MARK D NATHAN

Allopathic & Osteopathic Physicians|Internal Medicine|Interventional Cardiology WALNUT CREEK, CA NPI 1013947670

General Payments — all program years on this page

$217,010.31

  • Category: General Payments
  • Program years: PY2018–2021
  • Record count: 295
  • As of (CMS publication): 2026-01-23

Latest program year (PY2021): $38,528.31 across 41 records · disputed records: 0

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

How this figure is 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

Latest program year (PY2021) · sorted by reported total.

By paying entity

Latest program year (PY2021) · sorted by reported total.

By program year

Program yearAmountRecords
2018 $58,765.6881
2019 $96,586.92140
2020 $23,129.4033
2021 $38,528.3141

Records — PY2021 (41)

Record IDPaying entityAmountDate Nature of paymentDispute statusPublishedSource
763545972 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 03/25/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545974 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 04/23/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545976 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 05/21/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545978 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 05/21/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545980 Boehringer Ingelheim Pharmaceuticals, Inc. $3,375.00 07/28/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545982 Boehringer Ingelheim Pharmaceuticals, Inc. $384.01 07/28/2021 Travel and Lodging Undisputed 01/23/2026 View at CMS
763545984 Boehringer Ingelheim Pharmaceuticals, Inc. $3,150.00 10/21/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545986 Boehringer Ingelheim Pharmaceuticals, Inc. $1,265.87 09/28/2021 Travel and Lodging Undisputed 01/23/2026 View at CMS
763545988 Boehringer Ingelheim Pharmaceuticals, Inc. $120.89 09/28/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
763545990 Boehringer Ingelheim Pharmaceuticals, Inc. $36.00 10/21/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
763545992 Boehringer Ingelheim Pharmaceuticals, Inc. $86.44 10/21/2021 Travel and Lodging Undisputed 01/23/2026 View at CMS
763545994 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 10/21/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545996 Boehringer Ingelheim Pharmaceuticals, Inc. $2,475.00 10/28/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763545998 Boehringer Ingelheim Pharmaceuticals, Inc. $2,475.00 10/28/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763546000 Boehringer Ingelheim Pharmaceuticals, Inc. $123.57 10/13/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
763546002 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 10/28/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763546004 Boehringer Ingelheim Pharmaceuticals, Inc. $290.02 10/20/2021 Travel and Lodging Undisputed 01/23/2026 View at CMS
763546006 Boehringer Ingelheim Pharmaceuticals, Inc. $2,039.96 10/20/2021 Travel and Lodging Undisputed 01/23/2026 View at CMS
763546008 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 11/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763546010 Boehringer Ingelheim Pharmaceuticals, Inc. $1,687.50 11/04/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763546012 Boehringer Ingelheim Pharmaceuticals, Inc. $3,375.00 11/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763546014 Boehringer Ingelheim Pharmaceuticals, Inc. $19.08 10/20/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
763546016 Boehringer Ingelheim Pharmaceuticals, Inc. $900.00 11/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
763786520 Boehringer Ingelheim Pharmaceuticals, Inc. $123.89 10/07/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
818600523 Lilly USA, LLC $900.00 04/02/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
818608729 Lilly USA, LLC $1,350.00 09/15/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
818635327 Lilly USA, LLC $900.00 04/19/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
825585223 Amgen Inc. $20.48 06/08/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
826581923 Boehringer Ingelheim Pharmaceuticals, Inc. $116.00 10/20/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
826581925 Boehringer Ingelheim Pharmaceuticals, Inc. $2,700.00 11/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
826581927 Boehringer Ingelheim Pharmaceuticals, Inc. $61.75 11/04/2021 Travel and Lodging Undisputed 01/23/2026 View at CMS
826581929 Boehringer Ingelheim Pharmaceuticals, Inc. $103.55 10/21/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
826581931 Boehringer Ingelheim Pharmaceuticals, Inc. $61.44 11/04/2021 Travel and Lodging Undisputed 01/23/2026 View at CMS
826584299 Boehringer Ingelheim Pharmaceuticals, Inc. $1,687.50 11/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
829380869 AstraZeneca Pharmaceuticals LP $1,850.00 07/28/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
829491439 AstraZeneca Pharmaceuticals LP $99.92 05/19/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
829792633 AstraZeneca Pharmaceuticals LP $13.67 04/09/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
829842919 AstraZeneca Pharmaceuticals LP $100.00 03/10/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
830133623 AstraZeneca Pharmaceuticals LP $300.00 07/12/2021 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 View at CMS
837706795 Terumo Medical Corporation $14.92 03/23/2021 Food and Beverage Undisputed 01/23/2026 View at CMS
848708167 Merck Sharp & Dohme Corporation $21.85 06/10/2021 Food and Beverage Undisputed 01/23/2026 View at CMS

Provenance & corrections

  • Dataset: CMS Open Payments — General Payments
  • Source: CMS Open Payments dataset (bulk file)
  • Publisher of source data: Centers for Medicare & Medicaid Services
  • Generated from: OP_DTL_GNRL_PGYR2021_P01232026_01102026.csv

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