Payment overview · 2025
General Payments
$929.79
55 reported records · 15 companies
Healthcare provider profile · identity verified
Jeffrey Kenneth Klingenstein, MD
Allopathic & Osteopathic Physicians|Internal Medicine|Gastroenterology · ASTORIA, NY · NPI 1215948310
Verified facts
What the public records show
CMS Open Payments records show Jeffrey Kenneth Klingenstein, MD received $929.79 in general payments during 2025 across 55 reported records.
Salix Pharmaceuticals, a division of Bausch Health US, LLC accounted for 19.3% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 19 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Linzess, Ozempic, Voquezna, Xifaxan.
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 86 claims for Linzess 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 17 claims for Vemlidy by this doctor in 2024.
IRONWOOD PHARMACEUTICALS, 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 1209 records involving 1184 distinct recipient NPIs. Public Medicare Part D data also shows 86 claims for Linzess by this doctor in 2024.
Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Ozempic by this doctor in 2024.
PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 27 claims for Eliquis by this doctor in 2024.
Phathom Pharmaceuticals, 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 VOQUEZNA as an associated drug or biological on 90302 records involving 33442 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Voquezna by this doctor in 2024.
Salix Pharmaceuticals, a division of Bausch Health US, 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 TRULANCE as an associated drug or biological on 2652 records involving 1501 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Trulance by this doctor in 2024.
Salix Pharmaceuticals, a division of Bausch Health US, 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 XIFAXAN as an associated drug or biological on 101901 records involving 33018 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Xifaxan by this doctor in 2024.
These records do not establish that a payment influenced prescribing or medical care.
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 company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | Unresolved — no canonical attribution shown | $179.72 | 19.3% | 13 | 2025 |
| Madrigal Pharmaceuticals | Unresolved — no canonical attribution shown | $140.56 | 15.1% | 13 | 2025 |
| Novo Nordisk Inc | Unresolved — no canonical attribution shown | $110.88 | 11.9% | 5 | 2025 |
| Janssen Biotech, Inc. | Unresolved — no canonical attribution shown | $98.49 | 10.6% | 4 | 2025 |
| AnX Robotica Corp | Unresolved — no canonical attribution shown | $75.48 | 8.1% | 1 | 2025 |
| Phathom Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $57.21 | 6.2% | 6 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $54.65 | 5.9% | 3 | 2025 |
| Gilead Sciences, Inc. | Unresolved — no canonical attribution shown | $50.78 | 5.5% | 2 | 2025 |
| Ipsen Biopharmaceuticals, Inc | Unresolved — no canonical attribution shown | $36.76 | 4.0% | 2 | 2025 |
| Intra-Sana Laboratories | Unresolved — no canonical attribution shown | $25.97 | 2.8% | 1 | 2025 |
| Intercept Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $22.92 | 2.5% | 1 | 2025 |
| ABBVIE INC. | Unresolved — no canonical attribution shown | $21.17 | 2.3% | 1 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $20.32 | 2.2% | 1 | 2025 |
| IRONWOOD PHARMACEUTICALS, INC | Unresolved — no canonical attribution shown | $19.89 | 2.1% | 1 | 2025 |
| Ardelyx, Inc. | Unresolved — no canonical attribution shown | $14.99 | 1.6% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $929.79 | 55 |
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 product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| XIFAXAN Normalized: xifaxan |
Drug | Salix Pharmaceuticals, a division of Bausch Health US, LLC | $179.72 | 13 | 2025 |
Source payment records
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| REZDIFFRA Normalized: rezdiffra |
Drug | Madrigal Pharmaceuticals | $140.56 | 13 | 2025 |
Source payment records
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| TREMFYA Normalized: tremfya |
Drug | Janssen Biotech, Inc. | $98.49 | 4 | 2025 |
Source payment records
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| Ozempic Normalized: ozempic |
Drug | Novo Nordisk Inc | $93.33 | 4 | 2025 |
Source payment records
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| Rybelsus Normalized: rybelsus |
Drug | Novo Nordisk Inc | $93.33 | 4 | 2025 |
Source payment records
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| VOQUEZNA Normalized: voquezna |
