Healthcare provider profile · identity verified

Brian Paul Riff, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology · ANAHEIM, CA · NPI 1194969030

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Brian Paul Riff, MD received $18,071.54 in general payments during 2025 across 149 reported records.

Phathom Pharmaceuticals, Inc. accounted for 65.1% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 26 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Creon, Ibsrela, Linzess, Rinvoq.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported CREON as an associated drug or biological on 91561 records involving 20616 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Creon by this doctor in 2024.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 116 claims for Linzess by this doctor in 2024.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported RINVOQ as an associated drug or biological on 279238 records involving 34343 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Rinvoq by this doctor in 2024.

Ardelyx, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported IBSRELA as an associated drug or biological on 59980 records involving 18215 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Ibsrela by this doctor in 2024.

Gilead Sciences, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Vemlidy as an associated drug or biological on 782 records involving 554 distinct recipient NPIs. Public Medicare Part D data also shows 31 claims for Vemlidy by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Mounjaro by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$18,071.54

149 reported records · 19 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $11,761.4265.1%202025
Olympus Medical Systems Corporation Unresolved — no canonical attribution shown $3,000.0016.6%32025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$952.755.3%62025
ABBVIE INC. Unresolved — no canonical attribution shown $678.373.8%542025
PFIZER INC. Unresolved — no canonical attribution shown $263.981.5%132025
Aimmune Therapeutics, Inc. Unresolved — no canonical attribution shown $200.371.1%72025
Ipsen Biopharmaceuticals, Inc Unresolved — no canonical attribution shown $181.611.0%42025
Ardelyx, Inc. Unresolved — no canonical attribution shown $180.071.0%102025
GENZYME CORPORATION Unresolved — no canonical attribution shown $177.731.0%42025
Lilly USA, LLC Unresolved — no canonical attribution shown $154.760.9%62025
Madrigal Pharmaceuticals Unresolved — no canonical attribution shown $144.170.8%92025
Mirum Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $130.680.7%12025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $110.830.6%52025
Intercept Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $33.540.2%22025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $26.630.1%12025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $21.880.1%12025
VIVUS LLC Unresolved — no canonical attribution shown $19.860.1%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $18.300.1%12025
Celltrion USA Inc. Unresolved — no canonical attribution shown $14.590.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$11,000.005
Food and Beverage$2,947.69130
Consulting Fee$2,571.432
Travel and Lodging$1,552.4212

