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 1487751798

Matthew RettigMD

Hematology-OncologyLos Angeles, CAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
PRESCRIBING · PART D · 2024
Total Rx claims
860
Beneficiaries
—
Total drug cost
$7.2M
Distinct drugs
9
Brand share
71.5%
Top prescribed drugs
Darolutamide220 claims
Enzalutamide161 claims
Relugolix125 claims
Apalutamide97 claims
Abiraterone Acetate94 claims
REFERRAL NETWORK

Where Matthew Rettig'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). 3 inbound referrers · 7 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
REGENTS OF THE UNIV OF CALIFORNIA28147
Unilab Corporation
Clinical Laboratory · West Hills, CA
21105
Antonio Gutierrez
Diagnostic Radiology · Los Angeles, CA
1136
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
REGENTS UNIV OF CALIF LOS ANGELES84789
Quest Diagnostics Nichols Institute
Clinical Laboratory · San Juan Capistrano, CA
38130
REGENTS OF THE UNIV OF CALIFORNIA21150
Regents Of The University Of
Clinical Laboratory · Panorama City, CA
1459
Unilab Corporation
Clinical Laboratory · West Hills, CA
1339
Martin Allen-Auerbach
Nuclear Medicine · Los Angeles, CA
1231
Barbara Kadell
Diagnostic Radiology · Los Angeles, CA
1130
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.
QUALITY · MIPS · 2024
Final MIPS score
89.3
Quality
80.6
Cost
73.8
Improvement activities
40.0
Promoting interop.
100.0
Payment adjustment
0.60%
Group
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
381
Unique beneficiaries
—
Total services
1,037
Distinct HCPCS
7
Medicare payment
$115K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 957 Hematology-Oncology providers in CA — below median (cohort median 4,173).
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$23K
Payment records
41
By payment type
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$17K
Travel and Lodging$3K
Consulting Fee$2K
Food and Beverage$762