Largest groups
| Group | City | Clinicians |
|---|
| Aurora Medical Group, INC. | Milwaukee | 198 |
| The Medical College Of Wisconsin INC | Milwaukee | 123 |
| Vituity-Wisconsin Anesthesia SC | Pleasant Prairie | 105 |
| University Of Wisconsin Medical Foundation INC | Madison | 89 |
| Mchs Hospitals INC | Marshfield | 57 |
| Mercy Health System Corporation | Janesville | 43 |
| Association Of Hospital Anesthesiologists SC | Appleton | 40 |
| Mayo Clinic Health System-Northwest Wisconsin Region INC | Eau Claire | 39 |
| Anex, S.C. | Waukesha | 38 |
| Racine Anesthesia Services LLC | Mount Pleasant | 34 |
| Madison Anesthesiology Consultants, LLP | Madison | 34 |
| Gundersen Lutheran Medical Center INC | La Crosse | 32 |
| Dean Health Systems INC | Madison | 29 |
| Green Bay Anesthesia Assoc. SC | Green Bay | 27 |
| Central Wisconsin Anesthesiology | Wausau | 24 |
| Agnesian Healthcare INC | Fond Du Lac | 22 |
| Bellin Anesthesia Associates SC | Green Bay | 17 |
| Baycare Clinic LLP | Green Bay | 16 |
| Aspirus Rhinelander And Tomahawk Hospitals And Clinics, INC. | Rhinelander | 16 |
| The Monroe Clinic, INC. | Monroe | 15 |
| Aspirus Riverview Hospital And Clinics INC | Wisconsin Rapids | 14 |
| Childrens Specialty Group INC | Milwaukee | 14 |
| Mayo Clinic Health System-Southwest Wisconsin Region INC | La Crosse | 13 |
| Great Lakes Anesthesia And Pain Specialists SC | Franklin | 11 |
| Anesthesia Partners Services SC | Milwaukee | 9 |
Group size mix
| Clinicians per group ID | Group IDs |
|---|
| 1 | 16 |
| 2 to 4 | 15 |
| 5 to 9 | 8 |
| 10 to 24 | 10 |
| 25 or more | 14 |
Source: CMS Doctors and Clinicians National Downloadable File. Counts are Medicare enrollment records, not a full census.
