Payment overview · 2025
General Payments
$17,944.63
120 reported records · 12 companies
Healthcare provider profile · identity verified
Gautam Samadder, MD
Allopathic & Osteopathic Physicians|Internal Medicine|Sleep Medicine · COLUMBUS, OH · NPI 1033231188
Verified facts
What the public records show
CMS Open Payments records show Gautam Samadder, MD received $17,944.63 in general payments during 2025 across 120 reported records.
Lilly USA, LLC accounted for 80.7% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 12 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Wakix, Xywav.
HARMONY BIOSCIENCES 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 WAKIX as an associated drug or biological on 20652 records involving 6156 distinct recipient NPIs. Public Medicare Part D data also shows 62 claims for Wakix by this doctor in 2024.
JAZZ 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 XYREM as an associated drug or biological on 613 records involving 589 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Xyrem by this doctor in 2024.
JAZZ 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 XYWAV as an associated drug or biological on 19511 records involving 5343 distinct recipient NPIs. Public Medicare Part D data also shows 164 claims for Xywav 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 |
|---|---|---|---|---|---|
| Lilly USA, LLC | Unresolved — no canonical attribution shown | $14,480.59 | 80.7% | 15 | 2025 |
| Avadel CNS Pharmaceuticals, LLC | Unresolved — no canonical attribution shown | $1,297.12 | 7.2% | 25 | 2025 |
| Inspire Medical Systems, Inc. | Unresolved — no canonical attribution shown | $867.90 | 4.8% | 18 | 2025 |
| JAZZ PHARMACEUTICALS INC. | Unresolved — no canonical attribution shown | $725.55 | 4.0% | 29 | 2025 |
| Axsome Therapeutics, Inc. | Unresolved — no canonical attribution shown | $235.61 | 1.3% | 16 | 2025 |
| HARMONY BIOSCIENCES LLC | Unresolved — no canonical attribution shown | $214.73 | 1.2% | 11 | 2025 |
| 3B Medical, Inc. | Unresolved — no canonical attribution shown | $24.36 | 0.1% | 1 | 2025 |
| Fisher & Paykel Healthcare Inc | Unresolved — no canonical attribution shown | $22.49 | 0.1% | 1 | 2025 |
| Verona Pharma, Inc. | Unresolved — no canonical attribution shown | $22.21 | 0.1% | 1 | 2025 |
| INOGEN, INC. | Unresolved — no canonical attribution shown | $20.66 | 0.1% | 1 | 2025 |
| IRONWOOD PHARMACEUTICALS, INC | Unresolved — no canonical attribution shown | $18.09 | 0.1% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $15.32 | 0.1% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $14,125.00 | 8 |
| Food and Beverage | $2,999.63 | 111 |
| Consulting Fee | $820.00 | 1 |
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 |
|---|---|---|---|---|---|
| ZEPBOUND Normalized: zepbound |
Drug | Lilly USA, LLC | $14,480.59 | 15 | 2025 |
Source payment records
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| LUMRYZ Normalized: lumryz |
Drug | Avadel CNS Pharmaceuticals, LLC | $1,297.12 | 25 | 2025 |
Source payment records
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| INSPIRE Normalized: inspire |
Device | Inspire Medical Systems, Inc. | $867.90 | 18 | 2025 |
Source payment records
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| XYWAV Normalized: xywav |
Drug | JAZZ PHARMACEUTICALS INC. | $595.44 | 28 | 2025 |
Source payment records
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| Sunosi Normalized: sunosi |
Drug | Axsome Therapeutics, Inc. | $235.61 | 16 | 2025 |
Source payment records
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| WAKIX Normalized: wakix |
Drug | HARMONY BIOSCIENCES LLC | $214.73 | 11 | 2025 |
Source payment records
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| LUNA Normalized: luna |
