PROVIDER PROFILE · NPI 1164485991
Steven CallahanM.D.
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). 23 inbound referrers · 129 outbound destinations.
| Physician | Patients | Visits |
|---|---|---|
| Unilab Corporation Clinical Laboratory · West Hills, CA | 73 | 171 |
| Scott Williams Diagnostic Radiology · Stanford, CA | 46 | 79 |
| Shaya Ghazinoor Diagnostic Radiology · Newport Beach, CA | 36 | 58 |
| William Vandalsem Diagnostic Radiology · Newport Beach, CA | 22 | 38 |
| Howard Nakashioya Emergency Medicine · Newport Beach, CA | 21 | 28 |
| Frederick Birnberg Diagnostic Radiology · Newport Beach, CA | 20 | 36 |
| Brian Kong Hospitalist · Newport Beach, CA | 18 | 33 |
| Jadwiga Close Hospitalist · Newport Beach, CA | 17 | 46 |
| John Lieu Diagnostic Radiology · Palo Alto, CA | 17 | 34 |
| Tommy Lee Hospitalist · Newport Beach, CA | 16 | 22 |
| Steven Oglevie Diagnostic Radiology · Beverly Hills, CA | 16 | 35 |
| Allyson Hoppe Hospitalist · Newport Beach, CA | 16 | 29 |
| Physician | Patients | Visits |
|---|---|---|
| HOAG MEMORIAL HOSPITAL PRESBYTERIAN | 713 | 1,811 |
| Falck Mobile Health Corp Ambulance Service Provider · Orange, CA | 149 | 379 |
| City Of Newport Beach Ambulance Service Provider · Newport Beach, CA | 96 | 197 |
| Mark Chen Diagnostic Radiology · Newport Beach, CA | 91 | 152 |
| LIM, JOHN | 83 | 135 |
| Jinsoo Keyoung Diagnostic Radiology · Stanford, CA | 82 | 139 |
| Roger Thomas Diagnostic Radiology · Newport Beach, CA | 75 | 145 |
| Unilab Corporation Clinical Laboratory · West Hills, CA | 75 | 167 |
| William Vandalsem Diagnostic Radiology · Newport Beach, CA | 73 | 118 |
| CALIFORNIA LABORATORY SCIENCES LLC | 69 | 181 |
| Miles Chang Diagnostic Radiology · Newport Beach, CA | 62 | 98 |
| Humberto Wong Diagnostic Radiology · Stanford, CA | 58 | 84 |