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $11,761.42 20 2025
Source payment records
EVIS EXERA II ULTRASOUND GASTROVIDEOSCOPE
Normalized: evis exera ii ultrasound gastrovideoscope
Device Olympus Medical Systems Corporation $1,500.00 2 2025
Source payment records
EVIS EXERA III DUODENOVIDEOSCOPE
Normalized: evis exera iii duodenovideoscope
Device Olympus Medical Systems Corporation $1,500.00 1 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $645.52 50 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $446.17 44 2025
Source payment records
VELSIPITY
Normalized: velsipity
Drug PFIZER INC. $263.98 13 2025
Source payment records
XELJANZ
Normalized: xeljanz
Drug PFIZER INC. $217.61 11 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. $199.61 5 2025
Source payment records
IQIRVO
Normalized: iqirvo
Drug Ipsen Biopharmaceuticals, Inc $181.61 4 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $180.07 10 2025
Source payment records
ZENPEP
Normalized: zenpep
Drug Aimmune Therapeutics, Inc. $165.38 4 2025
Source payment records
OMVOH
Normalized: omvoh
Drug Lilly USA, LLC $145.60 5 2025
Source payment records
REZDIFFRA
Normalized: rezdiffra
Drug Madrigal Pharmaceuticals $144.17 9 2025
Source payment records
Livmarli
Normalized: livmarli
Drug Mirum Pharmaceuticals, Inc. $130.68 1 2025
Source payment records
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $110.83 5 2025
Source payment records
SIMPONI
Normalized: simponi
Biological Janssen Biotech, Inc. $72.26 3 2025
Source payment records
SIMPONI ARIA
Normalized: simponi aria
Biological Janssen Biotech, Inc. $72.26 3 2025
Source payment records
STELARA
Normalized: stelara
Biological Janssen Biotech, Inc. $72.26 3 2025
Source payment records
ENDOFLIP
Normalized: endoflip
Device Medtronic, Inc. $36.51 2 2025
Source payment records
VOWST
Normalized: vowst
Biological Aimmune Therapeutics, Inc. $34.99 3 2025
Source payment records
OCALIVA
Normalized: ocaliva
Drug Intercept Pharmaceuticals, Inc. $33.54 2 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $24.23 2 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $24.23 2 2025
Source payment records
QSYMIA
Normalized: qsymia
Drug VIVUS LLC $19.86 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $18.30 1 2025
Source payment records
VEGZELMA
Normalized: vegzelma
Biological Celltrion USA Inc. $14.59 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
CREON
creon
2025 Creon 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D
IBSRELA
ibsrela
2025 Ibsrela 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
LINZESS
linzess
2025 Linzess 2024 116 exact normalized Medicare Part D
RINVOQ
rinvoq
2025 Rinvoq 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 CREON
open payments reported associated product
CMS Open Payments — General Payments
91561 supporting records · 20616 recipient NPIs · example record 1201352608
Creon · 2024
Exact normalized brand match · 1 Part D row
21 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
116 24
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 RINVOQ
open payments reported associated product
CMS Open Payments — General Payments
279238 supporting records · 34343 recipient NPIs · example record 1201352600
Rinvoq · 2024
Exact normalized brand match · 1 Part D row
21 suppressed by CMS
Ardelyx, Inc.
Exact reporting entity; no affiliate inference
2025 IBSRELA
open payments reported associated product
CMS Open Payments — General Payments
59980 supporting records · 18215 recipient NPIs · example record 1247828901
Ibsrela · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Gilead Sciences, Inc.
Exact reporting entity; no affiliate inference
2025 Vemlidy
open payments reported associated product
CMS Open Payments — General Payments
782 supporting records · 554 recipient NPIs · example record 1234350906
Vemlidy · 2024
Exact normalized brand match · 1 Part D row
31 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
12 suppressed by CMS

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
OmeprazoleOmeprazole28595
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates192191
Pantoprazole SodiumPantoprazole Sodium16348
LinzessLinaclotide11624
FamotidineFamotidine6824
MesalamineMesalamine46suppressed
Dicyclomine HclDicyclomine Hcl4315
Ondansetron HclOndansetron Hcl4112
Esomeprazole MagnesiumEsomeprazole Magnesium39suppressed
LansoprazoleLansoprazole3816
UrsodiolUrsodiol31suppressed
VemlidyTenofovir Alafenamide31suppressed
Colestipol HclColestipol Hcl30suppressed
Metoclopramide HclMetoclopramide Hcl28suppressed
Dexlansoprazole DrDexlansoprazole27suppressed
Amitriptyline HclAmitriptyline Hcl25suppressed
LactuloseLactulose23suppressed
TrulancePlecanatide22suppressed
CreonLipase/Protease/Amylase21suppressed
FurosemideFurosemide21suppressed
MotegrityPrucalopride Succinate21suppressed
RinvoqUpadacitinib21suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine20suppressed
MirtazapineMirtazapine17suppressed
MovantikNaloxegol Oxalate16suppressed
PrednisonePrednisone16suppressed
XifaxanRifaximin16suppressed
SpironolactoneSpironolactone15suppressed
Nortriptyline HclNortriptyline Hcl14suppressed
Rabeprazole SodiumRabeprazole Sodium14suppressed
ClonazepamClonazepam12suppressed
Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl1212
MounjaroTirzepatide12suppressed
IbsrelaTenapanor Hcl11suppressed
Tramadol HclTramadol Hcl11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $18,071.54 · 149 records Phathom Pharmaceuticals, Inc. CREON, DUPIXENT, ENDOFLIP, EVIS EXERA II ULTRASOUND GASTROVIDEOSCOPE, EVIS EXERA III DUODENOVIDEOSCOPE, IBSRELA, IQIRVO, LINZESS, Livmarli, OCALIVA, OMVOH, QSYMIA, REZDIFFRA, RINVOQ, SIMPONI, SIMPONI ARIA, SKYRIZI, STELARA, TREMFYA, VEGZELMA, VELSIPITY, VOQUEZNA, VOWST, Wegovy, XELJANZ, ZENPEP 6
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error