Dianna Chooljian, MD PHD MPH
NPI 1902888043 · Neuroradiology Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dianna Chooljian, MD PHD MPH is a Neuroradiology Physician provider in Long Beach, CA (NPI 1902888043).
Provider details
- NPI number
- 1902888043
- Entity type
- Individual
- Primary specialty
- Neuroradiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD PHD MPH
- Sex
- Female
- Sole proprietor
- No
- License
- G57579 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,389 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 486 | $41 |
| X-Ray of Chest, 1 View71045 | 205 | $9 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 110 | $82 |
| Ct Scan of Blood Vessels of Head With Contrast70496 | 109 | $84 |
| Mri Scan of Brain Without Contrast70551 | 96 | $72 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 76 | $73 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-11-15
- Last updated
- 2009-04-20
Frequently asked questions
- What is Dianna Chooljian's NPI number?
- Dianna Chooljian's National Provider Identifier (NPI) is 1902888043, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dianna Chooljian's specialty?
- Dianna Chooljian is listed in the NPPES registry with a primary specialty of Neuroradiology Physician (Allopathic & Osteopathic Physicians).
- Where is Dianna Chooljian located?
- Dianna Chooljian's practice location on file with NPPES is 2801 Atlantic Ave, Long Beach, CA 90806.
- What is Dianna Chooljian's phone number?
- The practice phone number listed in the NPPES registry for Dianna Chooljian is (562) 933-1550.
- Does Dianna Chooljian accept Medicare?
- Dianna Chooljian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dianna Chooljian's NPI active?
- Yes — Dianna Chooljian's NPI (1902888043) is active in the NPPES registry as of the last update on 2009-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.