REFERRAL NETWORK
Where Mark Harlacher'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). 17 inbound referrers · 19 outbound destinations.
Receives referrals from
Inbound — who sends patients here
| Physician | Patients | Visits |
|---|
| DIGNITY HEALTH | 105 | 150 |
| DIGNITY HEALTH | 58 | 82 |
| Unilab Corporation Clinical Laboratory · West Hills, CA | 48 | 79 |
| THEURER, WILLIAM | 30 | 63 |
| Marlon Black Diagnostic Radiology · Santa Barbara, CA | 29 | 52 |
| Sukhpreet Walia Gastroenterology · Oxnard, CA | 28 | 60 |
| William Deruso Diagnostic Radiology · Santa Barbara, CA | 27 | 45 |
| Micha Rojany Gastroenterology · Sacramento, CA | 21 | 50 |
| Sean Freyne Diagnostic Radiology · Fargo, ND | 15 | 23 |
| Nicholas Hanson Diagnostic Radiology · Salem, OR | 13 | 19 |
| Kevin Major Vascular Surgery · Oxnard, CA | 12 | 25 |
| American Medical Response Ambulance Service Inc Ambulance Service Provider · Moorpark, CA | 12 | 16 |
Refers patients to
Outbound — where patients go next
| Physician | Patients | Visits |
|---|
| Spencer Eye Surgery & Laser Center, Llc Ambulatory Surgical Center · Camarillo, CA | 45 | 56 |
| Gregory Spencer Ophthalmology · Oxnard, CA | 45 | 64 |
| Unilab Corporation Clinical Laboratory · West Hills, CA | 37 | 66 |
| DIGNITY HEALTH | 36 | 60 |
| Joanna Xie Pathology · West Hollywood, CA | 29 | 32 |
| NPI 1730100124 | 23 | 39 |
| Anthony Migler Pathology · Oxnard, CA | 20 | 21 |
| BERRETT, STEVEN | 19 | 31 |
| Gold Coast Ambulance Service Ambulance Service Provider · Oxnard, CA | 19 | 33 |
| NPI 1851334676 | 19 | 19 |
| Karen Simon Gastroenterology · Oxnard, CA | 17 | 23 |
| Micha Rojany Gastroenterology · Sacramento, CA | 14 | 20 |
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.
