Onsi Habeeb El-Zayat, M.D.
Psychiatry Physician · Anaheim, CA
Onsi Habeeb El-Zayat, M.D. is a psychiatry physician with a practice address in Anaheim, California, and NPI 1033205554, issued on Oct 4, 2006. Check the license (California A43498, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Onsi Habeeb El-Zayat
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A43498 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1020 S Anaheim Blvd Ste 214, Anaheim, CA 92805
- Phone
- (714) 776-3371
- Enumerated
- Oct 4, 2006
- Record last updated
- Mar 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (714) 776-0230
- Medicare enrollment
- Enrolled (PECOS I20090911000716); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1020 S Anaheim Blvd Ste 214
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jose Gamboa, MDChild & Adolescent Psychiatry Physician1275615718
Verify Onsi Habeeb El-Zayat in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A43498Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average psychiatry physician in 2024
399 Medicare Part D claims for 18 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Olanzapine74 claims
- Divalproex Sodium Er45 claims
- Quetiapine Fumarate39 claims
- Lithium Carbonate25 claims
- Clozapine23 claims
- Risperidone22 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: $124.25
1 payment: food and beverage; the largest payer was Teva Pharmaceuticals USA, 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.
Onsi Habeeb El-Zayat among 8,673 psychiatry physician records in California
Onsi Habeeb El-Zayat, 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1976 · median 2005 among the 3,295 with a school on file
- Record last updated2008 · 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 Anaheim → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jamie Fortman, MDAnaheim, CA 928051801415070
- Peter Hung, MDAnaheim, CA 928051093027724
- Steven Johnson, M.D.Anaheim, CA 928051730117516
- Pravin Kansagra Md, M.D.Anaheim, CA 928051205861614
- Chung-Lim Kim, M.D.Anaheim, CA 928051033361720
- Brent Louie, MDAnaheim, CA 928051245897990
- Sheela Masifi, MDAnaheim, CA 928051124401765
- Ciprian Spenser, M.D.Anaheim, CA 928051386869493
Common questions
What is Onsi Habeeb El-Zayat, M.D.'s NPI number?
Onsi Habeeb El-Zayat, M.D.'s National Provider Identifier (NPI) is 1033205554, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Onsi Habeeb El-Zayat, M.D. located?
The NPPES record lists a practice address at 1020 S Anaheim Blvd Ste 214, Anaheim, CA, 92805. Phone: (714) 776-3371. Providers update this record themselves, so call before visiting.
How can I verify Onsi Habeeb El-Zayat, M.D.'s license?
NPPES lists California license number A43498, 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 Onsi Habeeb El-Zayat, M.D. prescribe under Medicare Part D?
In 2024, Onsi Habeeb El-Zayat, M.D. had 399 Medicare Part D claims for 18 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.