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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

RICARDO A TAN

Allopathic & Osteopathic Physicians Allergy & Immunology Allergy

NPI
1255353629
CMS profile
193091
Location
LOS ANGELES, 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

$4,003.38

135 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
Food and Beverage $3,112.27 128
Travel and Lodging $860.31 5
Consulting Fee $15.80 1
Education $15.00 1

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
NOVARTIS PHARMACEUTICALS CORPORATION $1,251.64 16
CSL Behring $413.09 22
GENZYME CORPORATION $310.28 10
Regeneron Healthcare Solutions, Inc. $253.46 13
Acerta Pharma LLC $248.73 7
BioCryst US Sales Co., LLC $247.00 9
Ionis Pharmaceuticals, Inc. $199.96 9
PFIZER INC. $172.04 10
GlaxoSmithKline, LLC. $126.60 6
ARS Pharmaceuticals Operations, Inc. $112.35 5
Genentech USA, Inc. $98.54 4
Lilly USA, LLC $70.84 3
CYCLE PHARMACEUTICALS INC $69.87 2
Takeda Pharmaceuticals U.S.A., Inc. $69.68 3
Octapharma USA, Inc. $69.43 2
Greer Laboratories, Inc. $54.59 2
Pharming Healthcare, Inc. $52.97 2
ALK-Abello, Inc $42.64 2
Galderma Laboratories, L.P. $34.49 2
Organon LLC $25.85 2
Amgen Inc. $25.09 1
Hikma Pharmaceuticals USA $20.54 1
OptiNose US, Inc. $17.90 1
ADMA BioManufacturing LLC $15.80 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $4,134.94 80
PY2020 $1,654.40 76
PY2021 $2,257.30 93
PY2022 $1,797.64 75
PY2023 $2,043.49 93
PY2024 $2,203.20 104
PY2025 $4,003.38 135

Payment records · PY2025 (135)

