PROVIDER PROFILE · NPI 1831166990

Tony ChangMD

Internal MedicineMadison, WII

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

822

Unique beneficiaries

—

Total services

1,064

Distinct HCPCS

Medicare payment

$40K

Peer benchmark

Total Medicare services vs. 1,244 Internal Medicine providers in WI — top quintile (cohort median 578).

PRESCRIBING · PART D · 2024

Total Rx claims

7,331

Beneficiaries

—

Total drug cost

$745K

Distinct drugs

126

Brand share

22.0%

Top prescribed drugs

Atorvastatin Calcium565 claims

Amlodipine Besylate358 claims

Lisinopril295 claims

Apixaban264 claims

Omeprazole218 claims

QUALITY · MIPS · 2024

Final MIPS score

83.3

Quality

87.8

Cost

75.8

Improvement activities

40.0

Promoting interop.

77.0

Payment adjustment

0.35%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Tony 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). 8 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MERITER HOSPITAL, INC.	57	157
Associated Regional And University Pathologists Inc Clinical Laboratory · Salt Lake City, UT	20	95
Peter Chase Diagnostic Radiology · Madison, WI	16	43
MERITER HOSPITAL, INC.	16	76
WEGENKE, JOHN	14	91
John Park Interventional Radiology · Madison, WI	13	28
John Temprano Ophthalmology · Middleton, WI	13	56
Eugene Kaji Cardiology · Fitchburg, WI	12	49

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.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history