Gerardo Javier Zambrano, MD
Psychiatry Physician · Menlo Park, CA
Gerardo Javier Zambrano, MD is a psychiatry physician with a practice address in Menlo Park, California, and NPI 1730349457, issued on Jun 16, 2008. Check the license (California A109402, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gerardo Javier Zambrano
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A109402 CA
Self-reported in NPPES; status is on the state search - Practice location
- 795 Willow RD, Menlo Park, CA 94025
- Phone
- (650) 493-5000
- Enumerated
- Jun 16, 2008
- Record last updated
- Jul 22, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110411000558); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2008
- 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 795 Willow RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abigail Abar-Calica, N.P.Gerontology Nurse Practitioner1639330269
- Kristin AbrahamsSpeech-Language Pathologist1912293325
- Andenika Adams, PHARMDPharmacist1467553685
- Angileny Aloba, LVN, RRWAddiction (Substance Use Disorder) Counselor1104232891
- Jennifer Alvarez, PHDPsychologist1356543607
- Susan Anderson, PH.D.Psychologist1588607261
Verify Gerardo Javier Zambrano in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A109402Check 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% fewer Medicare Part D claims than the average psychiatry physician in 2024
971 Medicare Part D claims for 36 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Risperidone99 claims
- Benztropine Mesylate71 claims
- Clonazepam63 claims
- Haloperidol61 claims
- Lorazepam50 claims
- Olanzapine Odt48 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
- Momentum For HealthSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gerardo Javier Zambrano among 8,673 psychiatry physician records in California
Gerardo Javier Zambrano, 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 2008, is newer than 52% of them.
- NPI issued2008 · 52% of these records are older, 43% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2008 · median 2005 among the 3,295 with a school on file
- Record last updated2014 · 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).
60 psychiatry physician records list a practice address in Menlo Park
They are 60 of the 1,265 NPPES records with a practice address in Menlo Park, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Menlo Park → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Carol Achtman, M.D.Menlo Park, CA 940251881610574
- Mary English, RN MS CNSMenlo Park, CA 940251073627923
- Grant Halischuk, MDMenlo Park, CA 940251356434922
- Maya Kopell, M.D.Menlo Park, CA 940251376569905
- Tina Lee, M.D.Menlo Park, CA 940251407895287
- Martha Losch, M.D.Menlo Park, CA 940251598791907
- Cecylia Nowakowska, M.D., PH.D.Menlo Park, CA 940251396762225
- Manasi Rana, MDMenlo Park, CA 940251871604108
Common questions
What is Gerardo Javier Zambrano, MD's NPI number?
Gerardo Javier Zambrano, MD's National Provider Identifier (NPI) is 1730349457, issued on Jun 16, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Gerardo Javier Zambrano, MD located?
The NPPES record lists a practice address at 795 Willow RD, Menlo Park, CA, 94025. Phone: (650) 493-5000. Providers update this record themselves, so call before visiting.
How can I verify Gerardo Javier Zambrano, MD's license?
NPPES lists California license number A109402, 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 Gerardo Javier Zambrano, MD prescribe under Medicare Part D?
In 2024, Gerardo Javier Zambrano, MD had 971 Medicare Part D claims for 36 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.