JAMES G MAZALEWSKI M.D.
NPI 1578674248
Radiology - Diagnostic Radiology in Melbourne, FL
About James G Mazalewski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAMES G MAZALEWSKI M.D. (NPI 1578674248) is an individual diagnostic radiology provider in Melbourne, Florida, licensed in Florida (ME62313) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS, is affiliated with Owensboro Health Regional Hospital, and maintains a secondary practice location in Melbourne.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
James G Mazalewski M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
21Medicare enrollment records show James Mazalewski reassigns Medicare billing to 21 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Melbourne, FL 32940
- Reassigned Medicare billing, Florida enrollment
- 378 clinicians in this Medicare group
Melbourne, FL 32901
- Reassigned Medicare billing, Florida enrollment
- 773 clinicians in this Medicare group
Tampa, FL 33606
- Reassigned Medicare billing, Florida enrollment
- 1,130 clinicians in this Medicare group
Atlanta, GA 30342
- Reassigned Medicare billing, Florida enrollment
- 127 clinicians in this Medicare group
Greensboro, NC 27401
- Reassigned Medicare billing, Florida enrollment
- 53 clinicians in this Medicare group
Murfreesboro, TN 37129
- Reassigned Medicare billing, Florida enrollment
- 26 clinicians in this Medicare group
Whitesburg, KY 41858
- Reassigned Medicare billing, Kentucky enrollment
- 579 clinicians in this Medicare group
Franklin, TN 37067
- Reassigned Medicare billing, Florida enrollment
- 25 clinicians in this Medicare group
Nashville, TN 37203
- Reassigned Medicare billing, Florida and Tennessee enrollments
- 89 clinicians in this Medicare group
Dickson, TN 37055
- Reassigned Medicare billing, Florida enrollment
- 22 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 41
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Owensboro Health Regional Hospital
Acute Care Hospitals · Owensboro, KYSt Francis Hospital - The Heart Center
Acute Care Hospitals · Roslyn, NYGood Samaritan Hospital Medical Center
Acute Care Hospitals · West Islip, NYSt John's Episcopal Hospital At South Shore
Acute Care Hospitals · Far Rockaway, NYSt Catherine Of Siena Hospital Medical Center
Acute Care Hospitals · Smithtown, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 32940 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MELBOURNE, FL 32940
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is James Mazalewski's NPI number?
The NPI number for James Mazalewski is 1578674248. It was assigned to this individual provider in the NPPES registry on August 31, 2006.
Where is James Mazalewski located?
James Mazalewski practices at 8745 N Wickham Rd Viera Hospital/Radiology Dept, Melbourne, FL 32940. The listed phone number is (321) 434-7313.
What is James Mazalewski's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is James Mazalewski enrolled in Medicare?
Yes. James Mazalewski is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for James Mazalewski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), James Mazalewski reassigns Medicare benefits to 21 organizations: Brevard Physician Associates, PLLC (Melbourne, FL), Health First Medical Group, LLC (Melbourne, FL), Mori Bean And Brooks Inc (Tampa, FL), Northside Radiology Associates LLC (Atlanta, GA), Greensboro Radiology, PA (Greensboro, NC) and 16 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for James Mazalewski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does James Mazalewski accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 4 other insurers list James Mazalewski as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is James Mazalewski affiliated with any hospitals?
According to CMS data, James Mazalewski is affiliated with Owensboro Health Regional Hospital, St Francis Hospital - The Heart Center, Good Samaritan Hospital Medical Center, St John's Episcopal Hospital At South Shore and St Catherine Of Siena Hospital Medical Center.
When was this NPI record last updated?
The NPPES record for James Mazalewski was last updated on March 12, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.