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 1639128242

Joel GarrisMD

PRACTICEDR RITA KAR INCSee all providers at this practice →
Diagnostic RadiologyWhittier, CAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
No data available for this provider in 2024.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
286
Unique beneficiaries
—
Total services
286
Distinct HCPCS
9
Medicare payment
$10K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 3,474 Diagnostic Radiology providers in CA — below median (cohort median 2,975).
REFERRAL NETWORK

Where Joel Garris'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). 69 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
PIH HEALTH WHITTIER HOSPITAL8661,954
Unilab Corporation
Clinical Laboratory · West Hills, CA
205472
Zareh Ounjian
Diagnostic Radiology · Whittier, CA
145277
Richard Parks
Interventional Cardiology · Whittier, CA
134187
Nanette Kovash
Diagnostic Radiology · Sacramento, CA
131247
Daniel Saket
Diagnostic Radiology · Whittier, CA
129221
Robert Kleinman
Diagnostic Radiology · Whittier, CA
126241
Alireza Jafari
Cardiology · Whittier, CA
116227
Christina Lee
Diagnostic Radiology · Whittier, CA
113201
Sudhaker Nayak
Cardiology · Whittier, CA
112291
Paresh Patel
Internal Medicine · Whittier, CA
91176
Richard Rison
Neurology · Whittier, CA
75180
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.