REFERRAL NETWORK
Where Catherine Zimmerman's patients come from & go
Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 30 inbound referrers · 0 outbound destinations.
Receives referrals from
Inbound — who sends patients here
| Physician | Patients | Visits |
|---|
| RIORDAN, WILLIAM | 83 | 282 |
| Mark Heilala Diagnostic Radiology · Grand Rapids, MI | 65 | 192 |
| GADOWSKI, GERALD | 55 | 240 |
| Cheboygan Life Support Systems Inc Ambulance Service Provider · Cheboygan, MI | 49 | 160 |
| Michael Kuhn Diagnostic Radiology · Fort Myers, FL | 49 | 167 |
| Michael Angileri Diagnostic Radiology · Petoskey, MI | 42 | 122 |
| Ryan Hoenicke Diagnostic Radiology · Traverse City, MI | 41 | 137 |
| HENRY, WILLIAM | 40 | 142 |
| William Shouldice Optometry · Gaylord, MI | 29 | 102 |
| Craig Duncan General Surgery · Cheboygan, MI | 28 | 172 |
| David Knitter Pulmonary Disease · Petoskey, MI | 28 | 194 |
| MUNSON HEALTHCARE OTSEGO MEMORIAL HOSPITAL | 27 | 100 |
Refers patients to
Outbound — where patients go next
No outbound pairs above the suppression threshold.
Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.
