PROVIDER PROFILE · NPI 1235188525
Mark Obrien
CROSS-REFERENCE
Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 11 inbound referrers · 26 outbound destinations.
| Physician | Patients | Visits |
|---|---|---|
| Theresa Osborne Internal Medicine · Grand Rapids, MI | 20 | 44 |
| Ronald Vanderlaan Cardiology · Grand Rapids, MI | 17 | 66 |
| James Larson Diagnostic Radiology · Grand Rapids, MI | 16 | 35 |
| SPECTRUM HEALTH PRIMARY CARE PARTNERS | 14 | 27 |
| QUICK, JOHN | 13 | 23 |
| Christopher Buchach Diagnostic Radiology · Grand Rapids, MI | 12 | 22 |
| Jon-Eric Notarnicola Diagnostic Radiology · Grand Rapids, MI | 11 | 18 |
| BOSANKO, CAROL MAE | 11 | 13 |
| Trevor Cummings Emergency Medicine · Grand Rapids, MI | 11 | 12 |
| PETERSON, NEIL | 11 | 14 |
| Maureen Pedres Internal Medicine · Grand Rapids, MI | 11 | 26 |
| Physician | Patients | Visits |
|---|---|---|
| SPECTRUM HEALTH HOSPITALS | 166 | 728 |
| Laboratory Corporation Of America Holdings Clinical Laboratory · Dublin, OH | 56 | 162 |
| SAINT MARY'S HEALTH SERVICES | 44 | 212 |
| REGENTS OF THE UNIVERSITY OF MICHIGAN | 36 | 86 |
| Life Ems Inc Ambulance Service Provider · Grand Rapids, MI | 24 | 41 |
| Theresa Osborne Internal Medicine · Grand Rapids, MI | 24 | 66 |
| Peter Nye Diagnostic Radiology · Grand Rapids, MI | 22 | 33 |
| Ronald Vanderlaan Cardiology · Grand Rapids, MI | 18 | 76 |
| Paramed Inc Ambulance Service Provider · Grand Rapids, MI | 18 | 66 |
| METROPOLITAN HOSPITAL | 17 | 38 |
| Mario Orsini Diagnostic Radiology · Grand Rapids, MI | 15 | 20 |
| SPECTRUM HEALTH PRIMARY CARE PARTNERS | 14 | 28 |