Escitalopram Oxalate25 claims
- Lamotrigine23 claims
- Risperidone22 claims
- Aripiprazole16 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.
Bills Medicare through one group practice
- CaminarSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane Si-Si Wu among 8,673 psychiatry physician records in California
Diane Si-Si Wu, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 77% of them.
- NPI issued2016 · 77% of these records are older, 21% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2016 · median 2005 among the 3,295 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Oakland → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Yener Balan, M.D.Oakland, CA 946091740428911
- Floyd Brown, M.D.Oakland, CA 946091265412167
- Tony ChanOakland, CA 946091043639222
- Heather Clague, M.D.Oakland, CA 946091245287663
- Samar Fouda, MDOakland, CA 946091760060776
- Michael Hoaglin, MDOakland, CA 946091174824726
- Kushagra Nijhara, M.D.Oakland, CA 946091831689348
- Jesus Ramirez, MD, MSWOakland, CA 946091275518821
Common questions
What is Diane Si-Si Wu, MD's NPI number?
Diane Si-Si Wu, MD's National Provider Identifier (NPI) is 1033572599, issued on Apr 1, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Diane Si-Si Wu, MD located?
The NPPES record lists a practice address at 2940 Summit St Ste 2D, Oakland, CA, 94609. Phone: (650) 600-9234. Providers update this record themselves, so call before visiting.
How can I verify Diane Si-Si Wu, MD's license?
NPPES lists California license number A150998, 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 Si-Si Wu, MD prescribe under Medicare Part D?
In 2024, Diane Si-Si Wu, MD had 323 Medicare Part D claims for 14 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.