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 1235127150

Han Kyo Chang

Internal MedicineWalnut Creek, CAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
QUALITY · MIPS · 2024
No data available for this provider in 2024.
MEDICARE UTILIZATION · PART B · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
4,261
Beneficiaries
—
Total drug cost
$383K
Distinct drugs
75
Brand share
18.9%
Top prescribed drugs
Atorvastatin Calcium454 claims
Amlodipine Besylate269 claims
Losartan Potassium235 claims
Metformin Hcl234 claims
Lisinopril200 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where Han Kyo 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). 33 inbound referrers · 75 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
KALEIDA HEALTH352795
Michael Mineo
Emergency Medicine · Batavia, NY
3669
Shahir Aiad
Diagnostic Radiology · Buffalo, NY
2945
Roseanne Oliverio
Diagnostic Radiology · Williamsville, NY
2536
BARRON, MARTIN2451
Charles Sperrazza
General Practice · Williamsville, NY
2324
Gregory Difrancesco
Emergency Medicine · Dunkirk, NY
2249
KALEIDA HEALTH2276
Kenneth Pearsen
Diagnostic Radiology · Williamsville, NY
2141
DURANDETTO, LISA2047
Gail Stokoe
Diagnostic Radiology · Williamsville, NY
1931
Nicole Miller
Physician Assistant · Durham, NC
1937
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
KALEIDA HEALTH167437
MAKHIJA, JASBEER158381
KALEIDA HEALTH149606
Twin City Ambulance Corp
Ambulance Service Provider · Amherst, NY
121313
David Carlson
Cardiology · North Tonawanda, NY
87225
Victor Regenbogen
Diagnostic Radiology · Williamsville, NY
64110
Quest Diagnostics Of Pennsylvania, Inc.
Clinical Laboratory · Pittsburgh, PA
60157
Michael Beecher
Internal Medicine · Niagara Falls, NY
55129
John Patti
Internal Medicine · North Tonawanda, NY
53106
BARRON, MARTIN52102
VISITING NURSING ASSOCIATION OF WESTERN NEW YORK, INC.5171
David Peek
Hospitalist · Spokane, WA
4898
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.