Ammar Istwani, M.D.
NPI 1386683258 · Diagnostic Radiology Physician · Long Beach, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ammar Istwani, M.D. is a Diagnostic Radiology Physician provider in Long Beach, CA (NPI 1386683258).
Provider details
- NPI number
- 1386683258
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G80027 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
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
3,142 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 1,088 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 321 | $40 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 220 | $86 |
| X-Ray of Chest, 2 Views71046 | 148 | $10 |
| Ct Scan of Upper Spine Without Contrast72125 | 101 | $47 |
| Ct Scan of Blood Vessels of Chest With Contrast71275 | 91 | $85 |
| Ct Scan of Chest With Contrast |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2018-08-20
Frequently asked questions
- What is Ammar Istwani's NPI number?
- Ammar Istwani's National Provider Identifier (NPI) is 1386683258, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ammar Istwani's specialty?
- Ammar Istwani is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ammar Istwani located?
- Ammar Istwani's practice location on file with NPPES is 1045 Atlantic Ave, Long Beach, CA 90813.
- What is Ammar Istwani's phone number?
- The practice phone number listed in the NPPES registry for Ammar Istwani is (562) 491-9167.
- Does Ammar Istwani accept Medicare?
- Ammar Istwani is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ammar Istwani's NPI active?
- Yes — Ammar Istwani's NPI (1386683258) is active in the NPPES registry as of the last update on 2018-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.