Drug | Phathom Pharmaceuticals, Inc. | $57.21 | 6 | 2025 |
Source payment records
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| VELSIPITY Normalized: velsipity |
Drug | PFIZER INC. | $54.65 | 3 | 2025 |
Source payment records
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| XELJANZ Normalized: xeljanz |
Drug | PFIZER INC. | $54.65 | 3 | 2025 |
Source payment records
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| LINZESS Normalized: linzess |
Drug | ABBVIE INC., IRONWOOD PHARMACEUTICALS, INC | $41.06 | 2 | 2025 |
Source payment records
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| GLYCATE Normalized: glycate |
Drug | Intra-Sana Laboratories | $25.97 | 1 | 2025 |
Source payment records
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| RELTONE 200 MG Normalized: reltone 200 mg |
Drug | Intra-Sana Laboratories | $25.97 | 1 | 2025 |
Source payment records
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| RELTONE 400 MG Normalized: reltone 400 mg |
Drug | Intra-Sana Laboratories | $25.97 | 1 | 2025 |
Source payment records
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| OCALIVA Normalized: ocaliva |
Drug | Intercept Pharmaceuticals, Inc. | $22.92 | 1 | 2025 |
Source payment records
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| CREON Normalized: creon |
Drug | ABBVIE INC. | $21.17 | 1 | 2025 |
Source payment records
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| IQIRVO Normalized: iqirvo |
Drug | Ipsen Biopharmaceuticals, Inc | $21.10 | 1 | 2025 |
Source payment records
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| ENTYVIO Normalized: entyvio |
Biological | Takeda Pharmaceuticals U.S.A., Inc. | $20.32 | 1 | 2025 |
Source payment records
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| Wegovy Normalized: wegovy |
Drug | Novo Nordisk Inc | $17.55 | 1 | 2025 |
Source payment records
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| Bylvay Normalized: bylvay |
Drug | Ipsen Biopharmaceuticals, Inc | $15.66 | 1 | 2025 |
Source payment records
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| IBSRELA Normalized: ibsrela |
Drug | Ardelyx, Inc. | $14.99 | 1 | 2025 |
Source payment records
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* 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 product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| LINZESS linzess |
2025 | Linzess | 2024 | 86 | exact normalized | Medicare Part D |
| Ozempic ozempic |
2025 | Ozempic | 2024 | 13 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| VOQUEZNA voquezna |
2025 | Voquezna | 2024 | 13 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| XIFAXAN xifaxan |
2025 | Xifaxan | 2024 | 13 | 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 company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| 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 |
86 | 16 |
| 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 |
17 | suppressed by CMS |
| IRONWOOD PHARMACEUTICALS, INC Exact reporting entity; no affiliate inference |
2025 | Linzess open payments reported associated product |
CMS Open Payments — General Payments 1209 supporting records · 1184 recipient NPIs · example record 1227653589 |
Linzess · 2024 Exact normalized brand match · 1 Part D row |
86 | 16 |
| Novo Nordisk Inc Exact reporting entity; no affiliate inference |
2025 | Ozempic open payments reported associated product |
CMS Open Payments — General Payments 261625 supporting records · 77793 recipient NPIs · example record 1188130076 |
Ozempic · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| PFIZER INC. Exact reporting entity; no affiliate inference |
2025 | ELIQUIS open payments reported associated product |
CMS Open Payments — General Payments 87112 supporting records · 36032 recipient NPIs · example record 1228794063 |
Eliquis · 2024 Exact normalized brand match · 1 Part D row |
27 | suppressed by CMS |
| Phathom Pharmaceuticals, Inc. Exact reporting entity; no affiliate inference |
2025 | VOQUEZNA open payments reported associated product |
CMS Open Payments — General Payments 90302 supporting records · 33442 recipient NPIs · example record 1219216983 |
Voquezna · 2024 Exact normalized brand match · 1 Part D row |
13 | suppressed by CMS |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC Exact reporting entity; no affiliate inference |
2025 | TRULANCE open payments reported associated product |
CMS Open Payments — General Payments 2652 supporting records · 1501 recipient NPIs · example record 1231775445 |
Trulance · 2024 Exact normalized brand match · 1 Part D row |
