Ranked list
The 10 largest medical groups in California by Medicare Part B payments
The same ranking for California medical groups.
Ranked listRefreshed monthly
The 10 largest medical groups in Arizona by Medicare Part B payments
Mayo Clinic Arizona has the most Medicare Part B payments of any medical group in Arizona, $201.3 million, followed by SimonMed Imaging in Scottsdale ($122M) and Sonoran Radiology in Mesa ($117M). Together the 10 leaders account for $1.04 billion in Medicare Part B payments in six cities.
- Mayo Clinic Arizona$201.3M1,328physicians
- SimonMed Imaging$122M618physicians
- Sonoran Radiology$117M858physicians
- Ironwood Cancer & Research Centers$102.8M103physicians
- SimonMed Imaging$99.1M488physicians
- Arizona Oncology$91.3M114physicians
- HonorHealth Medical Group$86.8M575physicians
- District Medical Group$77.8M1,123physicians
- SimonMed Imaging$75.3M332physicians
- American Vision Partners$68.4M61physicians
The 10 highest of 2,505 Arizona medical groups that report Medicare Part B payments. Ranks compare size, not quality of care.
Every medical group in ArizonaThe 10 top Arizona medical groups hold 17% of all Medicare Part B payments
2,505 Arizona medical groups report Medicare Part B payments, $6.09 billion in all. The 10 on this list hold $1.04 billion of it. The median medical group has $323,875 in Medicare Part B payments, so Mayo Clinic Arizona is about 622 times that size.
- of all Medicare Part B payments at Arizona medical groups that report them
- 17%
- the size of the median Arizona medical group, which has $323,875 in Medicare Part B payments
- 622×
- of the 2,505 Arizona medical groups that report Medicare Part B payments
- 0.4%
How we ranked the top Arizona medical groups
- Measure
- Medicare Part B payments to each group from CMS claims data.
- What counts as a group
- One Medicare PAC ID. A group that bills under several names counts once.
- Field
- 2,505 Arizona medical groups in the Dmand AI database report Medicare Part B payments.
- Ties
- Medical groups with the same number share a rank.
- What a rank means
- Size only. A rank compares Medicare Part B payments; it says nothing about quality of care.
- Refresh
- Monthly. Updated Oct 28, 2026.
FAQ
Questions about the top Arizona medical groups
Answers from the same data, updated monthly.
Which Arizona medical group has the most Medicare Part B payments?
Mayo Clinic Arizona in Scottsdale, with $201.3 million in Medicare Part B payments. SimonMed Imaging is second with $122M.
What are the top 10 Arizona medical groups by Medicare Part B payments?
Mayo Clinic Arizona ($201.3M), SimonMed Imaging ($122M), Sonoran Radiology ($117M), Ironwood Cancer & Research Centers ($102.8M), SimonMed Imaging ($99.1M), Arizona Oncology ($91.3M), HonorHealth Medical Group ($86.8M), District Medical Group ($77.8M), SimonMed Imaging ($75.3M), American Vision Partners ($68.4M).
How many Medicare Part B payments does a typical Arizona medical group have?
The median Arizona medical group that reports Medicare Part B payments has $323,875 in Medicare Part B payments, out of 2,505 that report them.
How often is this list updated?
Every month, when the Dmand AI database refreshes. This version is from Oct 28, 2026.
More ranked lists
Every ranked listRanked list
The 10 largest medical groups in the US by Medicare Part B payments
The national ranking by Medicare Part B payments.
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