What is Robert Chang's specialty?

Robert Chang (NPI 1417044280) is a Medicare-billing provider whose primary specialty is Ophthalmology in Stanford, CA.

Where does Robert Chang practice?

Robert Chang practices in Stanford, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1417044280.

How much does Medicare pay Robert Chang?

Robert Chang (NPI 1417044280) received approximately $273K in total Medicare Part B payments, serving 752 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

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

Top paying entities

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