PROVIDER PROFILE · NPI 1417044280

Robert ChangMD

PRACTICESTANFORD HEALTH CARESee all providers at this practice →

OphthalmologyStanford, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,558

Unique beneficiaries

—

Total services

3,084

Distinct HCPCS

Medicare payment

$242K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — above median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

1,736

Beneficiaries

—

Total drug cost

$288K

Distinct drugs

Brand share

38.4%

Top prescribed drugs

Latanoprost369 claims

Prednisolone Acetate202 claims

Timolol Maleate131 claims

Dorzolamide Hcl/Timolol Maleat107 claims

Brimonidine Tartrate80 claims

QUALITY · MIPS · 2024

Final MIPS score

88.5

Quality

87.1

Cost

69.5

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.57%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$38K

Payment records

By payment type

Consulting Fee$29K

Food and Beverage$3K

Travel and Lodging$3K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$3K

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). 8 inbound referrers · 22 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Robert Kule Ophthalmology · San Mateo, CA	106	347
Jon Keller Pathology · Palo Alto, CA	27	179
Kuldev Singh Ophthalmology · Stanford, CA	26	108
KERRINS, RONNI	22	41
Theodore Leng Ophthalmology · Stanford, CA	18	81
COUNTY OF SANTA CLARA	15	82
Steven Sanislo Ophthalmology · Stanford, CA	14	84
Amila Silva Ophthalmology · Stanford, CA	11	76

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
STANFORD HEALTH CARE	583	4,852
Robert Kule Ophthalmology · San Mateo, CA	58	337
Creed Stary Anesthesiology · Stanford, CA	51	208
CORNABY, TARA	42	184
Katherine Lowry Certified Registered Nurse Anesthetist (CRNA) · Stanford, CA	40	155
Don Nguyen Ophthalmology · Edmond, OK	34	128
David Nicholson Certified Registered Nurse Anesthetist (CRNA) · Boise, ID	31	126
Jon Keller Pathology · Palo Alto, CA	30	191
Unilab Corporation Clinical Laboratory · San Jose, CA	29	143
KERRINS, RONNI	26	103
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	15	58
Charles Lin Ophthalmology · Stanford, CA	14	107

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