Covered recipient · General Payments record
KAMYAR ZADEH KALANTAR
Allopathic & Osteopathic Physicians Internal Medicine Nephrology
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General Payments · PY2021 · Entire year
$73,861.58
45 records · 0 disputed
“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”
— Centers for Medicare & Medicaid Services, Open Payments
A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.
These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.
A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.
How these totals are calculated
- This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. 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.
- Methodology & Data — sourcing, labeling, and limitations.
Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗
By nature of payment
PY2021 · entire year · sorted by reported total
| Nature of payment | Amount | Records |
|---|---|---|
| Consulting Fee | $50,654.62 | 23 |
| Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | $16,810.00 | 7 |
| Travel and Lodging | $3,421.49 | 7 |
| Honoraria | $2,408.00 | 1 |
| Food and Beverage | $567.47 | 7 |
By paying entity
PY2021 · entire year · sorted by reported total
| Paying entity | Amount | Records |
|---|---|---|
| Fresenius Kabi USA, LLC | $12,734.36 | 4 |
| NxStage Medical, Inc. | $10,192.41 | 12 |
| AKEBIA THERAPEUTICS INC | $7,040.00 | 3 |
| Daiichi Sankyo Inc. | $6,765.65 | 5 |
| AstraZeneca Pharmaceuticals LP | $5,835.00 | 4 |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $5,335.00 | 3 |
| Travere Therapeutics, Inc. | $5,000.00 | 1 |
| Fresenius USA Marketing, Inc. | $3,640.90 | 4 |
| Novo Nordisk AS | $3,520.00 | 1 |
| Novo Nordisk Inc | $3,080.00 | 1 |
| Vifor (International) Ltd. | $2,853.26 | 1 |
| Horizon Therapeutics plc | $2,505.00 | 3 |
| CSL Behring | $2,330.00 | 1 |
| SANOFI US SERVICES INC. | $1,830.00 | 1 |
| Vifor Pharma, Inc. | $1,200.00 | 1 |
Payment records · PY2021
Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them
General Payments · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30
45 matching records · $73,861.58 reported total · 0 disputed
Nature of payment: All payment types
Records imported here (UTC).
CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.
Showing records 1–45 of 45.
| Paying entity | Amount | Date | Nature of payment | Dispute status | Publication flags | Published | Record ID | Source |
|---|---|---|---|---|---|---|---|---|
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $1,610.00 | 12/21/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 844166285 | CMS |
| AstraZeneca Pharmaceuticals LP | $389.00 | 12/09/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 829851905 | CMS |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $2,720.00 | 12/08/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 844166281 | CMS |
| AKEBIA THERAPEUTICS INC | $2,360.00 | 12/01/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 855448757 | CMS |
| Vifor Pharma, Inc. | $1,200.00 | 12/01/2021 | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 816141133 | CMS |
| Fresenius USA Marketing, Inc. | $125.00 | 11/23/2021 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 849411235 | CMS |
| AKEBIA THERAPEUTICS INC | $2,360.00 | 11/19/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 855448753 | CMS |
| Novo Nordisk Inc | $3,080.00 | 11/18/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 811505079 | CMS |
| Daiichi Sankyo Inc. | $5,610.00 | 11/15/2021 | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 836326223 | CMS |
| Daiichi Sankyo Inc. | $107.92 | 11/11/2021 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 836350165 | CMS |
| Daiichi Sankyo Inc. | $369.80 | 11/11/2021 | Travel and Lodging | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 836351523 | CMS |
| Daiichi Sankyo Inc. | $425.80 | 11/11/2021 | Travel and Lodging | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 836351741 | CMS |
| Daiichi Sankyo Inc. | $252.13 | 11/11/2021 | Travel and Lodging | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 836351923 | CMS |
| Fresenius USA Marketing, Inc. | $515.90 | 11/11/2021 | Travel and Lodging | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 849411239 | CMS |
| Fresenius USA Marketing, Inc. | $2,000.00 | 10/26/2021 | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 849411231 | CMS |
| Fresenius USA Marketing, Inc. | $1,000.00 | 10/18/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 849411227 | CMS |
