caretrace.iopowered by▸healthparse
SearchCohort Builder
Tools▾
KOL FinderTerritoriesDrug Compare
AI Query
Browse▾
By stateBy specialty
Pricing
SearchCohort BuilderToolsKOL FinderTerritoriesDrug CompareAI QueryBrowseBy stateBy specialtyPricing
PROVIDER PROFILE · NPI 1821071507

NPI 1821071507

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
MEDICARE UTILIZATION · PART B · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
No data available for this provider in 2024.
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$125
Payment records
1
By payment type
Food and Beverage$125
REFERRAL NETWORK

Where NPI 1821071507'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). 13 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Richard Goldman
Diagnostic Radiology · Santa Monica, CA
41534
Robert Wollman
Radiation Oncology · Santa Monica, CA
402,223
Ronald Thompson
Radiation Oncology · Santa Monica, CA
371,099
PROVIDENCE HEALTH SYSTEM - SOUTHERN CALIFORNIA29144
Alexander Black
Hematology-Oncology · Santa Clarita, CA
261,556
Rena Callahan
Hematology-Oncology · Valencia, CA
211,608
Unilab Corporation
Clinical Laboratory · West Hills, CA
18351
GADOWSKI, DOUGLAS16168
Henry Shih
Diagnostic Radiology · Los Angeles, CA
1497
Linas Kazlauskas
Radiation Oncology · Glendale, CA
13364
Ian Levin
Diagnostic Radiology · Los Angeles, CA
12116
Omar Sahagun
Diagnostic Radiology · Los Angeles, CA
11101
Refers patients to
Outbound — where patients go next
No outbound pairs above the suppression threshold.
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.