Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Covered recipient · General Payments record

ROBERT T CHANG

Allopathic & Osteopathic Physicians Ophthalmology Glaucoma Specialist

NPI
1417044280
CMS profile
336464
Location
STANFORD, CA

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2023 · Entire year

$11,988.27

49 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2023 · entire year · sorted by reported total

By paying entity

PY2023 · entire year · sorted by reported total

Paying entityAmountRecords
Alcon Vision LLC $5,440.83 30
Sight Sciences, Inc. $4,032.78 6
Carl Zeiss Meditec USA, Inc. $1,163.30 4
Carl Zeiss Meditec, Inc. $650.00 1
Glaukos Corporation $260.82 3
Harrow Eye, LLC $124.72 1
AbbVie Inc. $121.17 1
Johnson & Johnson Surgical Vision, Inc. $104.93 2
Nova Eye, Inc. $89.72 1

Payment records · PY2023

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

49 matching records · $11,988.27 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 49 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–49 of 49.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Alcon Vision LLC $143.9412/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017319421 CMS
Alcon Vision LLC $64.2012/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261017319417 CMS
Alcon Vision LLC $21.1112/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764307 CMS
Alcon Vision LLC $34.0512/06/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764341 CMS
Sight Sciences, Inc. $750.0011/22/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261056698967 CMS
Alcon Vision LLC $570.0011/21/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261001581555 CMS
Alcon Vision LLC $24.3311/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764325 CMS
Alcon Vision LLC $144.3611/04/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758889 CMS
Alcon Vision LLC $137.8110/26/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758875 CMS
Nova Eye, Inc. $89.7210/11/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261061074917 CMS
Glaukos Corporation $134.7910/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261059860613 CMS
Alcon Vision LLC $126.1410/06/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758865 CMS
Carl Zeiss Meditec, Inc. $650.0010/05/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261059459287 CMS
AbbVie Inc. $121.1708/23/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026996389693 CMS
Alcon Vision LLC $21.0308/23/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764299 CMS
Alcon Vision LLC $9.8308/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764285 CMS
Alcon Vision LLC $23.3508/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764321 CMS
Carl Zeiss Meditec USA, Inc. $538.0008/04/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261058051349 CMS
Carl Zeiss Meditec USA, Inc. $54.4108/04/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261058051359 CMS
Alcon Vision LLC $158.2806/21/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758923 CMS
Alcon Vision LLC $26.7306/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764331 CMS
Alcon Vision LLC $23.1606/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764313 CMS
Johnson & Johnson Surgical Vision, Inc. $72.1405/25/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026990947153 CMS
Carl Zeiss Meditec USA, Inc. $494.0005/19/2023 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261058051345 CMS
Carl Zeiss Meditec USA, Inc. $76.8905/19/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261058051355 CMS
Alcon Vision LLC $570.0005/18/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261001581541 CMS
Alcon Vision LLC $150.0005/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758911 CMS
Alcon Vision LLC $44.8505/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758821 CMS
Harrow Eye, LLC $124.7205/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261060014777 CMS
Glaukos Corporation $94.0405/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261059860611 CMS
Alcon Vision LLC $147.9805/05/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758897 CMS
Sight Sciences, Inc. $103.6105/05/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261056694031 CMS
Alcon Vision LLC $111.8704/06/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758859 CMS
Sight Sciences, Inc. $24.3903/29/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261056694035 CMS
Alcon Vision LLC $570.0003/24/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261001581531 CMS
Alcon Vision LLC $46.4203/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758837 CMS
Alcon Vision LLC $150.0003/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758903 CMS
Alcon Vision LLC $20.2503/06/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764293 CMS
Glaukos Corporation $31.9903/03/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261059860609 CMS
Alcon Vision LLC $45.0303/02/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758827 CMS
Alcon Vision LLC $40.4203/01/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995764349 CMS
Alcon Vision LLC $1,710.0002/10/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261001581573 CMS
Sight Sciences, Inc. $44.5002/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261056694047 CMS
Sight Sciences, Inc. $3,000.0002/08/2023 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/20261056698963 CMS
Alcon Vision LLC $54.1801/30/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758845 CMS
Sight Sciences, Inc. $110.2801/25/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261056694043 CMS
Alcon Vision LLC $143.3701/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758881 CMS
Alcon Vision LLC $108.1401/15/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026995758851 CMS
Johnson & Johnson Surgical Vision, Inc. $32.7901/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026990947149 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $11,523.66 20
PY2020 $4,213.72 11
PY2021 $10,618.67 41
PY2022 $8,280.84 47
PY2023 $11,988.27 49
PY2024 $38,390.38 76
PY2025 $20,483.20 49

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.

Cite this record.

Plain
ROBERT T CHANG, NPI 1417044280. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1417044280.
APA 7
IndustryPayments. (2026). ROBERT T CHANG, NPI 1417044280 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1417044280
Bluebook
ROBERT T CHANG, NPI 1417044280, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1417044280.

Source: Centers for Medicare & Medicaid Services, Open Payments.