| Novo Nordisk AS | $3,520.00 | 10/14/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 811176483 | CMS |
| Horizon Therapeutics plc | $2,408.00 | 10/12/2021 | Honoraria | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 797155031 | CMS |
| Horizon Therapeutics plc | $48.50 | 10/12/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 797155033 | CMS |
| Horizon Therapeutics plc | $48.50 | 10/12/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 797155035 | CMS |
| CSL Behring | $2,330.00 | 09/13/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 820286785 | CMS |
| NxStage Medical, Inc. | $2,000.00 | 08/14/2021 | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 764792062 | CMS |
| NxStage Medical, Inc. | $19.87 | 08/13/2021 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621245 | CMS |
| NxStage Medical, Inc. | $1,383.60 | 08/13/2021 | Travel and Lodging | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621267 | CMS |
| Travere Therapeutics, Inc. | $5,000.00 | 08/11/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 849780069 | CMS |
| NxStage Medical, Inc. | $2,000.00 | 07/28/2021 | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 764791920 | CMS |
| NxStage Medical, Inc. | $17.84 | 07/28/2021 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621235 | CMS |
| NxStage Medical, Inc. | $17.84 | 07/28/2021 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621241 | CMS |
| NxStage Medical, Inc. | $129.35 | 07/28/2021 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621249 | CMS |
| NxStage Medical, Inc. | $224.38 | 07/28/2021 | Travel and Lodging | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621259 | CMS |
| NxStage Medical, Inc. | $2,000.00 | 07/27/2021 | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 764791944 | CMS |
| NxStage Medical, Inc. | $149.65 | 07/27/2021 | Food and Beverage | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621255 | CMS |
| NxStage Medical, Inc. | $2,000.00 | 07/26/2021 | Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 764792012 | CMS |
| NxStage Medical, Inc. | $249.88 | 07/26/2021 | Travel and Lodging | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 851621263 | CMS |
| Fresenius Kabi USA, LLC | $2,000.00 | 06/06/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 845609261 | CMS |
| Fresenius Kabi USA, LLC | $3,500.00 | 06/06/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 845609263 | CMS |
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $1,005.00 | 06/03/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 844166277 | CMS |
| AstraZeneca Pharmaceuticals LP | $1,556.00 | 05/27/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 829979075 | CMS |
| AstraZeneca Pharmaceuticals LP | $1,556.00 | 05/06/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 829976101 | CMS |
| Fresenius Kabi USA, LLC | $1,960.00 | 04/27/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 845609259 | CMS |
| AstraZeneca Pharmaceuticals LP | $2,334.00 | 04/26/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 829380129 | CMS |
| Fresenius Kabi USA, LLC | $5,274.36 | 04/01/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 845609265 | CMS |
| AKEBIA THERAPEUTICS INC | $2,320.00 | 03/23/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 855448751 | CMS |
| Vifor (International) Ltd. | $2,853.26 | 03/01/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 848400393 | CMS |
| SANOFI US SERVICES INC. | $1,830.00 | 01/04/2021 | Consulting Fee | No dispute reported | Delay: No Change: UNCHANGED | 06/30/2026 | 843511391 | CMS |
By program year
All program years on this page · sorted by year
Source & provenance
- Dataset
- CMS Open Payments — General Payments
- Publisher of source data
- Centers for Medicare & Medicaid Services
- CMS publication date
- 2026-06-30
- Program years on this page
- 2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
- Source files
- Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
- Generated from
- OP_DTL_GNRL_PGYR2025_P06302026_06032026.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.
Cite this record.
Permalink https://industrypayments.org/provider/npi-1457314684
- Plain
- KAMYAR ZADEH KALANTAR, NPI 1457314684. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1457314684.
- APA 7
- IndustryPayments. (2026). KAMYAR ZADEH KALANTAR, NPI 1457314684 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1457314684
- Bluebook
- KAMYAR ZADEH KALANTAR, NPI 1457314684, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1457314684.
Source: Centers for Medicare & Medicaid Services, Open Payments.