John Mgrditch Deirmenjian, M.D.
Psychiatry Physician · Long Beach, CA
John Mgrditch Deirmenjian, M.D. is a psychiatry physician with a practice address in Long Beach, California, and NPI 1821009812, issued on Aug 11, 2006. Check the license (California G77009, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Mgrditch Deirmenjian
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G77009 CA
Self-reported in NPPES; status is on the state search - Practice location
- 333 W Broadway, Long Beach, CA 90802
- Phone
- (310) 428-3234
- Enumerated
- Aug 11, 2006
- Record last updated
- Jan 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (562) 901-0501
- Medicaid ID
- 00G770090 CA
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify John Mgrditch Deirmenjian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77009Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
52% more Medicare Part D claims than the average psychiatry physician in 2024
1,517 Medicare Part D claims for 87 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
- Alprazolam218 claims
- Clonazepam110 claims
- Quetiapine Fumarate110 claims
- Lorazepam92 claims
- Zolpidem Tartrate88 claims
- Escitalopram Oxalate80 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.
John Mgrditch Deirmenjian among 8,673 psychiatry physician records in California
John Mgrditch Deirmenjian, 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 fileNo · 38% of these records are
- Record last updated2011 · 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 Long Beach → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Gol Ara, MDLong Beach, CA 908021780180687
- Nadia Barati, MDLong Beach, CA 908021497917207
- Joshua Flatow, M.D.Long Beach, CA 908021487996302
- Markus Horvath, M.D.Long Beach, CA 908021073632345
- Rukan Huq, MDLong Beach, CA 908021033799168
- Nathan Lavid, M.D.Long Beach, CA 908021396803664
- Asheena Lee, M.D.Long Beach, CA 908021538425772
- Helen Liovin, MDLong Beach, CA 908021144347022
Common questions
What is John Mgrditch Deirmenjian, M.D.'s NPI number?
John Mgrditch Deirmenjian, M.D.'s National Provider Identifier (NPI) is 1821009812, issued on Aug 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Mgrditch Deirmenjian, M.D. located?
The NPPES record lists a practice address at 333 W Broadway, Long Beach, CA, 90802. Phone: (310) 428-3234. Providers update this record themselves, so call before visiting.
How can I verify John Mgrditch Deirmenjian, M.D.'s license?
NPPES lists California license number G77009, 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 John Mgrditch Deirmenjian, M.D. prescribe under Medicare Part D?
In 2024, John Mgrditch Deirmenjian, M.D. had 1,517 Medicare Part D claims for 87 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.