Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

MARK TAN

Allopathic & Osteopathic Physicians Family Medicine

NPI
1639755150
CMS profile
11531031
Location
LAS VEGAS, NV

General Payments · PY2023–2024

$780.79

  • Reported across 18 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$520.04

16 records · 0 disputed

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

How these totals are calculated
  • The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. 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 (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $520.04 16

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Bayer HealthCare Pharmaceuticals Inc. $298.22 10
Acerta Pharma LLC $155.75 2
Amgen Inc. $49.16 3
Exact Sciences Corporation $16.91 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2023 $260.75 2
PY2024 $520.04 16

Payment records · PY2024 (16)

Sorted by paying entity, then date · as published by CMS

Program year 2024 2023 Record-level detail is published for PY2024; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Amgen Inc. $17.14 09/11/2024 Food and Beverage Undisputed 01/23/2026 1117395860 CMS
Amgen Inc. $17.79 10/18/2024 Food and Beverage Undisputed 01/23/2026 1117395862 CMS
Amgen Inc. $14.23 11/20/2024 Food and Beverage Undisputed 01/23/2026 1117395864 CMS
AstraZeneca Pharmaceuticals LP $128.09 08/20/2024 Food and Beverage Undisputed 01/23/2026 1104683843 CMS
AstraZeneca Pharmaceuticals LP $27.66 08/27/2024 Food and Beverage Undisputed 01/23/2026 1104780588 CMS
Bayer Healthcare Pharmaceuticals Inc. $7.05 08/09/2024 Food and Beverage Undisputed 01/23/2026 1086095025 CMS
Bayer Healthcare Pharmaceuticals Inc. $6.90 08/23/2024 Food and Beverage Undisputed 01/23/2026 1086088889 CMS
Bayer Healthcare Pharmaceuticals Inc. $6.06 09/06/2024 Food and Beverage Undisputed 01/23/2026 1086092891 CMS
Bayer Healthcare Pharmaceuticals Inc. $121.79 09/07/2024 Food and Beverage Undisputed 01/23/2026 1086213337 CMS
Bayer Healthcare Pharmaceuticals Inc. $6.01 09/27/2024 Food and Beverage Undisputed 01/23/2026 1086088919 CMS
Bayer Healthcare Pharmaceuticals Inc. $6.82 10/11/2024 Food and Beverage Undisputed 01/23/2026 1086096037 CMS
Bayer Healthcare Pharmaceuticals Inc. $6.24 10/25/2024 Food and Beverage Undisputed 01/23/2026 1086086963 CMS
Bayer Healthcare Pharmaceuticals Inc. $121.83 11/21/2024 Food and Beverage Undisputed 01/23/2026 1086146277 CMS
Bayer Healthcare Pharmaceuticals Inc. $7.43 11/22/2024 Food and Beverage Undisputed 01/23/2026 1086085803 CMS
Bayer Healthcare Pharmaceuticals Inc. $8.09 12/19/2024 Food and Beverage Undisputed 01/23/2026 1086093093 CMS
Exact Sciences Corporation $16.91 10/14/2024 Food and Beverage Undisputed 01/23/2026 1114927710 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-01-23
Program years on this page
2023, 2024
Source files
Dataset page · Bulk file · PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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