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

STEPHEN IN SUN RYU

Allopathic & Osteopathic Physicians Neurological Surgery

NPI
1134153505
CMS profile
277939
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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Filter and download payment records

General Payments · PY2019 · Entire year

$185,628.30

224 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

Ownership and Investment Interests

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

Ownership and investment interests are reported as the value of an interest held, not as a payment received. They are a different measure from the payment total on this page and are never combined with it.

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

PY2019 · entire year · sorted by reported total

By paying entity

PY2019 · entire year · sorted by reported total

Paying entityAmountRecords
NuVasive, Inc. $82,354.93 100
Stryker Corporation $55,020.39 45
Zimmer Biomet Holdings, Inc. $33,064.73 50
DePuy Synthes Products, Inc. $8,525.60 13
Medtronic USA, Inc. $3,265.70 7
Medical Device Business Services, Inc. $3,077.76 3
DePuy Synthes Sales Inc. $129.93 2
Prosidyan, Inc $125.00 1
Cerapedics, Inc. $26.48 1
Spineology Inc. $25.90 1
Alphatec Spine, Inc $11.88 1

Payment records · PY2019

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

General Payments · PY2019 · Physicians and non-physician practitioners · CMS publication 2026-06-30

224 matching records · $185,628.30 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 224 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 1–50 of 224.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Stryker Corporation $72.0011/20/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875687 CMS
Stryker Corporation $15,500.0011/20/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875689 CMS
Stryker Corporation $11,250.0011/20/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875691 CMS
NuVasive, Inc. $1,109.3111/14/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705124885 CMS
NuVasive, Inc. $5,550.0011/14/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705125009 CMS
NuVasive, Inc. $9,600.0011/14/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705125011 CMS
NuVasive, Inc. $4,800.0011/12/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705124883 CMS
NuVasive, Inc. $10.0011/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705125013 CMS
Prosidyan, Inc $125.0011/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026707345795 CMS
Medical Device Business Services, Inc. $79.0811/07/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026655907897 CMS
NuVasive, Inc. $110.4011/05/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705125017 CMS
NuVasive, Inc. $35.0010/23/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705125015 CMS
Cerapedics, Inc. $26.4810/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026707788303 CMS
Medtronic USA, Inc. $107.2910/20/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026667724527 CMS
Medical Device Business Services, Inc. $2,880.0010/17/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026655907899 CMS
Stryker Corporation $25.6010/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875785 CMS
Stryker Corporation $147.5610/12/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875783 CMS
Stryker Corporation $70.2910/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875771 CMS
Stryker Corporation $94.5110/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875773 CMS
Stryker Corporation $136.3210/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875775 CMS
Stryker Corporation $540.1410/11/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875777 CMS
Stryker Corporation $5.7810/11/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875779 CMS
Stryker Corporation $155.5610/11/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875781 CMS
Stryker Corporation $70.2810/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875677 CMS
Stryker Corporation $94.5110/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875679 CMS
Stryker Corporation $540.1410/10/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875681 CMS
Stryker Corporation $5.7810/10/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875683 CMS
Stryker Corporation $136.3210/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875685 CMS
Stryker Corporation $1,576.6010/10/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026692875769 CMS
Zimmer Biomet Holdings, Inc. $20.6710/07/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515443 CMS
NuVasive, Inc. $113.8110/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705124881 CMS
Zimmer Biomet Holdings, Inc. $20.0010/04/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515415 CMS
Zimmer Biomet Holdings, Inc. $258.2010/04/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515431 CMS
Zimmer Biomet Holdings, Inc. $3.0810/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515453 CMS
Zimmer Biomet Holdings, Inc. $20.0010/03/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515403 CMS
Zimmer Biomet Holdings, Inc. $34.0010/03/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515407 CMS
Zimmer Biomet Holdings, Inc. $279.9610/03/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515409 CMS
Zimmer Biomet Holdings, Inc. $750.0010/03/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515419 CMS
Zimmer Biomet Holdings, Inc. $300.0010/03/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515423 CMS
Zimmer Biomet Holdings, Inc. $108.3010/03/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515427 CMS
Zimmer Biomet Holdings, Inc. $55.9110/03/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515435 CMS
Zimmer Biomet Holdings, Inc. $261.2010/03/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515439 CMS
NuVasive, Inc. $99.0009/30/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705124873 CMS
Medical Device Business Services, Inc. $118.6809/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026655907895 CMS
Medtronic USA, Inc. $3.5009/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026667705391 CMS
Zimmer Biomet Holdings, Inc. $40.8609/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026656515447 CMS
NuVasive, Inc. $12.4409/26/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705124857 CMS
NuVasive, Inc. $307.4109/26/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705124861 CMS
NuVasive, Inc. $99.0009/26/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705124863 CMS
NuVasive, Inc. $104.4009/25/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026705125051 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $185,628.30 224
PY2020 $85,236.42 75
PY2021 $79,629.51 87
PY2022 $149,041.83 130
PY2023 $150,233.21 151
PY2024 $112,469.92 121
PY2025 $85,212.34 59

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
STEPHEN IN SUN RYU, NPI 1134153505. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1134153505.
APA 7
IndustryPayments. (2026). STEPHEN IN SUN RYU, NPI 1134153505 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1134153505
Bluebook
STEPHEN IN SUN RYU, NPI 1134153505, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1134153505.

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