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

Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. 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 ↗

Covered recipient · General Payments record

GIGI QIQI CHEN

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1821073636
CMS profile
82179
Location
PLEASANT HILL, 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.

General Payments · PY2019–2025

  • CMS publication 2026-06-30

Latest program year · PY2025

$17,260.57

136 records · 0 disputed

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.
  • Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $12,498.75 9
Food and Beverage $3,088.10 123
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $1,620.00 1
Education $35.52 2
Travel and Lodging $18.20 1

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
Acerta Pharma LLC $4,534.80 11
E.R. Squibb & Sons, L.L.C. $2,732.63 10
ABBVIE INC. $2,520.07 9
PFIZER INC. $1,949.44 14
Genmab U.S., Inc. $1,896.78 5
GlaxoSmithKline, LLC. $1,579.97 7
Merck Sharp & Dohme Corporation $273.13 11
Daiichi Sankyo Inc. $232.97 12
NOVARTIS PHARMACEUTICALS CORPORATION $190.31 8
Janssen Biotech, Inc. $167.96 8
Adaptive Biotechnologies Corporation $137.39 1
Corcept Therapeutics $129.97 2
Bayer HealthCare Pharmaceuticals Inc. $96.90 4
Exelixis Inc. $95.94 3
SOBI, INC $94.70 4
Gilead Sciences, Inc. $71.76 4
SERVIER PHARMACEUTICALS LLC $63.57 2
Celgene Corporation $62.40 2
EISAI INC. $44.98 2
Takeda Pharmaceuticals U.S.A., Inc. $42.75 2
Incyte Corporation $42.26 2
Deciphera Pharmaceuticals Inc. $37.73 2
JAZZ PHARMACEUTICALS INC. $31.37 1
Lilly USA, LLC $30.10 1
ADC THERAPEUTICS AMERICA, INC. $29.47 1
SpringWorks Therapeutics, Inc. $27.68 1
GENZYME CORPORATION $24.40 1
Tempus AI, Inc $23.94 1
Syndax Pharmaceuticals, Inc. $21.30 1
Myriad Genetic Laboratories, Inc. $19.85 1
Alnylam Pharmaceuticals Inc. $19.44 1
Aadi Bioscience, Inc. $18.38 1
Astellas Pharma US Inc $16.23 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $28,339.09 113
PY2020 $10,003.50 54
PY2021 $8,424.46 52
PY2022 $22,138.75 61
PY2023 $13,653.99 130
PY2024 $6,492.66 61
PY2025 $17,260.57 136

Payment records · PY2025 (136)

