David Nisenbaum, M.D.
Psychiatry Physician · Santa Ana, CA
David Nisenbaum, M.D. is a psychiatry physician with a practice address in Santa Ana, California, and NPI 1851659767, issued on Apr 27, 2012. Check the license (California A129897, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Nisenbaum
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A129897 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1200 N Main St Ste 200, Santa Ana, CA 92701
- Phone
- (714) 480-6767
- Enumerated
- Apr 27, 2012
- Record last updated
- Mar 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170504000712); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1200 N Main St Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marybel Buchler, LMFTMarriage & Family Therapist1124425822
- Thomas GarlandClinical Social Worker1538677190
- Linda HuangClinical Social Worker1922356195
- Dean MarquezSocial Worker1235799651
- Indirarani Prasad, M.D.Psychiatry Physician1114972213
Verify David Nisenbaum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A129897Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average psychiatry physician in 2024
196 Medicare Part D claims for 16 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Benztropine Mesylate41 claims
- Clozapine23 claims
- Olanzapine22 claims
- Risperidone22 claims
- Divalproex Sodium15 claims
- Aripiprazole14 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
- County OF OrangeMission Viejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Nisenbaum among 8,673 psychiatry physician records in California
David Nisenbaum, M.D. 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 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2012 · median 2005 among the 3,295 with a school on file
- Record last updated2021 · 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 Santa Ana → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Maria Castillo Flores, MDSanta Ana, CA 927011922055987
- Sara Chiu, M.D.Santa Ana, CA 927011639496730
- Weiming Chu, M.D.Santa Ana, CA 927011114189529
- Patricia De Marco Centeno, MDSanta Ana, CA 927011164676169
- Lester Goldstein, M.D.Santa Ana, CA 927011326001900
- Christopher Heitland, M.D.Santa Ana, CA 927011619089349
- Andrew Inglis, M.D.Santa Ana, CA 927011902860778
- Phillip Jun, M.D.Santa Ana, CA 927011346203668
Common questions
What is David Nisenbaum, M.D.'s NPI number?
David Nisenbaum, M.D.'s National Provider Identifier (NPI) is 1851659767, issued on Apr 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is David Nisenbaum, M.D. located?
The NPPES record lists a practice address at 1200 N Main St Ste 200, Santa Ana, CA, 92701. Phone: (714) 480-6767. Providers update this record themselves, so call before visiting.
How can I verify David Nisenbaum, M.D.'s license?
NPPES lists California license number A129897, 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 David Nisenbaum, M.D. prescribe under Medicare Part D?
In 2024, David Nisenbaum, M.D. had 196 Medicare Part D claims for 16 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.