Zachary Bonzell, MD
Psychiatry Physician · San Francisco, CA
Zachary Bonzell, MD is a psychiatry physician with a practice address in San Francisco, California, and NPI 1669111720, issued on May 27, 2022. Check the license (California A201283, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Zachary Bonzell
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A201283 CA
Self-reported in NPPES; status is on the state search - Practice location
- 675 18TH St, San Francisco, CA 94143
- Phone
- (510) 333-1390
- Enumerated
- May 27, 2022
- Record last updated
- Nov 3, 2025
- Medicare enrollment
- Enrolled (PECOS I20260501001753); may accept Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2022
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 675 18TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Donna Appiah, MDStudent in an Organized Health Care Education/Training Program1528819216
- Jack Berry, MD, PHDPsychiatry Physician1720729239
- Micah BreigerPsychiatry Physician1417759721
- Anika Carter, LMSWClinical Social Worker1215401195
- Samuel ChenStudent in an Organized Health Care Education/Training Program1578401071
Verify Zachary Bonzell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A201283Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average psychiatry physician in 2024
250 Medicare Part D claims for 45 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Aripiprazole24 claims
- Quetiapine Fumarate21 claims
- Risperidone20 claims
- Citalopram Hbr16 claims
- Trazodone Hcl16 claims
- Benztropine Mesylate13 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: $402.21
7 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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.
Zachary Bonzell among 8,673 psychiatry physician records in California
Zachary Bonzell, 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 2022, is newer than 93% of them.
- NPI issued2022 · 93% of these records are older, 4% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2022 · median 2005 among the 3,295 with a school on file
- Record last updated2025 · 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).
763 psychiatry physician records list a practice address in San Francisco
They are 763 of the 38,143 NPPES records with a practice address in San Francisco, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Francisco → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Amy Berlin, MDSan Francisco, CA 941431730131939
- Stuart Eisendrath, MDSan Francisco, CA 941431982656187
- Ellen Haller, MDSan Francisco, CA 941431891747119
- Mardi Horowitz, MDSan Francisco, CA 941431740234038
- Descartes Li, MDSan Francisco, CA 941431962454157
- Jonathan Lichtmacher, M.D.San Francisco, CA 941431891717203
- Sudha Prathikanti, MDSan Francisco, CA 941431245297084
- Victor Reus, MDSan Francisco, CA 941431154372449
Common questions
What is Zachary Bonzell, MD's NPI number?
Zachary Bonzell, MD's National Provider Identifier (NPI) is 1669111720, issued on May 27, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Bonzell, MD located?
The NPPES record lists a practice address at 675 18TH St, San Francisco, CA, 94143. Phone: (510) 333-1390. Providers update this record themselves, so call before visiting.
How can I verify Zachary Bonzell, MD's license?
NPPES lists California license number A201283, 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 Zachary Bonzell, MD prescribe under Medicare Part D?
In 2024, Zachary Bonzell, MD had 250 Medicare Part D claims for 45 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.