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

Program year 2025 201920202021202220232024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
AstraZeneca Pharmaceuticals LP $34.64 12/18/2025 Food and Beverage No dispute reported 06/30/2026 1206954436 CMS
ABBVIE INC. $22.39 12/17/2025 Food and Beverage No dispute reported 06/30/2026 1201643037 CMS
Daiichi Sankyo Inc. $25.17 12/16/2025 Food and Beverage No dispute reported 06/30/2026 1197037919 CMS
PFIZER INC. $30.96 12/15/2025 Food and Beverage No dispute reported 06/30/2026 1230940211 CMS
Corcept Therapeutics $49.99 12/13/2025 Food and Beverage No dispute reported 06/30/2026 1223598823 CMS
Corcept Therapeutics $79.98 12/13/2025 Food and Beverage No dispute reported 06/30/2026 1223598825 CMS
Merck Sharp & Dohme LLC $18.21 12/12/2025 Food and Beverage No dispute reported 06/30/2026 1238237908 CMS
GlaxoSmithKline, LLC. $33.76 12/11/2025 Food and Beverage No dispute reported 06/30/2026 1191589800 CMS
Novartis Pharmaceuticals Corporation $34.10 12/08/2025 Food and Beverage No dispute reported 06/30/2026 1200072680 CMS
ABBVIE INC. $300.00 12/03/2025 Consulting Fee No dispute reported 06/30/2026 1201643035 CMS
ADC THERAPEUTICS AMERICA, INC. $29.47 12/03/2025 Food and Beverage No dispute reported 06/30/2026 1246128239 CMS
SOBI, INC $25.43 12/03/2025 Food and Beverage No dispute reported 06/30/2026 1240276677 CMS
Gilead Sciences, Inc. $12.42 12/02/2025 Education No dispute reported 06/30/2026 1234362323 CMS
Gilead Sciences, Inc. $20.41 12/02/2025 Food and Beverage No dispute reported 06/30/2026 1234524097 CMS
Eisai Inc. $24.08 12/01/2025 Food and Beverage No dispute reported 06/30/2026 1244480790 CMS
ABBVIE INC. $8.77 11/25/2025 Food and Beverage No dispute reported 06/30/2026 1201643033 CMS
AstraZeneca Pharmaceuticals LP $2,010.00 11/20/2025 Consulting Fee No dispute reported 06/30/2026 1206534814 CMS
GlaxoSmithKline, LLC. $24.17 11/19/2025 Food and Beverage No dispute reported 06/30/2026 1191361296 CMS
AstraZeneca Pharmaceuticals LP $335.00 11/14/2025 Consulting Fee No dispute reported 06/30/2026 1207065628 CMS
Daiichi Sankyo Inc. $26.80 11/11/2025 Food and Beverage No dispute reported 06/30/2026 1197010035 CMS
Genmab U.S., Inc. $18.20 11/08/2025 Travel and Lodging No dispute reported 06/30/2026 1235919870 CMS
Genmab U.S., Inc. $41.15 11/08/2025 Food and Beverage No dispute reported 06/30/2026 1235919872 CMS
Genmab U.S., Inc. $102.09 11/08/2025 Food and Beverage No dispute reported 06/30/2026 1235919874 CMS
Genmab U.S., Inc. $1,706.25 11/08/2025 Consulting Fee No dispute reported 06/30/2026 1235919876 CMS
PFIZER INC. $31.25 11/06/2025 Food and Beverage No dispute reported 06/30/2026 1231015242 CMS
Syndax Pharmaceuticals, Inc. $21.30 11/04/2025 Food and Beverage No dispute reported 06/30/2026 1238990430 CMS
ABBVIE INC. $16.25 10/30/2025 Food and Beverage No dispute reported 06/30/2026 1201643031 CMS
GlaxoSmithKline, LLC. $11.73 10/29/2025 Food and Beverage No dispute reported 06/30/2026 1191358352 CMS
PFIZER INC. $36.59 10/29/2025 Food and Beverage No dispute reported 06/30/2026 1230680188 CMS
Merck Sharp & Dohme LLC $18.64 10/28/2025 Food and Beverage No dispute reported 06/30/2026 1238237910 CMS
GlaxoSmithKline, LLC. $10.06 10/23/2025 Food and Beverage No dispute reported 06/30/2026 1190723810 CMS
Incyte Corporation $21.02 10/22/2025 Food and Beverage No dispute reported 06/30/2026 1226187630 CMS
Genmab U.S., Inc. $29.09 10/21/2025 Food and Beverage No dispute reported 06/30/2026 1235919868 CMS
AstraZeneca Pharmaceuticals LP $2,010.00 10/17/2025 Consulting Fee No dispute reported 06/30/2026 1206460797 CMS
ABBVIE INC. $2,100.00 10/16/2025 Consulting Fee No dispute reported 06/30/2026 1201643027 CMS
