PROVIDER PROFILE · NPI 1801107859

Peter ChangM.D.

OphthalmologyWaltham, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

3,883

Unique beneficiaries

—

Total services

32,526

Distinct HCPCS

Medicare payment

$1.9M

Peer benchmark

Total Medicare services vs. 558 Ophthalmology providers in MA — top quintile (cohort median 1,976).

PRESCRIBING · PART D · 2024

Total Rx claims

2,153

Beneficiaries

—

Total drug cost

$4.6M

Distinct drugs

Brand share

47.4%

Top prescribed drugs

Dorzolamide Hcl/Timolol Maleat171 claims

Prednisolone Acetate156 claims

Brimonidine Tartrate150 claims

Methotrexate Sodium133 claims

Timolol Maleate130 claims

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

0.0

Cost

71.4

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

1.05%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$204K

Payment records

215

By payment type

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$153K

Honoraria$19K

Consulting Fee$12K

Travel and Lodging$12K

Food and Beverage$7K

REFERRAL NETWORK

Where Peter 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). 4 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
FINDER, ANTHONY	33	38
Jennifer Lim Ophthalmology · Chicago, IL	19	64
William Mieler Ophthalmology · Burr Ridge, IL	17	90
Yannek Leiderman Ophthalmology · Chicago, IL	15	47

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