John Deirmenjian M.D.
About this NPIWhat this record shows.
NPI 1821009812 is registered to John Deirmenjian M.D., a Psychiatry practising at 333 W Broadway, Suite 201 in Long Beach, California. Psychiatry is the medical specialty focused on the diagnosis, treatment, and prevention of mental health conditions, including depression, anxiety, bipolar disorder, and schizophrenia. John Deirmenjian M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
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Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Medicaid
Source: NPPES public registry.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans John Deirmenjian M.D. accepts. To confirm in-network status with your specific health plan, contact John Deirmenjian M.D. directly at (310) 428-3234.
Frequently asked
Yes. NPI 1821009812 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Psychiatry is the medical specialty focused on the diagnosis, treatment, and prevention of mental health conditions, including depression, anxiety, bipolar disorder, and schizophrenia.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (310) 428-3234.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. John Deirmenjian M.D. is a Type-1 individual NPI.