ABBVIE INC. $20.62 10/16/2025 Food and Beverage No dispute reported 06/30/2026 1201643029 CMS
Eisai Inc. $20.90 10/15/2025 Food and Beverage No dispute reported 06/30/2026 1244480788 CMS
Merck Sharp & Dohme LLC $27.30 10/14/2025 Food and Beverage No dispute reported 06/30/2026 1238180233 CMS
GlaxoSmithKline, LLC. $1,450.00 10/10/2025 Consulting Fee No dispute reported 06/30/2026 1190540029 CMS
Janssen Biotech, Inc. $24.74 10/08/2025 Food and Beverage No dispute reported 06/30/2026 1174746435 CMS
SERVIER PHARMACEUTICALS LLC $38.80 10/07/2025 Food and Beverage No dispute reported 06/30/2026 1229098038 CMS
AstraZeneca Pharmaceuticals LP $13.46 10/02/2025 Food and Beverage No dispute reported 06/30/2026 1206517288 CMS
PFIZER INC. $22.80 10/02/2025 Food and Beverage No dispute reported 06/30/2026 1230481110 CMS
Daiichi Sankyo Inc. $10.15 10/01/2025 Food and Beverage No dispute reported 06/30/2026 1197005367 CMS
Merck Sharp & Dohme LLC $26.59 09/30/2025 Food and Beverage No dispute reported 06/30/2026 1238273149 CMS
E.R. Squibb & Sons, L.L.C. $22.86 09/26/2025 Food and Beverage No dispute reported 06/30/2026 1184939145 CMS
E.R. Squibb & Sons, L.L.C. $0.96 09/26/2025 Food and Beverage No dispute reported 06/30/2026 1184939155 CMS
GlaxoSmithKline, LLC. $17.39 09/25/2025 Food and Beverage No dispute reported 06/30/2026 1190486177 CMS
SOBI, INC $24.20 09/23/2025 Food and Beverage No dispute reported 06/30/2026 1240276689 CMS
JAZZ PHARMACEUTICALS INC. $31.37 09/18/2025 Food and Beverage No dispute reported 06/30/2026 1234320941 CMS
Novartis Pharmaceuticals Corporation $33.48 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1200069688 CMS
Novartis Pharmaceuticals Corporation $22.89 09/11/2025 Food and Beverage No dispute reported 06/30/2026 1200069686 CMS
Novartis Pharmaceuticals Corporation $31.56 09/09/2025 Food and Beverage No dispute reported 06/30/2026 1200069690 CMS
Novartis Pharmaceuticals Corporation $1.41 09/09/2025 Food and Beverage No dispute reported 06/30/2026 1200069692 CMS
E.R. Squibb & Sons, L.L.C. $12.87 09/05/2025 Food and Beverage No dispute reported 06/30/2026 1184939147 CMS
Tempus AI, Inc $23.94 09/02/2025 Food and Beverage No dispute reported 06/30/2026 1250344794 CMS
Daiichi Sankyo Inc. $1.71 08/29/2025 Food and Beverage No dispute reported 06/30/2026 1197019509 CMS
Daiichi Sankyo Inc. $14.79 08/28/2025 Food and Beverage No dispute reported 06/30/2026 1197021649 CMS
AstraZeneca Pharmaceuticals LP $2.93 08/26/2025 Food and Beverage No dispute reported 06/30/2026 1206509634 CMS
AstraZeneca Pharmaceuticals LP $30.55 08/25/2025 Food and Beverage No dispute reported 06/30/2026 1206721899 CMS
Gilead Sciences, Inc. $21.07 08/21/2025 Food and Beverage No dispute reported 06/30/2026 1234517045 CMS
Janssen Biotech, Inc. $15.67 08/20/2025 Food and Beverage No dispute reported 06/30/2026 1174746225 CMS
Exelixis Inc. $33.23 08/19/2025 Food and Beverage No dispute reported 06/30/2026 1218794549 CMS
Astellas Pharma US Inc $16.23 08/14/2025 Food and Beverage No dispute reported 06/30/2026 1238652128 CMS
PFIZER INC. $21.27 08/07/2025 Food and Beverage No dispute reported 06/30/2026 1229503862 CMS
Takeda Pharmaceuticals U.S.A., Inc. $22.22 08/06/2025 Food and Beverage No dispute reported 06/30/2026 1223876020 CMS
Daiichi Sankyo Inc. $20.73 07/30/2025 Food and Beverage No dispute reported 06/30/2026 1197090843 CMS
Merck Sharp & Dohme LLC $32.05 07/29/2025 Food and Beverage No dispute reported 06/30/2026 1238316424 CMS
Janssen Biotech, Inc. $25.31 07/25/2025 Food and Beverage No dispute reported 06/30/2026 1174746081 CMS
E.R. Squibb & Sons, L.L.C. $23.34 07/24/2025 Food and Beverage No dispute reported 06/30/2026 1184939119 CMS
Daiichi Sankyo Inc. $28.28 07/23/2025 Food and Beverage No dispute reported 06/30/2026 1197017067 CMS