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
Ionis Pharmaceuticals, Inc. $33.25 12/19/2025 Food and Beverage No dispute reported 06/30/2026 1246792557 CMS
Genentech USA, Inc. $25.75 12/17/2025 Food and Beverage No dispute reported 06/30/2026 1211574022 CMS
GlaxoSmithKline, LLC. $26.15 12/17/2025 Food and Beverage No dispute reported 06/30/2026 1191061778 CMS
CSL Behring $25.00 12/16/2025 Food and Beverage No dispute reported 06/30/2026 1232349698 CMS
ARS Pharmaceuticals Operations, Inc. $19.21 12/11/2025 Food and Beverage No dispute reported 06/30/2026 1245895014 CMS
ALK-Abello, Inc $23.62 12/10/2025 Food and Beverage No dispute reported 06/30/2026 1222416126 CMS
CSL Behring $33.34 12/10/2025 Food and Beverage No dispute reported 06/30/2026 1232349692 CMS
CSL Behring $8.16 12/10/2025 Food and Beverage No dispute reported 06/30/2026 1232349694 CMS
BioCryst US Sales Co., LLC $13.58 12/04/2025 Food and Beverage No dispute reported 06/30/2026 1222009356 CMS
Novartis Pharmaceuticals Corporation $25.00 12/03/2025 Food and Beverage No dispute reported 06/30/2026 1200417909 CMS
CSL Behring $6.71 12/02/2025 Food and Beverage No dispute reported 06/30/2026 1232349688 CMS
Cycle Pharmaceuticals Inc $33.88 11/21/2025 Food and Beverage No dispute reported 06/30/2026 1248900825 CMS
PFIZER INC. $9.63 11/20/2025 Food and Beverage No dispute reported 06/30/2026 1229308804 CMS
GlaxoSmithKline, LLC. $28.25 11/19/2025 Food and Beverage No dispute reported 06/30/2026 1190972734 CMS
Octapharma USA, Inc. $38.77 11/18/2025 Food and Beverage No dispute reported 06/30/2026 1245084091 CMS
BioCryst US Sales Co., LLC $25.92 11/17/2025 Food and Beverage No dispute reported 06/30/2026 1222023166 CMS
Ionis Pharmaceuticals, Inc. $8.61 11/17/2025 Food and Beverage No dispute reported 06/30/2026 1246792555 CMS
PFIZER INC. $26.06 11/11/2025 Food and Beverage No dispute reported 06/30/2026 1229306996 CMS
CSL Behring $13.85 11/10/2025 Food and Beverage No dispute reported 06/30/2026 1232349684 CMS
CSL Behring $6.35 11/08/2025 Food and Beverage No dispute reported 06/30/2026 1232349682 CMS
Pharming Healthcare, Inc. $25.04 11/05/2025 Food and Beverage No dispute reported 06/30/2026 1200803856 CMS
Ionis Pharmaceuticals, Inc. $28.59 11/04/2025 Food and Beverage No dispute reported 06/30/2026 1246792553 CMS
PFIZER INC. $9.25 11/01/2025 Food and Beverage No dispute reported 06/30/2026 1229785938 CMS
GENZYME CORPORATION $44.30 10/31/2025 Food and Beverage No dispute reported 06/30/2026 1233271259 CMS
Novartis Pharmaceuticals Corporation $31.79 10/31/2025 Food and Beverage No dispute reported 06/30/2026 1200389244 CMS
Novartis Pharmaceuticals Corporation $30.24 10/29/2025 Food and Beverage No dispute reported 06/30/2026 1200389242 CMS
PFIZER INC. $23.09 10/27/2025 Food and Beverage No dispute reported 06/30/2026 1229405122 CMS
Regeneron Healthcare Solutions, Inc. $25.85 10/27/2025 Food and Beverage No dispute reported 06/30/2026 1213055866 CMS
Novartis Pharmaceuticals Corporation $25.79 10/22/2025 Food and Beverage No dispute reported 06/30/2026 1200389256 CMS
AstraZeneca Pharmaceuticals LP $21.08 10/20/2025 Food and Beverage No dispute reported 06/30/2026 1206351479 CMS
Regeneron Healthcare Solutions, Inc. $37.60 10/15/2025 Food and Beverage No dispute reported 06/30/2026 1213055864 CMS
Novartis Pharmaceuticals Corporation $27.71 10/10/2025 Food and Beverage No dispute reported 06/30/2026 1200389234 CMS
Ionis Pharmaceuticals, Inc. $11.47 10/09/2025 Food and Beverage No dispute reported 06/30/2026 1246792551 CMS
Novartis Pharmaceuticals Corporation $24.07 10/08/2025 Food and Beverage No dispute reported 06/30/2026 1200389236 CMS
ALK-Abello, Inc $19.02 10/06/2025 Food and Beverage No dispute reported 06/30/2026 1222416124 CMS
