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 1225118151

John WarfieldMD.

PRACTICEPHOENIX INDIAN MEDICAL CENTERSee all providers at this practice →
Diagnostic RadiologyPhoenix, AZI
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.
FACILITY AFFILIATIONS

Hospital & Facility Affiliations (3)

CCN 030024
Hospital
CCN 030078
Hospital
CCN 030094
Hospital
PRESCRIBING · PART D · 2024
Total Rx claims
40
Beneficiaries
—
Total drug cost
$23K
Distinct drugs
3
Brand share
70.0%
Top prescribed drugs
Tirzepatide17 claims
Ezetimibe12 claims
Apixaban11 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
666
Unique beneficiaries
—
Total services
725
Distinct HCPCS
18
Medicare payment
$15K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 621 Diagnostic Radiology providers in AZ — bottom quintile (cohort median 4,389).
REFERRAL NETWORK

Where John Warfield'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). 11 inbound referrers · 42 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
DHEW IND HLTH SV HLTH SVS & MNTL HLTH ADM406986
NPI 12453328082035
SABAL, CLAUDIO2024
Clarrisa Phan
Family Practice · Phoenix, AZ
1940
POIRIER, PHILIP1633
Angie Huxley
Internal Medicine · Sun City, AZ
1543
BOSTON, GARY1532
MERZ, GUY1333
SPECTRA LABORATORIES INC1214
Gem Bartsch
Nurse Practitioner · Scottsdale, AZ
1131
Laurie Farricielli
Internal Medicine · Phoenix, AZ
1123
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
DHEW IND HLTH SV HLTH SVS & MNTL HLTH ADM265581
DHHS IHS PHOENIX AREA37102
DHHS IHS PHOENIX AREA35108
NPI 12453328082677
LY, TRUNG2653
SABAL, CLAUDIO2536
BANNER - UNIVERSITY MEDICAL CENTER PHOENIX2534
VHS OF PHOENIX INC2429
Rocky Mountain Holdings, Llc
Ambulance Service Provider · Sylacauga, AL
2432
POIRIER, PHILIP2362
Melissa Martin
Diagnostic Radiology · Phoenix, AZ
2228
Sheela Kalangi
Internal Medicine · Phoenix, AZ
2150
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.