18 | suppressed by CMS |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC Exact reporting entity; no affiliate inference |
2025 | XIFAXAN open payments reported associated product |
CMS Open Payments — General Payments 101901 supporting records · 33018 recipient NPIs · example record 1231775337 |
Xifaxan · 2024 Exact normalized brand match · 1 Part D row |
13 | 12 |
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
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Pantoprazole Sodium | Pantoprazole Sodium | 254 | 76 |
| Atorvastatin Calcium | Atorvastatin Calcium | 179 | 45 |
| Sod Sulf-Potass Sulf-Mag Sulf | Sodium, Potassium,mag Sulfates | 131 | 127 |
| Amlodipine Besylate | Amlodipine Besylate | 123 | 36 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 91 | 29 |
| Linzess | Linaclotide | 86 | 16 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 73 | 22 |
| Metoprolol Succinate | Metoprolol Succinate | 70 | 22 |
| Losartan Potassium | Losartan Potassium | 64 | 19 |
| Metformin Hcl | Metformin Hcl | 64 | 12 |
| Zolpidem Tartrate | Zolpidem Tartrate | 62 | suppressed |
| Famotidine | Famotidine | 52 | 21 |
| Tamsulosin Hcl | Tamsulosin Hcl | 45 | 11 |
| Levothyroxine Sodium | Levothyroxine Sodium | 44 | suppressed |
| Omeprazole | Omeprazole | 37 | 21 |
| Lisinopril | Lisinopril | 34 | suppressed |
| Ramipril | Ramipril | 34 | suppressed |
| Furosemide | Furosemide | 29 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 27 | suppressed |
| Eliquis | Apixaban | 27 | suppressed |
| Metoclopramide Hcl | Metoclopramide Hcl | 27 | suppressed |
| Hydrochlorothiazide | Hydrochlorothiazide | 25 | suppressed |
| Gabapentin | Gabapentin | 23 | suppressed |
| Prednisone | Prednisone | 21 | suppressed |
| Ezetimibe | Ezetimibe | 20 | suppressed |
| Simvastatin | Simvastatin | 20 | suppressed |
| Montelukast Sodium | Montelukast Sodium | 19 | suppressed |
| Chlorthalidone | Chlorthalidone | 18 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 18 | suppressed |
| Mounjaro | Tirzepatide | 18 | suppressed |
| Trulance | Plecanatide | 18 | suppressed |
| Janumet | Sitagliptin Phos/Metformin Hcl | 17 | suppressed |
| Jardiance | Empagliflozin | 17 | suppressed |
| Vemlidy | Tenofovir Alafenamide | 17 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 16 | suppressed |
| Movantik | Naloxegol Oxalate | 15 | suppressed |
| Zolpidem Tartrate Er | Zolpidem Tartrate | 15 | suppressed |
| Alprazolam | Alprazolam | 14 | suppressed |
| Diazepam | Diazepam | 14 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 14 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 13 | suppressed |
| Atenolol | Atenolol | 13 | suppressed |
| Fenofibric Acid | Fenofibric Acid (Choline) | 13 | suppressed |
| Lactulose | Lactulose | 13 | suppressed |
| Ozempic | Semaglutide | 13 | suppressed |
| Voquezna | Vonoprazan Fumarate | 13 | suppressed |
| Xifaxan | Rifaximin | 13 | 12 |
| Metformin Hcl Er | Metformin Hcl | 12 | suppressed |
| Metronidazole | Metronidazole | 12 | 11 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 12 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 12 | suppressed |
| Azathioprine | Azathioprine | 11 | suppressed |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 11 | suppressed |
| Mesalamine | Mesalamine | 11 | suppressed |
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.
| Year | General Payments | Main payer | Explicit products | Company overlaps | Part D coverage |
|---|---|---|---|---|---|
| 2025 | $929.79 · 55 records | Salix Pharmaceuticals, a division of Bausch Health US, LLC | Bylvay, CREON, ENTYVIO, GLYCATE, IBSRELA, IQIRVO, LINZESS, OCALIVA, Ozempic, RELTONE 200 MG, RELTONE 400 MG, REZDIFFRA, Rybelsus, TREMFYA, VELSIPITY, VOQUEZNA, Wegovy, XELJANZ, XIFAXAN | 8 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Linzess play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with ABBVIE INC.?
- Are there reasonable alternatives I should understand when we discuss treatment options?
- How should I interpret the industry-payment records shown here in the context of my care?
These are general questions generated from reviewed templates. They are not personalized medical advice.
Sources and limitations
How to read this page
- Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
- Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
- Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
- Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
- When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.
Loaded source releases
| Dataset | Year | Publication | Source |
|---|---|---|---|
| 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 |
Full methodology · Questions & answers · Report a possible error