Quick answers
- Does Michael N. Brant-Zawadzki accept Medicare assignment?
- Yes. Medicare's clinician data says Michael N. Brant-Zawadzki accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Michael N. Brant-Zawadzki see?
- In 2024, CMS data shows 512 Original Medicare patients and 666 services for Michael N. Brant-Zawadzki. This counts Original Medicare only and measures volume, not quality.
- What is Michael N. Brant-Zawadzki's NPI number?
- 1821042532. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Michael N. Brant-Zawadzki, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 512 |
|---|---|
| Services billed to Medicare | 666 |
| Different services or procedures | 48 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Ct scan head or brain without contrast (70450)127 services
- X-ray of chest, 1 view (71045)127 services
- Mri scan of brain before and after contrast (70553)52 services
- Mri scan of brain without contrast (70551)48 services
- Mri scan of lower spinal canal without contrast (72148)38 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Ischemic heart disease39%
- Anxiety33%
- Chronic kidney disease33%
Hospitals where Michael N. Brant-Zawadzki works
Medicare's Facility Affiliation Data lists Michael N. Brant-Zawadzki at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025
- Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
Practice locations
Addresses where Michael N. Brant-Zawadzki is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 11; the Medicare profile lists all.
- 1 Hoag DrNewport Beach, CA 92663 (949) 645‑3534
- 100 Hazard Ave, Suite 100Enfield, CT 06082 (860) 289‑3375
- 1221 W Coast Hwy, Apt 413Newport Beach, CA 92663 (860) 289‑3375
- 15000 Kensington Park Dr, Suite 150Tustin, CA 92782 (714) 477‑8340
- 16200 Sand Canyon AveIrvine, CA 92618 (949) 764‑4624
Group practices
Medicare enrollment lists Michael N. Brant-Zawadzki as a member of these groups (CMS data updated October 2, 2026).
- Jefferson Radiology PC114 clinicians in the group
- Connecticut Imaging Partners LLC104 clinicians in the group
- Farmington Imaging Center LLC71 clinicians in the group
- Newport Harbor Radiology Associates Medical Group Inc70 clinicians in the group
- Newport Center Radiology Associates Medical Group Inc59 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Newport Beach
Clinicians with the same Medicare primary specialty in Newport Beach, CA — not a recommendation.
Other clinicians in Jefferson Radiology PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1975 (51 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821042532 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians