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

GREGORY ANDREW HANISSIAN

Allopathic & Osteopathic Physicians Allergy & Immunology

NPI
1033216148
CMS profile
1880
Location
GERMANTOWN, TN

General Payments · PY2018–2024

$12,819.22

  • Reported across 603 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$1,748.76

82 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 $1,597.64 80
Education $151.12 2

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $1,755.26 81
PY2019 $2,060.52 81
PY2020 $1,494.74 72
PY2021 $1,842.53 100
PY2022 $2,138.72 101
PY2023 $1,778.69 86
PY2024 $1,748.76 82

Payment records · PY2024 (82)

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

Program year 2024 201820192020202120222023 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. $17.47 01/23/2024 Food and Beverage Undisputed 01/23/2026 1111593994 CMS
Amgen Inc. $15.84 07/31/2024 Food and Beverage Undisputed 01/23/2026 1111593996 CMS
Amgen Inc. $16.78 09/24/2024 Food and Beverage Undisputed 01/23/2026 1111593998 CMS
Amgen Inc. $26.53 12/09/2024 Food and Beverage Undisputed 01/23/2026 1111594000 CMS
AstraZeneca Pharmaceuticals LP $53.53 01/04/2024 Food and Beverage Undisputed 01/23/2026 1104555624 CMS
AstraZeneca Pharmaceuticals LP $16.18 02/22/2024 Food and Beverage Undisputed 01/23/2026 1104777336 CMS
AstraZeneca Pharmaceuticals LP $13.27 03/19/2024 Food and Beverage Undisputed 01/23/2026 1105558084 CMS
AstraZeneca Pharmaceuticals LP $18.19 03/25/2024 Food and Beverage Undisputed 01/23/2026 1105607747 CMS
AstraZeneca Pharmaceuticals LP $22.09 04/29/2024 Food and Beverage Undisputed 01/23/2026 1104607176 CMS
AstraZeneca Pharmaceuticals LP $14.79 05/20/2024 Food and Beverage Undisputed 01/23/2026 1105664322 CMS
AstraZeneca Pharmaceuticals LP $19.70 06/13/2024 Food and Beverage Undisputed 01/23/2026 1104678967 CMS
AstraZeneca Pharmaceuticals LP $23.03 07/11/2024 Food and Beverage Undisputed 01/23/2026 1104537178 CMS
AstraZeneca Pharmaceuticals LP $21.79 08/15/2024 Food and Beverage Undisputed 01/23/2026 1104314358 CMS
AstraZeneca Pharmaceuticals LP $22.85 08/19/2024 Food and Beverage Undisputed 01/23/2026 1105436275 CMS
AstraZeneca Pharmaceuticals LP $19.02 09/06/2024 Food and Beverage Undisputed 01/23/2026 1104528098 CMS
AstraZeneca Pharmaceuticals LP $16.48 09/25/2024 Food and Beverage Undisputed 01/23/2026 1105642180 CMS
AstraZeneca Pharmaceuticals LP $27.53 09/30/2024 Food and Beverage Undisputed 01/23/2026 1104591422 CMS
AstraZeneca Pharmaceuticals LP $23.11 10/17/2024 Food and Beverage Undisputed 01/23/2026 1104772776 CMS
AstraZeneca Pharmaceuticals LP $13.75 10/23/2024 Food and Beverage Undisputed 01/23/2026 1105857382 CMS
AstraZeneca Pharmaceuticals LP $21.58 11/05/2024 Food and Beverage Undisputed 01/23/2026 1105574838 CMS
AstraZeneca Pharmaceuticals LP $25.41 11/14/2024 Food and Beverage Undisputed 01/23/2026 1104702663 CMS
AstraZeneca Pharmaceuticals LP $16.16 11/20/2024 Food and Beverage Undisputed 01/23/2026 1104471232 CMS