Lilly USA, LLC $24.16 10/03/2025 Food and Beverage No dispute reported 06/30/2026 1186845941 CMS
AstraZeneca Pharmaceuticals LP $19.24 10/01/2025 Food and Beverage No dispute reported 06/30/2026 1206398811 CMS
Ionis Pharmaceuticals, Inc. $32.68 09/30/2025 Food and Beverage No dispute reported 06/30/2026 1246792549 CMS
Novartis Pharmaceuticals Corporation $396.82 09/26/2025 Travel and Lodging No dispute reported 06/30/2026 1200389262 CMS
Novartis Pharmaceuticals Corporation $219.39 09/26/2025 Food and Beverage No dispute reported 06/30/2026 1200389264 CMS
Novartis Pharmaceuticals Corporation $282.48 09/26/2025 Travel and Lodging No dispute reported 06/30/2026 1200389266 CMS
Novartis Pharmaceuticals Corporation $40.37 09/26/2025 Travel and Lodging No dispute reported 06/30/2026 1200389268 CMS
GENZYME CORPORATION $44.30 09/24/2025 Food and Beverage No dispute reported 06/30/2026 1233271157 CMS
Ionis Pharmaceuticals, Inc. $31.71 09/19/2025 Food and Beverage No dispute reported 06/30/2026 1246792547 CMS
Cycle Pharmaceuticals Inc $35.99 09/17/2025 Food and Beverage No dispute reported 06/30/2026 1248900823 CMS
Galderma Laboratories, L.P. $15.56 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1234709378 CMS
BioCryst US Sales Co., LLC $38.73 09/15/2025 Food and Beverage No dispute reported 06/30/2026 1222005757 CMS
Regeneron Healthcare Solutions, Inc. $11.54 09/11/2025 Food and Beverage No dispute reported 06/30/2026 1213055862 CMS
AstraZeneca Pharmaceuticals LP $25.78 09/10/2025 Food and Beverage No dispute reported 06/30/2026 1206388627 CMS
Regeneron Healthcare Solutions, Inc. $22.16 09/10/2025 Food and Beverage No dispute reported 06/30/2026 1213055860 CMS
AstraZeneca Pharmaceuticals LP $21.28 09/09/2025 Food and Beverage No dispute reported 06/30/2026 1206263799 CMS
GENZYME CORPORATION $24.30 09/09/2025 Food and Beverage No dispute reported 06/30/2026 1233271176 CMS
Lilly USA, LLC $27.41 08/29/2025 Food and Beverage No dispute reported 06/30/2026 1186905680 CMS
Genentech USA, Inc. $20.41 08/26/2025 Food and Beverage No dispute reported 06/30/2026 1211574018 CMS
Ionis Pharmaceuticals, Inc. $11.04 08/25/2025 Food and Beverage No dispute reported 06/30/2026 1246792545 CMS
Novartis Pharmaceuticals Corporation $26.95 08/25/2025 Food and Beverage No dispute reported 06/30/2026 1200389232 CMS
GENZYME CORPORATION $30.80 08/20/2025 Food and Beverage No dispute reported 06/30/2026 1233271123 CMS
Regeneron Healthcare Solutions, Inc. $7.23 08/20/2025 Food and Beverage No dispute reported 06/30/2026 1213055858 CMS
Ionis Pharmaceuticals, Inc. $6.69 08/18/2025 Food and Beverage No dispute reported 06/30/2026 1246792543 CMS
Amgen Inc. $25.09 08/15/2025 Food and Beverage No dispute reported 06/30/2026 1228290227 CMS
PFIZER INC. $15.09 08/15/2025 Food and Beverage No dispute reported 06/30/2026 1229157300 CMS
Ionis Pharmaceuticals, Inc. $35.92 08/13/2025 Food and Beverage No dispute reported 06/30/2026 1246792541 CMS
GlaxoSmithKline, LLC. $20.61 08/12/2025 Food and Beverage No dispute reported 06/30/2026 1190981507 CMS
Optinose US, Inc. $17.90 08/11/2025 Food and Beverage No dispute reported 06/30/2026 1163256480 CMS
CSL Behring $9.09 08/09/2025 Food and Beverage No dispute reported 06/30/2026 1232349678 CMS
CSL Behring $26.96 08/06/2025 Food and Beverage No dispute reported 06/30/2026 1232349676 CMS
CSL Behring $32.32 08/05/2025 Food and Beverage No dispute reported 06/30/2026 1232349674 CMS
Greer Laboratories, Inc. $28.34 08/04/2025 Food and Beverage No dispute reported 06/30/2026 1240086241 CMS
PFIZER INC. $31.54 07/18/2025 Food and Beverage No dispute reported 06/30/2026 1229024283 CMS
