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

CHARLES TUAN-TU S NGUYEN

Allopathic & Osteopathic Physicians Psychiatry & Neurology Psychiatry

NPI
1942380118
CMS profile
42595
Location
IRVINE, 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 · PY2021 · Entire year

$104,823.77

147 records · 0 disputed

Summary and payment records

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

“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

PY2021 · entire year · sorted by reported total

By paying entity

PY2021 · entire year · sorted by reported total

Payment records · PY2021

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

General Payments · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30

147 matching records · $104,823.77 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 147 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 147.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Otsuka America Pharmaceutical, Inc. $189.6112/17/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762439 CMS
Otsuka America Pharmaceutical, Inc. $108.9712/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762435 CMS
ITI, Inc. $6.9812/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830164003 CMS
Sunovion Pharmaceuticals Inc. $20.2812/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026821648779 CMS
Otsuka America Pharmaceutical, Inc. $4,752.0012/08/2021 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
06/30/2026834762431 CMS
ITI, Inc. $3,800.0012/07/2021 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
06/30/2026830163991 CMS
ITI, Inc. $142.2812/07/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163995 CMS
ITI, Inc. $94.7412/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163999 CMS
ITI, Inc. $2,375.0012/02/2021 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
06/30/2026830163979 CMS
ITI, Inc. $47.2012/02/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163983 CMS
ITI, Inc. $100.0012/02/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163987 CMS
Otsuka America Pharmaceutical, Inc. $2,808.0011/24/2021 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
06/30/2026834762423 CMS
Otsuka America Pharmaceutical, Inc. $2,808.0011/24/2021 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
06/30/2026834762427 CMS
Otsuka America Pharmaceutical, Inc. $1,620.0011/19/2021 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
06/30/2026834762419 CMS
ITI, Inc. $1,900.0011/18/2021 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
06/30/2026830163971 CMS
ITI, Inc. $19.8911/18/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163975 CMS
Otsuka America Pharmaceutical, Inc. $108.7611/18/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762415 CMS
Otsuka America Pharmaceutical, Inc. $121.9011/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762411 CMS
Otsuka America Pharmaceutical, Inc. $182.5911/12/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762407 CMS
Otsuka America Pharmaceutical, Inc. $175.9611/10/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762395 CMS
Otsuka America Pharmaceutical, Inc. $124.9911/10/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762399 CMS
Otsuka America Pharmaceutical, Inc. $2,268.0011/10/2021 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
06/30/2026834762403 CMS
ITI, Inc. $3,325.0011/09/2021 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
06/30/2026830163963 CMS
ITI, Inc. $59.5211/09/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163967 CMS
Otsuka America Pharmaceutical, Inc. $10.1211/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762383 CMS
Otsuka America Pharmaceutical, Inc. $8.0011/05/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762387 CMS
Otsuka America Pharmaceutical, Inc. $132.1611/05/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762391 CMS
Otsuka America Pharmaceutical, Inc. $22.1111/04/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762379 CMS
Otsuka America Pharmaceutical, Inc. $8.0010/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762339 CMS
Otsuka America Pharmaceutical, Inc. $9.5010/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762343 CMS
Otsuka America Pharmaceutical, Inc. $133.2810/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762347 CMS
Otsuka America Pharmaceutical, Inc. $9.5010/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762351 CMS
Otsuka America Pharmaceutical, Inc. $8.0010/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762355 CMS
Otsuka America Pharmaceutical, Inc. $54.8810/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762359 CMS
Otsuka America Pharmaceutical, Inc. $25.7610/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762363 CMS
Otsuka America Pharmaceutical, Inc. $9.0010/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762367 CMS
Otsuka America Pharmaceutical, Inc. $9.0010/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762371 CMS
Otsuka America Pharmaceutical, Inc. $95.2010/29/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762375 CMS
Sunovion Pharmaceuticals Inc. $4.0210/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026821933605 CMS
Alkermes, Inc. $71.5410/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026818275885 CMS
ITI, Inc. $4,750.0010/27/2021 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
06/30/2026830163939 CMS
ITI, Inc. $213.9710/27/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163943 CMS
ITI, Inc. $171.1810/27/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163947 CMS
ITI, Inc. $87.6110/27/2021 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163951 CMS
ITI, Inc. $39.9610/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163955 CMS
ITI, Inc. $95.5510/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026830163959 CMS
ITI, Inc. $1,425.0010/21/2021 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
06/30/2026830163935 CMS
Otsuka America Pharmaceutical, Inc. $125.0010/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026834762335 CMS
Alkermes, Inc. $4.4910/20/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026818209569 CMS
Sunovion Pharmaceuticals Inc. $23.1510/19/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026821945427 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $169,814.27 357
PY2020 $76,705.14 171
PY2021 $104,823.77 147
PY2022 $260,718.35 392
PY2023 $430,137.56 551
PY2024 $513,937.50 640
PY2025 $580,474.15 715

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
CHARLES TUAN-TU S NGUYEN, NPI 1942380118. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1942380118.
APA 7
IndustryPayments. (2026). CHARLES TUAN-TU S NGUYEN, NPI 1942380118 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1942380118
Bluebook
CHARLES TUAN-TU S NGUYEN, NPI 1942380118, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1942380118.

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