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

DONALD S DIEFENDORF

Physician Assistants & Advanced Practice Nursing Providers Physician Assistant Medical

NPI
1437187002
CMS profile
10432669
Location
BALTIMORE, MD

General Payments · PY2021–2024

$1,959.97

  • Reported across 104 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$551.78

27 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 $551.78 27

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Novo Nordisk AS $158.03 8
Acerta Pharma LLC $102.98 5
ABBVIE INC. $77.50 3
Lilly USA, LLC $76.37 4
GlaxoSmithKline, LLC. $61.11 3
Merck Sharp & Dohme Corporation $53.77 3
Amgen Inc. $22.02 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2021 $434.58 24
PY2022 $453.89 26
PY2023 $519.72 27
PY2024 $551.78 27

Payment records · PY2024 (27)

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

Program year 2024 202120222023 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
ABBVIE INC. $19.38 01/11/2024 Food and Beverage Undisputed 01/23/2026 1107023062 CMS
ABBVIE INC. $31.02 08/14/2024 Food and Beverage Undisputed 01/23/2026 1107023064 CMS
ABBVIE INC. $27.10 11/05/2024 Food and Beverage Undisputed 01/23/2026 1107023066 CMS
Amgen Inc. $22.02 05/22/2024 Food and Beverage Undisputed 01/23/2026 1115575923 CMS
AstraZeneca Pharmaceuticals LP $25.12 02/09/2024 Food and Beverage Undisputed 01/23/2026 1104249937 CMS
AstraZeneca Pharmaceuticals LP $19.13 03/13/2024 Food and Beverage Undisputed 01/23/2026 1105850124 CMS
AstraZeneca Pharmaceuticals LP $20.54 04/10/2024 Food and Beverage Undisputed 01/23/2026 1105847619 CMS
AstraZeneca Pharmaceuticals LP $24.65 06/06/2024 Food and Beverage Undisputed 01/23/2026 1104700853 CMS
AstraZeneca Pharmaceuticals LP $13.54 11/13/2024 Food and Beverage Undisputed 01/23/2026 1104520790 CMS
GlaxoSmithKline, LLC. $23.66 03/28/2024 Food and Beverage Undisputed 01/23/2026 1116639486 CMS
GlaxoSmithKline, LLC. $14.62 05/08/2024 Food and Beverage Undisputed 01/23/2026 1116712045 CMS
GlaxoSmithKline, LLC. $22.83 11/19/2024 Food and Beverage Undisputed 01/23/2026 1116388044 CMS
Lilly USA, LLC $19.08 02/07/2024 Food and Beverage Undisputed 01/23/2026 1135624671 CMS
Lilly USA, LLC $18.35 05/15/2024 Food and Beverage Undisputed 01/23/2026 1135624669 CMS
Lilly USA, LLC $21.46 07/15/2024 Food and Beverage Undisputed 01/23/2026 1135573305 CMS
Lilly USA, LLC $17.48 07/23/2024 Food and Beverage Undisputed 01/23/2026 1135549497 CMS
Merck Sharp & Dohme LLC $19.67 04/11/2024 Food and Beverage Undisputed 01/23/2026 1141735697 CMS
Merck Sharp & Dohme LLC $18.03 07/29/2024 Food and Beverage Undisputed 01/23/2026 1141735575 CMS
Merck Sharp & Dohme LLC $16.07 10/07/2024 Food and Beverage Undisputed 01/23/2026 1141883534 CMS
Novo Nordisk Inc $22.86 01/26/2024 Food and Beverage Undisputed 01/23/2026 1100281038 CMS
Novo Nordisk Inc $13.32 01/30/2024 Food and Beverage Undisputed 01/23/2026 1100586140 CMS
Novo Nordisk Inc $17.38 04/05/2024 Food and Beverage Undisputed 01/23/2026 1100539146 CMS
Novo Nordisk Inc $18.56 05/28/2024 Food and Beverage Undisputed 01/23/2026 1100384169 CMS
Novo Nordisk Inc $20.99 07/17/2024 Food and Beverage Undisputed 01/23/2026 1100342968 CMS
Novo Nordisk Inc $21.37 08/07/2024 Food and Beverage Undisputed 01/23/2026 1100519589 CMS
Novo Nordisk Inc $18.18 08/09/2024 Food and Beverage Undisputed 01/23/2026 1100343344 CMS
Novo Nordisk Inc $25.37 10/02/2024 Food and Beverage Undisputed 01/23/2026 1100583928 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
2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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