GlaxoSmithKline, LLC. $32.86 07/16/2025 Food and Beverage No dispute reported 06/30/2026 1190386540 CMS
Celgene Corporation $33.59 07/15/2025 Food and Beverage No dispute reported 06/30/2026 1184939123 CMS
E.R. Squibb & Sons, L.L.C. $1,150.00 07/14/2025 Consulting Fee No dispute reported 06/30/2026 1184939113 CMS
Merck Sharp & Dohme LLC $28.81 07/10/2025 Food and Beverage No dispute reported 06/30/2026 1238229746 CMS
Adaptive Biotechnologies Corporation $137.39 07/09/2025 Food and Beverage No dispute reported 06/30/2026 1254937369 CMS
SOBI, INC $25.98 07/09/2025 Food and Beverage No dispute reported 06/30/2026 1240276685 CMS
PFIZER INC. $28.12 07/08/2025 Food and Beverage No dispute reported 06/30/2026 1229431004 CMS
E.R. Squibb & Sons, L.L.C. $21.01 06/26/2025 Food and Beverage No dispute reported 06/30/2026 1184939099 CMS
Bayer Healthcare Pharmaceuticals Inc. $19.86 06/25/2025 Food and Beverage No dispute reported 06/30/2026 1225493262 CMS
Merck Sharp & Dohme LLC $23.45 06/24/2025 Food and Beverage No dispute reported 06/30/2026 1238358121 CMS
ABBVIE INC. $19.51 06/16/2025 Food and Beverage No dispute reported 06/30/2026 1201643025 CMS
Lilly USA, LLC $30.10 06/12/2025 Food and Beverage No dispute reported 06/30/2026 1186618964 CMS
PFIZER INC. $23.08 06/11/2025 Food and Beverage No dispute reported 06/30/2026 1229400143 CMS
AstraZeneca Pharmaceuticals LP $25.09 05/29/2025 Food and Beverage No dispute reported 06/30/2026 1206303161 CMS
Incyte Corporation $21.24 05/28/2025 Food and Beverage No dispute reported 06/30/2026 1226125011 CMS
Daiichi Sankyo Inc. $28.79 05/27/2025 Food and Beverage No dispute reported 06/30/2026 1197102707 CMS
Novartis Pharmaceuticals Corporation $14.76 05/15/2025 Food and Beverage No dispute reported 06/30/2026 1200069680 CMS
Exelixis Inc. $32.42 05/14/2025 Food and Beverage No dispute reported 06/30/2026 1218794547 CMS
Daiichi Sankyo Inc. $27.84 05/13/2025 Food and Beverage No dispute reported 06/30/2026 1197071285 CMS
SOBI, INC $19.09 05/12/2025 Food and Beverage No dispute reported 06/30/2026 1240276681 CMS
Novartis Pharmaceuticals Corporation $23.49 05/09/2025 Food and Beverage No dispute reported 06/30/2026 1200069682 CMS
Janssen Biotech, Inc. $24.29 05/08/2025 Food and Beverage No dispute reported 06/30/2026 1174746040 CMS
Bayer Healthcare Pharmaceuticals Inc. $31.49 05/06/2025 Food and Beverage No dispute reported 06/30/2026 1225493264 CMS
Janssen Biotech, Inc. $26.45 05/06/2025 Food and Beverage No dispute reported 06/30/2026 1174746501 CMS
E.R. Squibb & Sons, L.L.C. $21.98 05/01/2025 Food and Beverage No dispute reported 06/30/2026 1184939089 CMS
AstraZeneca Pharmaceuticals LP $23.10 04/29/2025 Education No dispute reported 06/30/2026 1206576766 CMS
Merck Sharp & Dohme LLC $22.03 04/29/2025 Food and Beverage No dispute reported 06/30/2026 1238141032 CMS
Myriad Genetic Laboratories, Inc. $19.85 04/28/2025 Food and Beverage No dispute reported 06/30/2026 1245402747 CMS
ABBVIE INC. $12.53 04/23/2025 Food and Beverage No dispute reported 06/30/2026 1201643023 CMS
PFIZER INC. $24.88 04/16/2025 Food and Beverage No dispute reported 06/30/2026 1229083220 CMS
PFIZER INC. $36.75 04/15/2025 Food and Beverage No dispute reported 06/30/2026 1229063872 CMS
Merck Sharp & Dohme LLC $22.91 04/03/2025 Food and Beverage No dispute reported 06/30/2026 1238091711 CMS
E.R. Squibb & Sons, L.L.C. $21.01 03/27/2025 Food and Beverage No dispute reported 06/30/2026 1184939081 CMS
Novartis Pharmaceuticals Corporation $28.62 03/26/2025 Food and Beverage No dispute reported 06/30/2026 1200069684 CMS
SERVIER PHARMACEUTICALS LLC $24.77 03/25/2025 Food and Beverage No dispute reported 06/30/2026 1229098029 CMS