AstraZeneca Pharmaceuticals LP $22.19 12/05/2024 Food and Beverage Undisputed 01/23/2026 1104670461 CMS
AstraZeneca Pharmaceuticals LP $25.55 12/10/2024 Food and Beverage Undisputed 01/23/2026 1105631791 CMS
Axsome Therapeutics, Inc. $20.80 12/03/2024 Food and Beverage Undisputed 01/23/2026 1148282935 CMS
Blueprint Medicines Corporation $19.00 04/10/2024 Food and Beverage Undisputed 01/23/2026 1147443833 CMS
CSL Behring $23.57 10/10/2024 Food and Beverage Undisputed 01/23/2026 1134644267 CMS
CSL Behring $28.10 11/07/2024 Food and Beverage Undisputed 01/23/2026 1134644289 CMS
Genentech USA, Inc. $18.67 01/09/2024 Food and Beverage Undisputed 01/23/2026 1133016457 CMS
Genentech USA, Inc. $17.42 03/05/2024 Food and Beverage Undisputed 01/23/2026 1133016482 CMS
Genentech USA, Inc. $14.05 03/26/2024 Food and Beverage Undisputed 01/23/2026 1133016461 CMS
Genentech USA, Inc. $15.33 05/02/2024 Food and Beverage Undisputed 01/23/2026 1133016465 CMS
Genentech USA, Inc. $18.01 05/28/2024 Food and Beverage Undisputed 01/23/2026 1133016470 CMS
Genentech USA, Inc. $17.96 06/19/2024 Food and Beverage Undisputed 01/23/2026 1133016478 CMS
Genentech USA, Inc. $31.48 07/23/2024 Food and Beverage Undisputed 01/23/2026 1133016474 CMS
Genentech USA, Inc. $18.07 08/27/2024 Food and Beverage Undisputed 01/23/2026 1133016486 CMS
Genentech USA, Inc. $29.68 10/22/2024 Food and Beverage Undisputed 01/23/2026 1133016490 CMS
Genentech USA, Inc. $27.36 11/19/2024 Food and Beverage Undisputed 01/23/2026 1133016498 CMS
Genentech USA, Inc. $23.49 12/18/2024 Food and Beverage Undisputed 01/23/2026 1133016494 CMS
GENZYME CORPORATION $32.49 01/11/2024 Food and Beverage Undisputed 01/23/2026 1139629637 CMS
GENZYME CORPORATION $30.03 03/12/2024 Food and Beverage Undisputed 01/23/2026 1139629653 CMS
GENZYME CORPORATION $16.66 05/07/2024 Food and Beverage Undisputed 01/23/2026 1139629685 CMS
GENZYME CORPORATION $11.14 06/18/2024 Food and Beverage Undisputed 01/23/2026 1139629695 CMS
GENZYME CORPORATION $27.87 06/26/2024 Food and Beverage Undisputed 01/23/2026 1139629699 CMS
GENZYME CORPORATION $26.96 07/30/2024 Food and Beverage Undisputed 01/23/2026 1139629711 CMS
GENZYME CORPORATION $29.51 09/10/2024 Food and Beverage Undisputed 01/23/2026 1139629735 CMS
GENZYME CORPORATION $28.45 10/29/2024 Food and Beverage Undisputed 01/23/2026 1139629771 CMS
GlaxoSmithKline, LLC. $17.01 02/20/2024 Food and Beverage Undisputed 01/23/2026 1115888089 CMS
GlaxoSmithKline, LLC. $1.73 03/28/2024 Food and Beverage Undisputed 01/23/2026 1116349450 CMS
GlaxoSmithKline, LLC. $1.38 04/01/2024 Food and Beverage Undisputed 01/23/2026 1116429650 CMS
GlaxoSmithKline, LLC. $18.41 05/07/2024 Food and Beverage Undisputed 01/23/2026 1116620511 CMS
GlaxoSmithKline, LLC. $3.20 05/20/2024 Food and Beverage Undisputed 01/23/2026 1116356579 CMS
GlaxoSmithKline, LLC. $0.23 05/20/2024 Food and Beverage Undisputed 01/23/2026 1116549649 CMS
GlaxoSmithKline, LLC. $20.37 06/18/2024 Food and Beverage Undisputed 01/23/2026 1115801258 CMS
