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PROVIDER PROFILE · NPI 1992894885

Robert ChangM.D.

NephrologyCorona, CAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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MEDICARE UTILIZATION · PART B · 2024
No data available for this provider in 2024.
QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
1,342
Beneficiaries
—
Total drug cost
$115K
Distinct drugs
30
Brand share
12.6%
Top prescribed drugs
Sevelamer Carbonate134 claims
Atorvastatin Calcium109 claims
Furosemide102 claims
Amlodipine Besylate96 claims
Losartan Potassium94 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where Robert Chang'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). 49 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
UHS-CORONA INC2491,540
Unilab Corporation
Clinical Laboratory · West Hills, CA
131718
Andrew Cheung
Nephrology · Corona, CA
1031,670
Michael Chan
Diagnostic Radiology · San Diego, CA
79562
Isaac Tsai
Internal Medicine · Corona, CA
79697
Darice Liu
Interventional Radiology · Orange, CA
78488
Bruce Omiya
Diagnostic Radiology · Anaheim, CA
71485
Gilbert Plasencia
Cardiology · Corona, CA
70446
PARKVIEW COMMUNITY HOSPITAL MEDICAL CENTER64192
L R Moscoso
Cardiology · Corona, CA
63525
NPI 125533553562492
Divyakant Kikani
Psychiatry · San Bernardino, CA
61579
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.