Hamid Chalian, M.D.
NPI 1669736500 · Diagnostic Radiology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hamid Chalian, M.D. is a Diagnostic Radiology Physician provider in Orange, CA (NPI 1669736500).
Provider details
- NPI number
- 1669736500
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 11732640-1205 (UT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,284 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 of Chest With Contrast71260 | 575 | $55 |
| X-Ray of Chest, 1 View71045 | 472 | $9 |
| Ct Scan of Chest Without Contrast71250 | 269 | $53 |
| Ct Scan of Chest With Contrast71260 | 217 | $56 |
| Ct Scan of Chest Without Contrast71250 | 184 | $53 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 156 | $87 |
| X-Ray of Chest, 2 Views71046 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$12,133 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-06-26
- Last updated
- 2025-11-06
- Certified
- 2025-11-06
Frequently asked questions
- What is Hamid Chalian's NPI number?
- Hamid Chalian's National Provider Identifier (NPI) is 1669736500, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hamid Chalian's specialty?
- Hamid Chalian is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Hamid Chalian located?
- Hamid Chalian's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Hamid Chalian's phone number?
- The practice phone number listed in the NPPES registry for Hamid Chalian is (714) 456-8888.
- Does Hamid Chalian accept Medicare?
- Hamid Chalian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hamid Chalian's NPI active?
- Yes — Hamid Chalian's NPI (1669736500) is active in the NPPES registry as of the last update on 2025-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.