Payment overview · 2025
General Payments
$669.27
35 reported records · 13 companies
Healthcare provider profile · identity verified
Dennis Namphong Phan, MD
Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology · SALINAS, CA · NPI 1437238342
Verified facts
What the public records show
CMS Open Payments records show Dennis Namphong Phan, MD received $669.27 in general payments during 2025 across 35 reported records.
Calliditas Therapeutics US Inc. accounted for 25.9% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 16 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Jardiance, Velphoro, Veltassa.
AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 54 claims for Farxiga by this doctor in 2024.
Boehringer Ingelheim 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 79 claims for Jardiance by this doctor in 2024.
Fresenius USA Marketing, 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 VELPHORO as an associated drug or biological on 8763 records involving 2642 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Velphoro by this doctor in 2024.
Vifor Pharma, 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 Veltassa as an associated drug or biological on 5970 records involving 2480 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Veltassa 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 |
|---|---|---|---|---|---|
| Calliditas Therapeutics US Inc. | Unresolved — no canonical attribution shown | $173.07 | 25.9% | 12 | 2025 |
| Travere Therapeutics, Inc. | Unresolved — no canonical attribution shown | $114.26 | 17.1% | 5 | 2025 |
| Fresenius USA Marketing, Inc. | Unresolved — no canonical attribution shown | $80.26 | 12.0% | 4 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $76.29 | 11.4% | 4 | 2025 |
| Mallinckrodt Hospital Products Inc. | Unresolved — no canonical attribution shown | $46.36 | 6.9% | 2 | 2025 |
| Vifor Pharma, Inc. | Unresolved — no canonical attribution shown | $28.91 | 4.3% | 1 | 2025 |
| AKEBIA THERAPEUTICS INC | Unresolved — no canonical attribution shown | $27.39 | 4.1% | 1 | 2025 |
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $27.04 | 4.0% | 1 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $22.75 | 3.4% | 1 | 2025 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $22.11 | 3.3% | 1 | 2025 |
| Otsuka America Pharmaceutical, Inc. | Unresolved — no canonical attribution shown | $21.58 | 3.2% | 1 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $15.50 | 2.3% | 1 | 2025 |
| ANI Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $13.75 | 2.0% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $669.27 | 35 |
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 |
|---|---|---|---|---|---|
| TARPEYO Normalized: tarpeyo |
Drug | Calliditas Therapeutics US Inc. | $173.07 | 12 | 2025 |
Source payment records
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| VELPHORO Normalized: velphoro |
Drug | Fresenius USA Marketing, Inc. | $80.26 | 4 | 2025 |
Source payment records
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| ACTHAR Normalized: acthar |
Biological | Mallinckrodt Hospital Products Inc. | $46.36 | 2 | 2025 |
Source payment records
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| EVENITY Normalized: evenity |
Biological | Amgen Inc. | $42.72 | 2 | 2025 |
Source payment records
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| PROLIA Normalized: prolia |
Biological | Amgen Inc. | $42.72 | 2 | 2025 |
Source payment records
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| KRYSTEXXA Normalized: krystexxa |
Biological | Amgen Inc. | $33.57 | 2 | 2025 |
Source payment records
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| Veltassa Normalized: veltassa |
Drug | Vifor Pharma, Inc. | $28.91 | 1 | 2025 |
Source payment records
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| Auryxia Normalized: auryxia |
Drug | AKEBIA THERAPEUTICS INC | $27.39 | 1 | 2025 |
Source payment records
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| Vafseo Normalized: vafseo |
Drug | AKEBIA THERAPEUTICS INC | $27.39 | 1 | 2025 |
Source payment records
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| FARXIGA Normalized: farxiga |
Drug | AstraZeneca Pharmaceuticals LP | $27.04 | 1 | 2025 |
Source payment records
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| Fabhalta Normalized: fabhalta |
Drug | Novartis Pharmaceuticals Corporation | $22.75 | 1 | 2025 |
Source payment records
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| Vanrafia Normalized: vanrafia |
Drug | Novartis Pharmaceuticals Corporation | $22.75 | 1 | 2025 |
Source payment records
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| JARDIANCE Normalized: jardiance |
Drug | Boehringer Ingelheim Pharmaceuticals, Inc. | $22.11 | 1 | 2025 |
Source payment records
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| JYNARQUE Normalized: jynarque |