PFIZER INC. $19.48 07/18/2025 Food and Beverage No dispute reported 06/30/2026 1229269231 CMS
CSL Behring $33.28 07/17/2025 Food and Beverage No dispute reported 06/30/2026 1232349672 CMS
BioCryst US Sales Co., LLC $30.18 07/14/2025 Food and Beverage No dispute reported 06/30/2026 1222016225 CMS
CSL Behring $16.61 07/11/2025 Food and Beverage No dispute reported 06/30/2026 1232349668 CMS
GENZYME CORPORATION $39.01 07/11/2025 Food and Beverage No dispute reported 06/30/2026 1233271100 CMS
Lilly USA, LLC $19.27 07/09/2025 Food and Beverage No dispute reported 06/30/2026 1186864827 CMS
CSL Behring $14.88 07/02/2025 Food and Beverage No dispute reported 06/30/2026 1232349660 CMS
Novartis Pharmaceuticals Corporation $25.20 07/02/2025 Food and Beverage No dispute reported 06/30/2026 1200389230 CMS
BioCryst US Sales Co., LLC $28.56 06/30/2025 Food and Beverage No dispute reported 06/30/2026 1222019747 CMS
ARS Pharmaceuticals Operations, Inc. $22.03 06/14/2025 Food and Beverage No dispute reported 06/30/2026 1245895012 CMS
CSL Behring $15.97 06/11/2025 Food and Beverage No dispute reported 06/30/2026 1232349656 CMS
Greer Laboratories, Inc. $26.25 06/11/2025 Food and Beverage No dispute reported 06/30/2026 1240086239 CMS
Novartis Pharmaceuticals Corporation $21.03 06/04/2025 Food and Beverage No dispute reported 06/30/2026 1200389218 CMS
Takeda Pharmaceuticals U.S.A., Inc. $19.83 06/03/2025 Food and Beverage No dispute reported 06/30/2026 1223855797 CMS
BioCryst US Sales Co., LLC $24.91 05/30/2025 Food and Beverage No dispute reported 06/30/2026 1222016221 CMS
Genentech USA, Inc. $24.74 05/29/2025 Food and Beverage No dispute reported 06/30/2026 1211574014 CMS
GENZYME CORPORATION $29.44 05/28/2025 Food and Beverage No dispute reported 06/30/2026 1233271057 CMS
CSL Behring $15.00 05/27/2025 Education No dispute reported 06/30/2026 1232349632 CMS
Hikma Pharmaceuticals USA $20.54 05/23/2025 Food and Beverage No dispute reported 06/30/2026 1248217133 CMS
CSL Behring $34.20 05/20/2025 Food and Beverage No dispute reported 06/30/2026 1232349654 CMS
BioCryst US Sales Co., LLC $29.25 05/15/2025 Food and Beverage No dispute reported 06/30/2026 1222019743 CMS
Novartis Pharmaceuticals Corporation $24.59 05/14/2025 Food and Beverage No dispute reported 06/30/2026 1200385214 CMS
Regeneron Healthcare Solutions, Inc. $6.20 05/14/2025 Food and Beverage No dispute reported 06/30/2026 1213055856 CMS
PFIZER INC. $8.63 05/06/2025 Food and Beverage No dispute reported 06/30/2026 1231711462 CMS
Regeneron Healthcare Solutions, Inc. $36.54 05/01/2025 Food and Beverage No dispute reported 06/30/2026 1213055852 CMS
Regeneron Healthcare Solutions, Inc. $1.72 05/01/2025 Food and Beverage No dispute reported 06/30/2026 1213055854 CMS
Novartis Pharmaceuticals Corporation $25.19 04/25/2025 Food and Beverage No dispute reported 06/30/2026 1200389228 CMS
GENZYME CORPORATION $24.52 04/23/2025 Food and Beverage No dispute reported 06/30/2026 1233271034 CMS
ADMA BioManufacturing LLC $15.80 04/15/2025 Consulting Fee No dispute reported 06/30/2026 1211423004 CMS
CSL Behring $23.99 04/11/2025 Food and Beverage No dispute reported 06/30/2026 1232349650 CMS
Regeneron Healthcare Solutions, Inc. $23.71 04/09/2025 Food and Beverage No dispute reported 06/30/2026 1213055850 CMS
BioCryst US Sales Co., LLC $24.14 04/08/2025 Food and Beverage No dispute reported 06/30/2026 1222012786 CMS
ARS Pharmaceuticals Operations, Inc. $17.44 04/02/2025 Food and Beverage No dispute reported 06/30/2026 1245895010 CMS
Regeneron Healthcare Solutions, Inc. $10.78 03/27/2025 Food and Beverage No dispute reported 06/30/2026 1213055846 CMS
Regeneron Healthcare Solutions, Inc. $7.67 03/27/2025 Food and Beverage No dispute reported 06/30/2026 1213055848 CMS
