PROVIDER PROFILE · NPI 1114964186
William O'callahanMD
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). 26 inbound referrers · 111 outbound destinations.
| Physician | Patients | Visits |
|---|---|---|
| Hamid Salamipour Diagnostic Radiology · Newton, MA | 43 | 78 |
| Steven Miller Diagnostic Radiology · Newton, MA | 42 | 65 |
| THE GENERAL HOSPITAL CORPORATION | 41 | 88 |
| MASS GENERAL BRIGHAM HOME CARE, INC. | 34 | 43 |
| Iris Foley Diagnostic Radiology · Newton, MA | 29 | 75 |
| Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA | 28 | 46 |
| Yamini Levitzky Cardiology · Braintree, MA | 27 | 41 |
| Edward Hurwitz Hospitalist · Boston, MA | 25 | 43 |
| SCHAFER, LEAH | 23 | 38 |
| FALLON SERVICE, INC. | 22 | 31 |
| CORRIGAN, BRENDA | 22 | 48 |
| POLGER, MARLA | 21 | 35 |
| Physician | Patients | Visits |
|---|---|---|
| NEWTON-WELLESLEY HOSPITAL | 574 | 1,654 |
| Cataldo Ambulance Service Inc Ambulance Service Provider · Somerville, MA | 143 | 399 |
| CORRIGAN, BRENDA | 119 | 173 |
| FALLON SERVICE, INC. | 119 | 196 |
| Mark Weinfeld Cardiology · Boston, MA | 111 | 185 |
| Yamini Levitzky Cardiology · Braintree, MA | 109 | 166 |
| Giulia Sheftel Cardiology · Newton, MA | 102 | 162 |
| BOLANIS, NANCY | 101 | 185 |
| Matthew Hoimes Diagnostic Radiology · Raleigh, NC | 86 | 152 |
| HAMILTON, EDNA | 76 | 129 |
| Stefanos Parpos Cardiology · Newton, MA | 75 | 113 |
| Kee Chung Diagnostic Radiology · Boston, MA | 68 | 118 |