What is Margaret Chang's specialty?

Margaret Chang (NPI 1477504405) is a Medicare-billing provider whose primary specialty is Ophthalmology in Sacramento, CA.

Where does Margaret Chang practice?

Margaret Chang practices in Sacramento, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1477504405.

How much does Medicare pay Margaret Chang?

Margaret Chang (NPI 1477504405) received approximately $4.4M in total Medicare Part B payments, serving 1,563 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1477504405

Margaret ChangM.D.

PRACTICEVITREO-RETINAL MEDICAL GROUP, INC.See all providers at this practice →

OphthalmologySacramento, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

4,917

Unique beneficiaries

—

Total services

67,426

Distinct HCPCS

Medicare payment

$4.3M

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

515

Beneficiaries

—

Total drug cost

$16K

Distinct drugs

Brand share

2.5%

Top prescribed drugs

Ketorolac Tromethamine201 claims

Prednisolone Acetate122 claims

Ofloxacin95 claims

Latanoprost50 claims

Brimonidine Tartrate20 claims

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

100.0

Cost

0.0

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

1.05%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$69K

Payment records

By payment type

Consulting Fee$49K

Travel and Lodging$10K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$7K

Food and Beverage$3K

Top paying entities

Consulting Fee$49K

Travel and Lodging$10K

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$7K

Food and Beverage$3K

REFERRAL NETWORK

Where Margaret 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). 38 inbound referrers · 71 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MURRAY, RICHARD	66	91
SUTTER GOULD MEDICAL FOUNDATION	54	186
ENLOE MEDICAL CENTER	46	126
SUTTER VALLEY HOSPITALS	38	54
David Cupp Ophthalmology · Sacramento, CA	26	36
DOCTORS MEDICAL CENTER OF MODESTO, INC.	22	40
Resham Chahal Ophthalmology · Concord, CA	20	29
Robert Equi Ophthalmology · Sacramento, CA	20	27
Joel Pearlman Ophthalmology · Sacramento, CA	19	26
Dorotheea Warmerdam Ophthalmology · Sacramento, CA	19	30
NPI 1255335535	19	39
Arun Patel Ophthalmology · Sacramento, CA	18	26

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · Sacramento, CA	347	822
Sutter Valley Medical Foundation Clinical Laboratory · Sacramento, CA	157	786
Northern California Advanced Surgery Center Lp Ambulatory Surgical Center · Sacramento, CA	88	127
OROVILLE HOSPITAL	71	129
SONORA COMMUNITY HOSPITAL	63	184
REGENTS OF THE UNIVERSITY OF CALIFORNIA	58	115
SUTTER GOULD MEDICAL FOUNDATION	54	216
ENLOE MEDICAL CENTER	53	126
MARSHALL MEDICAL CENTER	44	201
Laboratory Corporation Of America Clinical Laboratory · San Diego, CA	44	80
SUTTER VALLEY HOSPITALS	43	59
NORTHBAY HEALTHCARE GROUP	42	117

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