American Oncology Network Expands Arizona Footprint with Flagstaff Practice Acquisition — American Oncology Network, Inc.

Event summary

Medical oncologist Peter Mathern and nurse practitioner Char Prado joined Cancer and Blood Specialists of Arizona (CBSA), an AON partner practice, effective August 1, 2026.
The transition consolidates a long-standing Flagstaff oncology practice under the AON network, expanding its presence in northern Arizona.
AON now represents over 350 providers across 21 states through its community-based oncology model.

The big picture

This move aligns with AON’s strategy of consolidating independent oncology practices to enhance care access while leveraging economies of scale. The acquisition underscores the trend toward physician-led networks as a sustainable model for community-based cancer care, particularly in regions with limited specialized healthcare infrastructure.

What we're watching

Integration Challenges: How AON will maintain patient continuity and service quality during the transition of Dr. Mathern’s practice.
Network Growth Strategy: Whether AON can sustain its rapid expansion while preserving community-based care models.
Regional Market Penetration: The pace at which AON extends its reach into underserved rural and tribal communities in Arizona.