Joy Iskarous
Psychiatry Physician · Loma Linda, CA
Joy Iskarous is a psychiatry physician with a practice address in Loma Linda, California, and NPI 1528403516, issued on May 3, 2013. Check the license (California 20A14033, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joy Iskarous
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 20A14033 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11234 Anderson St, Loma Linda, CA 92354
- Phone
- (909) 558-9532
- Enumerated
- May 3, 2013
- Record last updated
- May 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20180607002208); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 11234 Anderson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joy Iskarous in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average psychiatry physician in 2024
858 Medicare Part D claims for 104 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims.
Most prescribed
- Clonazepam63 claims
- Quetiapine Fumarate63 claims
- Trazodone Hcl57 claims
- Sertraline Hcl52 claims
- Lorazepam48 claims
- Gabapentin47 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
- Southern California Permanente Medical GroupSanta Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joy Iskarous among 8,673 psychiatry physician records in California
Joy Iskarous 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 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2013 · 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).
47 psychiatry physician records list a practice address in Loma Linda
They are 47 of the 4,863 NPPES records with a practice address in Loma Linda, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Loma Linda → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Michael Christensen, M.D.Loma Linda, CA 923541518081967
- George Christison, M.D.Loma Linda, CA 923541174548135
- Jennifer FerrerLoma Linda, CA 923541821299660
- Teresa Frausto, M.D.Loma Linda, CA 923541992737068
- Leia Gill, M.D.Loma Linda, CA 923541396922605
- Carmen Gonzales-Nate, M.D.Loma Linda, CA 923541063578607
- Lauren Grawert, MDLoma Linda, CA 923541508093543
- Serafin Lalas, M.D.Loma Linda, CA 923541700050515
Common questions
What is Joy Iskarous's NPI number?
Joy Iskarous's National Provider Identifier (NPI) is 1528403516, issued on May 3, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Joy Iskarous located?
The NPPES record lists a practice address at 11234 Anderson St, Loma Linda, CA, 92354. Phone: (909) 558-9532. Providers update this record themselves, so call before visiting.
How can I verify Joy Iskarous's license?
NPPES lists California license number 20A14033, 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 Joy Iskarous prescribe under Medicare Part D?
In 2024, Joy Iskarous had 858 Medicare Part D claims for 104 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.