Device | 3B Medical, Inc. | $24.36 | 1 | 2025 |
Source payment records
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| FISHER & PAYKEL HEALTHCARE Normalized: fisher paykel healthcare |
Device | Fisher & Paykel Healthcare Inc | $22.49 | 1 | 2025 |
Source payment records
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| Ohtuvayre Normalized: ohtuvayre |
Drug | Verona Pharma, Inc. | $22.21 | 1 | 2025 |
Source payment records
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| INOGEN ONE G5 OXYGEN CONCENTRATOR - BLUETOOTH Normalized: inogen one g5 oxygen concentrator bluetooth |
Device | INOGEN, INC. | $20.66 | 1 | 2025 |
Source payment records
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| Linzess Normalized: linzess |
Drug | IRONWOOD PHARMACEUTICALS, INC | $18.09 | 1 | 2025 |
Source payment records
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| AIRSUPRA Normalized: airsupra |
Drug | AstraZeneca Pharmaceuticals LP | $15.32 | 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 |
|---|---|---|---|---|---|---|
| WAKIX wakix |
2025 | Wakix | 2024 | 62 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| XYWAV xywav |
2025 | Xywav | 2024 | 164 | 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 |
|---|---|---|---|---|---|---|
| HARMONY BIOSCIENCES LLC Exact reporting entity; no affiliate inference |
2025 | WAKIX open payments reported associated product |
CMS Open Payments — General Payments 20652 supporting records · 6156 recipient NPIs · example record 1222387076 |
Wakix · 2024 Exact normalized brand match · 1 Part D row |
62 | suppressed by CMS |
| JAZZ PHARMACEUTICALS INC. Exact reporting entity; no affiliate inference |
2025 | XYREM open payments reported associated product |
CMS Open Payments — General Payments 613 supporting records · 589 recipient NPIs · example record 1234298066 |
Xyrem · 2024 Exact normalized brand match · 1 Part D row |
18 | suppressed by CMS |
| JAZZ PHARMACEUTICALS INC. Exact reporting entity; no affiliate inference |
2025 | XYWAV open payments reported associated product |
CMS Open Payments — General Payments 19511 supporting records · 5343 recipient NPIs · example record 1234297700 |
Xywav · 2024 Exact normalized brand match · 1 Part D row |
164 | 20 |
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 |
|---|---|---|---|
| Zolpidem Tartrate | Zolpidem Tartrate | 332 | 237 |
| Xywav | Sodium,calcium,mag,pot Oxybate | 164 | 20 |
| Clonazepam | Clonazepam | 122 | 46 |
| Wakix | Pitolisant Hcl | 62 | suppressed |
| Armodafinil | Armodafinil | 57 | 19 |
| Modafinil | Modafinil | 42 | 12 |
| Zolpidem Tartrate Er | Zolpidem Tartrate | 41 | 12 |
| Ropinirole Hcl | Ropinirole Hcl | 33 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 28 | suppressed |
| Gabapentin | Gabapentin | 26 | 12 |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 23 | 12 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 21 | suppressed |
| Breztri Aerosphere | Budesonide/Glycopyr/Formoterol | 21 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 20 | suppressed |
| Xyrem | Sodium Oxybate | 18 | suppressed |
| Methylphenidate Hcl | Methylphenidate Hcl | 17 | suppressed |
| Sodium Oxybate | Sodium Oxybate | 16 | suppressed |
| Eszopiclone | Eszopiclone | 14 | suppressed |
| Roflumilast | Roflumilast | 14 | suppressed |
| Zaleplon | Zaleplon | 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 | $17,944.63 · 120 records | Lilly USA, LLC | AIRSUPRA, FISHER & PAYKEL HEALTHCARE, INOGEN ONE G5 OXYGEN CONCENTRATOR - BLUETOOTH, INSPIRE, LUMRYZ, LUNA, Linzess, Ohtuvayre, Sunosi, WAKIX, XYWAV, ZEPBOUND | 3 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Wakix play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with HARMONY BIOSCIENCES LLC?
- 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