Drug | Otsuka America Pharmaceutical, Inc. | $21.58 | 1 | 2025 |
Source payment records
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| BENLYSTA Normalized: benlysta |
Biological | GlaxoSmithKline, LLC. | $15.50 | 1 | 2025 |
Source payment records
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| PURIFIED CORTROPHIN GEL Normalized: purified cortrophin gel |
Drug | ANI Pharmaceuticals, Inc. | $13.75 | 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 |
|---|---|---|---|---|---|---|
| FARXIGA farxiga |
2025 | Farxiga | 2024 | 54 | exact normalized | Medicare Part D |
| JARDIANCE jardiance |
2025 | Jardiance | 2024 | 79 | exact normalized | Medicare Part D |
| VELPHORO velphoro |
2025 | Velphoro | 2024 | 12 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| Veltassa veltassa |
2025 | Veltassa | 2024 | 23 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 company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP Exact reporting entity; no affiliate inference |
2025 | FARXIGA open payments reported associated product |
CMS Open Payments — General Payments 106133 supporting records · 42906 recipient NPIs · example record 1206131362 |
Farxiga · 2024 Exact normalized brand match · 1 Part D row |
54 | 16 |
| Boehringer Ingelheim Pharmaceuticals, Inc. Exact reporting entity; no affiliate inference |
2025 | JARDIANCE open payments reported associated product |
CMS Open Payments — General Payments 123636 supporting records · 49438 recipient NPIs · example record 1221811583 |
Jardiance · 2024 Exact normalized brand match · 1 Part D row |
79 | 20 |
| Fresenius USA Marketing, Inc. Exact reporting entity; no affiliate inference |
2025 | VELPHORO open payments reported associated product |
CMS Open Payments — General Payments 8763 supporting records · 2642 recipient NPIs · example record 1244803773 |
Velphoro · 2024 Exact normalized brand match · 1 Part D row |
12 | suppressed by CMS |
| Vifor Pharma, Inc. Exact reporting entity; no affiliate inference |
2025 | Veltassa open payments reported associated product |
CMS Open Payments — General Payments 5970 supporting records · 2480 recipient NPIs · example record 1172020739 |
Veltassa · 2024 Exact normalized brand match · 1 Part D row |
23 | 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
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 192 | 61 |
| Lisinopril | Lisinopril | 182 | 53 |
| Losartan Potassium | Losartan Potassium | 126 | 44 |
| Furosemide | Furosemide | 96 | 36 |
| Jardiance | Empagliflozin | 79 | 20 |
| Sevelamer Carbonate | Sevelamer Carbonate | 72 | 25 |
| Paricalcitol | Paricalcitol | 64 | 18 |
| Calcium Acetate | Calcium Acetate | 56 | 24 |
| Rayaldee | Calcifediol | 55 | 11 |
| Farxiga | Dapagliflozin Propanediol | 54 | 16 |
| Carvedilol | Carvedilol | 50 | 18 |
| Benazepril Hcl | Benazepril Hcl | 49 | 17 |
| Atenolol | Atenolol | 44 | suppressed |
| Doxercalciferol | Doxercalciferol | 44 | 17 |
| Hydralazine Hcl | Hydralazine Hcl | 39 | 15 |
| Atorvastatin Calcium | Atorvastatin Calcium | 38 | 12 |
| Bumetanide | Bumetanide | 33 | 15 |
| Hydrochlorothiazide | Hydrochlorothiazide | 33 | 11 |
| Metoprolol Succinate | Metoprolol Succinate | 33 | 12 |
| Vitamin D2 | Ergocalciferol (Vitamin D2) | 32 | 11 |
| Calcitriol | Calcitriol | 30 | 11 |
| Glipizide Er | Glipizide | 29 | suppressed |
| Allopurinol | Allopurinol | 26 | suppressed |
| Terazosin Hcl | Terazosin Hcl | 26 | 13 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 23 | suppressed |
| Veltassa | Patiromer Calcium Sorbitex | 23 | suppressed |
| Gabapentin | Gabapentin | 21 | suppressed |
| Metoprolol Tartrate | Metoprolol Tartrate | 21 | suppressed |
| Kerendia | Finerenone | 19 | suppressed |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 19 | suppressed |
| Pantoprazole Sodium | Pantoprazole Sodium | 19 | suppressed |
| Valsartan | Valsartan | 18 | suppressed |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 17 | suppressed |
| Procrit | Epoetin Alfa | 15 | suppressed |
| Tamsulosin Hcl | Tamsulosin Hcl | 14 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 13 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 13 | suppressed |
| Famotidine | Famotidine | 12 | suppressed |
| Metformin Hcl | Metformin Hcl | 12 | suppressed |
| Simvastatin | Simvastatin | 12 | suppressed |
| Velphoro | Sucroferric Oxyhydroxide | 12 | suppressed |
| Metoclopramide Hcl | Metoclopramide Hcl | 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 | $669.27 · 35 records | Calliditas Therapeutics US Inc. | ACTHAR, Auryxia, BENLYSTA, EVENITY, FARXIGA, Fabhalta, JARDIANCE, JYNARQUE, KRYSTEXXA, PROLIA, PURIFIED CORTROPHIN GEL, TARPEYO, VELPHORO, Vafseo, Vanrafia, Veltassa | 4 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Farxiga play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with AstraZeneca Pharmaceuticals LP?
- 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