John Deirmenjian, M.D.
NPI 1821009812 · Psychiatry Physician · Long Beach, CA
John Deirmenjian, M.D. is a Psychiatry Physician provider in Long Beach, CA (NPI 1821009812).
Provider details
- NPI number
- 1821009812
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G77009 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Alprazolam | 218 | 28 |
| Clonazepam | 110 | 17 |
| Quetiapine Fumarate | 110 | 12 |
| Lorazepam | 92 | 13 |
| Zolpidem Tartrate | 88 | 12 |
| Escitalopram Oxalate | 80 | 19 |
| Temazepam | 64 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-11
- Last updated
- 2011-01-28
Frequently asked questions
- What is John Deirmenjian's NPI number?
- John Deirmenjian's National Provider Identifier (NPI) is 1821009812, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Deirmenjian's specialty?
- John Deirmenjian is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is John Deirmenjian located?
- John Deirmenjian's practice location on file with NPPES is 333 W Broadway, Long Beach, CA 90802-4437.
- What is John Deirmenjian's phone number?
- The practice phone number listed in the NPPES registry for John Deirmenjian is (310) 428-3234.
- Is John Deirmenjian's NPI active?
- Yes — John Deirmenjian's NPI (1821009812) is active in the NPPES registry as of the last update on 2011-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.