Provider guides
Bill from a specific hospital? Know what to look for.
Each US health system has its own billing quirks — physician staffing model, facility-fee policy, in-network vs out-of- network coverage rules. We've put together watch-lists for the biggest ones.
Kaiser Permanente
Multi-stateLargest integrated managed-care system in the US. ~12 million members across 8 states + DC.
HCA Healthcare
Multi-stateLargest for-profit hospital chain in the US. ~180 hospitals across 20 states.
Cleveland Clinic
OHTop-ranked academic medical center headquartered in Cleveland, OH. ~17 hospitals + ~220 outpatient sites.
Mayo Clinic
MNNonprofit academic medical center based in Rochester, MN. Locations in MN, AZ, FL, and London.
Sutter Health
CANonprofit health system serving Northern California. ~24 hospitals + ~200 clinics.
Banner Health
AZMajor nonprofit health system across AZ + 5 other states. ~30 hospitals.
Mass General Brigham
MALargest hospital system in New England. Includes Mass General + Brigham & Women's in Boston.
NYU Langone Health
NYAcademic medical center based in NYC. Manhattan, Brooklyn, Long Island.
UCSF Health
CAUniversity of California San Francisco academic medical center. SF + Mission Bay + Oakland.
Johns Hopkins Medicine
MDAcademic medical system anchored at Johns Hopkins Hospital in Baltimore. Affiliates across MD + DC + FL.
Tenet Healthcare
Multi-stateFor-profit operator of hospitals and surgery centers across the US.
Community Health Systems
Multi-stateTennessee-based operator of rural and community hospitals across 15 states.
Don't see your provider?
Audra audits bills from any US provider — these pages just exist to give context for the biggest health systems. Upload any bill and we'll catch the issues regardless of who sent it.
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