GlaxoSmithKline, LLC. $23.74 06/25/2024 Food and Beverage Undisputed 01/23/2026 1116636920 CMS
GlaxoSmithKline, LLC. $3.06 07/19/2024 Food and Beverage Undisputed 01/23/2026 1116042130 CMS
GlaxoSmithKline, LLC. $15.85 08/21/2024 Food and Beverage Undisputed 01/23/2026 1116561370 CMS
GlaxoSmithKline, LLC. $23.71 09/24/2024 Food and Beverage Undisputed 01/23/2026 1116105241 CMS
GlaxoSmithKline, LLC. $18.55 11/26/2024 Food and Beverage Undisputed 01/23/2026 1116087769 CMS
GlaxoSmithKline, LLC. $29.04 12/18/2024 Food and Beverage Undisputed 01/23/2026 1116621493 CMS
Grifols USA, LLC $14.08 02/28/2024 Food and Beverage Undisputed 01/23/2026 1124712368 CMS
Grifols USA, LLC $17.48 04/09/2024 Food and Beverage Undisputed 01/23/2026 1124712366 CMS
Grifols USA, LLC $19.69 06/11/2024 Food and Beverage Undisputed 01/23/2026 1124712364 CMS
Grifols USA, LLC $15.22 10/08/2024 Food and Beverage Undisputed 01/23/2026 1124712370 CMS
Hikma Pharmaceuticals USA $19.08 11/25/2024 Food and Beverage Undisputed 01/23/2026 1127505286 CMS
Kedrion Biopharma, Inc. $17.21 12/11/2024 Food and Beverage Undisputed 01/23/2026 1125860787 CMS
Lilly USA, LLC $20.01 11/12/2024 Food and Beverage Undisputed 01/23/2026 1135013967 CMS
Novartis Pharmaceuticals Corporation $13.62 02/05/2024 Food and Beverage Undisputed 01/23/2026 1086888057 CMS
Novartis Pharmaceuticals Corporation $20.62 02/29/2024 Food and Beverage Undisputed 01/23/2026 1086888065 CMS
Novartis Pharmaceuticals Corporation $17.58 04/16/2024 Food and Beverage Undisputed 01/23/2026 1086888073 CMS
Novartis Pharmaceuticals Corporation $22.92 05/01/2024 Food and Beverage Undisputed 01/23/2026 1086888075 CMS
Novartis Pharmaceuticals Corporation $26.16 05/14/2024 Food and Beverage Undisputed 01/23/2026 1086888077 CMS
Novartis Pharmaceuticals Corporation $13.01 05/30/2024 Food and Beverage Undisputed 01/23/2026 1086888079 CMS
Novartis Pharmaceuticals Corporation $24.62 06/25/2024 Food and Beverage Undisputed 01/23/2026 1086888081 CMS
Novartis Pharmaceuticals Corporation $22.02 07/10/2024 Food and Beverage Undisputed 01/23/2026 1086888083 CMS
Novartis Pharmaceuticals Corporation $22.31 08/07/2024 Food and Beverage Undisputed 01/23/2026 1086888091 CMS
Novartis Pharmaceuticals Corporation $20.20 09/04/2024 Food and Beverage Undisputed 01/23/2026 1086888093 CMS
Novartis Pharmaceuticals Corporation $19.33 10/02/2024 Food and Beverage Undisputed 01/23/2026 1086888101 CMS
PFIZER INC. $21.80 04/30/2024 Food and Beverage Undisputed 01/23/2026 1131921433 CMS
Pharming Healthcare, Inc. $15.48 07/09/2024 Food and Beverage Undisputed 01/23/2026 1132149668 CMS
Regeneron Healthcare Solutions, Inc. $66.13 10/08/2024 Education Undisputed 01/23/2026 1114064522 CMS
SANOFI-AVENTIS U.S. LLC $84.99 10/15/2024 Education Undisputed 01/23/2026 1139629763 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
2018, 2019, 2020, 2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.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.