Takeda Pharmaceuticals U.S.A., Inc. $24.94 03/27/2025 Food and Beverage No dispute reported 06/30/2026 1223895620 CMS
Genentech USA, Inc. $27.64 03/20/2025 Food and Beverage No dispute reported 06/30/2026 1211574008 CMS
GENZYME CORPORATION $34.74 03/19/2025 Food and Beverage No dispute reported 06/30/2026 1233271025 CMS
PFIZER INC. $21.64 03/19/2025 Food and Beverage No dispute reported 06/30/2026 1230060355 CMS
Organon LLC $5.71 03/15/2025 Food and Beverage No dispute reported 06/30/2026 1237679672 CMS
AstraZeneca Pharmaceuticals LP $62.64 03/14/2025 Travel and Lodging No dispute reported 06/30/2026 1206616505 CMS
AstraZeneca Pharmaceuticals LP $78.00 03/14/2025 Travel and Lodging No dispute reported 06/30/2026 1206682553 CMS
Galderma Laboratories, L.P. $18.93 03/14/2025 Food and Beverage No dispute reported 06/30/2026 1234709376 CMS
GENZYME CORPORATION $14.61 03/13/2025 Food and Beverage No dispute reported 06/30/2026 1233271009 CMS
CSL Behring $26.91 03/10/2025 Food and Beverage No dispute reported 06/30/2026 1232349644 CMS
Regeneron Healthcare Solutions, Inc. $28.76 03/07/2025 Food and Beverage No dispute reported 06/30/2026 1213055844 CMS
CSL Behring $28.41 03/05/2025 Food and Beverage No dispute reported 06/30/2026 1232349642 CMS
Octapharma USA, Inc. $30.66 03/04/2025 Food and Beverage No dispute reported 06/30/2026 1245084089 CMS
AstraZeneca Pharmaceuticals LP $20.71 02/26/2025 Food and Beverage No dispute reported 06/30/2026 1206488616 CMS
GlaxoSmithKline, LLC. $14.10 02/25/2025 Food and Beverage No dispute reported 06/30/2026 1191255122 CMS
BioCryst US Sales Co., LLC $31.73 02/24/2025 Food and Beverage No dispute reported 06/30/2026 1222002377 CMS
CSL Behring $14.02 02/21/2025 Food and Beverage No dispute reported 06/30/2026 1232349640 CMS
Regeneron Healthcare Solutions, Inc. $33.70 02/20/2025 Food and Beverage No dispute reported 06/30/2026 1213055842 CMS
CSL Behring $12.48 02/19/2025 Food and Beverage No dispute reported 06/30/2026 1232349638 CMS
CSL Behring $13.05 02/14/2025 Food and Beverage No dispute reported 06/30/2026 1232349636 CMS
Novartis Pharmaceuticals Corporation $25.02 02/14/2025 Food and Beverage No dispute reported 06/30/2026 1200389216 CMS
ARS Pharmaceuticals Operations, Inc. $26.18 02/12/2025 Food and Beverage No dispute reported 06/30/2026 1245895008 CMS
Organon LLC $20.14 02/07/2025 Food and Beverage No dispute reported 06/30/2026 1237679674 CMS
GlaxoSmithKline, LLC. $15.83 02/06/2025 Food and Beverage No dispute reported 06/30/2026 1190834369 CMS
CSL Behring $2.51 02/05/2025 Food and Beverage No dispute reported 06/30/2026 1232349634 CMS
GENZYME CORPORATION $24.26 02/05/2025 Food and Beverage No dispute reported 06/30/2026 1233271002 CMS
PFIZER INC. $7.63 01/23/2025 Food and Beverage No dispute reported 06/30/2026 1231570980 CMS
ARS Pharmaceuticals Operations, Inc. $27.49 01/21/2025 Food and Beverage No dispute reported 06/30/2026 1245895006 CMS
Pharming Healthcare, Inc. $27.93 01/17/2025 Food and Beverage No dispute reported 06/30/2026 1200803854 CMS
GlaxoSmithKline, LLC. $21.66 01/13/2025 Food and Beverage No dispute reported 06/30/2026 1190632185 CMS
Takeda Pharmaceuticals U.S.A., Inc. $24.91 01/07/2025 Food and Beverage No dispute reported 06/30/2026 1223895404 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-1255353629

Plain
RICARDO A TAN, NPI 1255353629. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1255353629.
APA 7
IndustryPayments. (2026). RICARDO A TAN, NPI 1255353629 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1255353629
Bluebook
RICARDO A TAN, NPI 1255353629, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1255353629.

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