PROVIDER PROFILE · NPI 1386634400
John WarrenMD
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). 18 inbound referrers · 46 outbound destinations.
| Physician | Patients | Visits |
|---|---|---|
| Cataract & Laser Center West, Llc Ambulatory Surgical Center · West Springfield, MA | 83 | 227 |
| HENRY HEYWOOD MEMORIAL HOSPITAL | 79 | 288 |
| Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA | 52 | 108 |
| BAYSTATE MEDICAL CENTER INC | 46 | 113 |
| ATHOL MEMORIAL HOSPITAL INCORPORATED | 35 | 59 |
| COOLEY DICKINSON HOSPITAL INC | 29 | 67 |
| THE MERCY HOSPITAL INC | 22 | 43 |
| BRATTLEBORO MEMORIAL HOSPITAL | 18 | 55 |
| Laurence Klein Hospitalist · Turners Falls, MA | 18 | 38 |
| Patricia Iverson Family Practice · Greenfield, MA | 18 | 43 |
| David Lotufo Ophthalmology · Quincy, MA | 17 | 32 |
| MATEIK, WILLIAM | 17 | 72 |
| Physician | Patients | Visits |
|---|---|---|
| BAYSTATE FRANKLIN MEDICAL CENTER | 133 | 282 |
| Cataract Laser Centercentral Llc Ambulatory Surgical Center · Gardner, MA | 97 | 362 |
| HENRY HEYWOOD MEMORIAL HOSPITAL | 72 | 250 |
| Cataract & Laser Center West, Llc Ambulatory Surgical Center · West Springfield, MA | 63 | 136 |
| BAYSTATE MEDICAL CENTER INC | 59 | 113 |
| NEWELL, CAROL | 59 | 130 |
| Haytham Mohamed Anesthesiology · Worcester, MA | 58 | 148 |
| HESS, PAUL | 58 | 144 |
| BAYSTATE MEDICAL CENTER INC | 47 | 100 |
| FRENCH, JEANNE | 39 | 90 |
| Pierre Alfred Ophthalmology · Athol, MA | 34 | 47 |
| Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA | 33 | 71 |