Daiichi Sankyo Inc. $26.04 03/24/2025 Food and Beverage No dispute reported 06/30/2026 1197055287 CMS
Bayer Healthcare Pharmaceuticals Inc. $20.13 03/19/2025 Food and Beverage No dispute reported 06/30/2026 1225493266 CMS
Gilead Sciences, Inc. $17.86 03/18/2025 Food and Beverage No dispute reported 06/30/2026 1234550203 CMS
Deciphera Pharmaceuticals Inc. $18.85 03/17/2025 Food and Beverage No dispute reported 06/30/2026 1235958551 CMS
Exelixis Inc. $30.29 03/12/2025 Food and Beverage No dispute reported 06/30/2026 1218794545 CMS
Daiichi Sankyo Inc. $21.72 03/11/2025 Food and Beverage No dispute reported 06/30/2026 1197055209 CMS
Celgene Corporation $28.81 03/06/2025 Food and Beverage No dispute reported 06/30/2026 1184939063 CMS
Bayer Healthcare Pharmaceuticals Inc. $25.42 03/05/2025 Food and Beverage No dispute reported 06/30/2026 1225493260 CMS
ABBVIE INC. $20.00 03/04/2025 Food and Beverage No dispute reported 06/30/2026 1201643021 CMS
AstraZeneca Pharmaceuticals LP $21.85 02/26/2025 Food and Beverage No dispute reported 06/30/2026 1206649432 CMS
SpringWorks Therapeutics, Inc. $27.68 02/23/2025 Food and Beverage No dispute reported 06/30/2026 1232161151 CMS
PFIZER INC. $30.50 02/19/2025 Food and Beverage No dispute reported 06/30/2026 1228985624 CMS
Merck Sharp & Dohme LLC $24.50 02/18/2025 Food and Beverage No dispute reported 06/30/2026 1238270572 CMS
GENZYME CORPORATION $24.40 02/12/2025 Food and Beverage No dispute reported 06/30/2026 1233361420 CMS
Janssen Biotech, Inc. $25.71 02/05/2025 Food and Beverage No dispute reported 06/30/2026 1174746132 CMS
AstraZeneca Pharmaceuticals LP $28.18 01/30/2025 Food and Beverage No dispute reported 06/30/2026 1206356716 CMS
Daiichi Sankyo Inc. $0.95 01/30/2025 Food and Beverage No dispute reported 06/30/2026 1197074329 CMS
PFIZER INC. $1,620.00 01/29/2025 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 06/30/2026 1230498301 CMS
Aadi Bioscience, Inc. $18.38 01/27/2025 Food and Beverage No dispute reported 06/30/2026 1250852805 CMS
PFIZER INC. $24.92 01/23/2025 Food and Beverage No dispute reported 06/30/2026 1228950539 CMS
PFIZER INC. $0.14 01/22/2025 Food and Beverage No dispute reported 06/30/2026 1228972505 CMS
PFIZER INC. $18.18 01/22/2025 Food and Beverage No dispute reported 06/30/2026 1229197717 CMS
E.R. Squibb & Sons, L.L.C. $1,437.50 01/21/2025 Consulting Fee No dispute reported 06/30/2026 1184939049 CMS
Merck Sharp & Dohme LLC $28.64 01/21/2025 Food and Beverage No dispute reported 06/30/2026 1238180235 CMS
Takeda Pharmaceuticals U.S.A., Inc. $20.53 01/15/2025 Food and Beverage No dispute reported 06/30/2026 1223861946 CMS
E.R. Squibb & Sons, L.L.C. $21.10 01/14/2025 Food and Beverage No dispute reported 06/30/2026 1184939047 CMS
Deciphera Pharmaceuticals Inc. $18.88 01/10/2025 Food and Beverage No dispute reported 06/30/2026 1235958549 CMS
Janssen Biotech, Inc. $25.68 01/08/2025 Food and Beverage No dispute reported 06/30/2026 1174746001 CMS
Janssen Biotech, Inc. $0.11 01/08/2025 Food and Beverage No dispute reported 06/30/2026 1174746150 CMS
Alnylam Pharmaceuticals Inc. $19.44 01/07/2025 Food and Beverage No dispute reported 06/30/2026 1212773309 CMS

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
Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
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.

Permalink https://industrypayments.org/provider/npi-1821073636

Plain
GIGI QIQI CHEN, NPI 1821073636. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1821073636.
APA 7
IndustryPayments. (2026). GIGI QIQI CHEN, NPI 1821073636 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1821073636
Bluebook
GIGI QIQI CHEN, NPI 1821073636, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1821073636.

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