Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. 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 ↗

Covered recipient · General Payments record

MARC ZELKOWITZ

Allopathic & Osteopathic Physicians Internal Medicine Nephrology

NPI: 1609134576
CMS profile: 693991
Location: ENGLEWOOD, NJ

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

General Payments · PY2019–2025

CMS publication 2026-06-30

Latest program year · PY2025

$13,108.77

124 records · 0 disputed

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”
— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“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.
Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of payment	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	$11,000.00	7
Food and Beverage	$1,829.06	113
Travel and Lodging	$266.05	2
Education	$13.66	2

By paying entity

PY2025 · sorted by reported total

Paying entity	Amount	Records
Ardelyx, Inc.	$12,065.95	41
Amgen Inc.	$319.30	22
Relypsa, Inc.	$139.09	17
Retrophin, Inc.	$101.46	13
NOVARTIS PHARMACEUTICALS CORPORATION	$79.89	5
Boehringer Ingelheim Pharmaceuticals, Inc.	$78.59	5
Acerta Pharma LLC	$67.60	4
CALLIDITAS THERAPEUTICS US INC.	$45.38	3
Fresenius USA Marketing, Inc.	$42.72	3
Aurinia Pharma U.S., Inc.	$31.90	2
Bayer HealthCare Pharmaceuticals Inc.	$31.80	2
KYOWA KIRIN, INC.	$18.47	1
ANI Pharmaceuticals, Inc.	$16.33	1
AKEBIA THERAPEUTICS INC	$14.67	1
Otsuka Pharmaceutical Development & Commercialization, Inc.	$14.12	1
Mallinckrodt Hospital Products Inc.	$14.03	1
Novo Nordisk AS	$13.96	1
Renalytix AI, Inc.	$13.51	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$326.24	20
PY2020	$505.98	21
PY2021	$401.13	20
PY2022	$885.51	69
PY2023	$999.59	63
PY2024	$768.93	44
PY2025	$13,108.77	124

Payment records · PY2025 (124)

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

Program year 2025 2019 2020 2021 2022 2023 2024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.

Paying entity	Amount	Date	Nature of payment	Dispute status	Published	Record ID	Source
Fresenius USA Marketing, Inc.	$14.57	12/30/2025	Food and Beverage	No dispute reported	06/30/2026	1244809227	CMS
Amgen Inc.	$13.37	12/23/2025	Food and Beverage	No dispute reported	06/30/2026	1227173115	CMS
Ardelyx, Inc.	$2.61	12/16/2025	Food and Beverage	No dispute reported	06/30/2026	1247895090	CMS
AstraZeneca Pharmaceuticals LP	$14.52	12/16/2025	Food and Beverage	No dispute reported	06/30/2026	1206872668	CMS
Ardelyx, Inc.	$13.67	12/15/2025	Food and Beverage	No dispute reported	06/30/2026	1247895088	CMS
Travere Therapeutics, Inc.	$6.94	12/09/2025	Food and Beverage	No dispute reported	06/30/2026	1244422305	CMS
Travere Therapeutics, Inc.	$8.66	12/09/2025	Food and Beverage	No dispute reported	06/30/2026	1244422307	CMS
Vifor Pharma, Inc.	$5.10	12/02/2025	Food and Beverage	No dispute reported	06/30/2026	1172028811	CMS
Vifor Pharma, Inc.	$8.17	12/02/2025	Food and Beverage	No dispute reported	06/30/2026	1172028815	CMS
Amgen Inc.	$14.57	12/01/2025	Food and Beverage	No dispute reported	06/30/2026	1227173129	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$14.18	11/18/2025	Food and Beverage	No dispute reported	06/30/2026	1223070323	CMS
Otsuka Pharmaceutical Development & Commercialization, Inc.	$14.12	11/17/2025	Food and Beverage	No dispute reported	06/30/2026	1225327749	CMS
Travere Therapeutics, Inc.	$3.96	11/17/2025	Food and Beverage	No dispute reported	06/30/2026	1244422297	CMS
Travere Therapeutics, Inc.	$14.44	11/17/2025	Food and Beverage	No dispute reported	06/30/2026	1244422317	CMS
Ardelyx, Inc.	$66.09	11/13/2025	Food and Beverage	No dispute reported	06/30/2026	1247895084	CMS
Ardelyx, Inc.	$1,750.00	11/13/2025	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	06/30/2026	1247895086	CMS
Ardelyx, Inc.	$5.21	11/11/2025	Food and Beverage	No dispute reported	06/30/2026	1247895080	CMS
Ardelyx, Inc.	$11.50	11/11/2025	Food and Beverage	No dispute reported	06/30/2026	1247895082	CMS
Novartis Pharmaceuticals Corporation	$14.57	11/10/2025	Food and Beverage	No dispute reported	06/30/2026	1200447797	CMS
Ardelyx, Inc.	$128.34	11/06/2025	Food and Beverage	No dispute reported	06/30/2026	1247895074	CMS
Ardelyx, Inc.	$80.00	11/06/2025	Travel and Lodging	No dispute reported	06/30/2026	1247895076	CMS
Ardelyx, Inc.	$1,750.00	11/06/2025	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	06/30/2026	1247895078	CMS
Ardelyx, Inc.	$114.69	11/05/2025	Food and Beverage	No dispute reported	06/30/2026	1247895068	CMS
Ardelyx, Inc.	$186.05	11/05/2025	Travel and Lodging	No dispute reported	06/30/2026	1247895070	CMS
Ardelyx, Inc.	$1,750.00	11/05/2025	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	06/30/2026	1247895072	CMS
Vifor Pharma, Inc.	$5.55	11/04/2025	Food and Beverage	No dispute reported	06/30/2026	1172028805	CMS
Vifor Pharma, Inc.	$11.44	11/04/2025	Food and Beverage	No dispute reported	06/30/2026	1172028807	CMS
Amgen Inc.	$11.71	10/29/2025	Food and Beverage	No dispute reported	06/30/2026	1227173121	CMS
Ardelyx, Inc.	$750.00	10/27/2025	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	06/30/2026	1247895066	CMS
Ardelyx, Inc.	$3.97	10/23/2025	Food and Beverage	No dispute reported	06/30/2026	1247895062	CMS
Ardelyx, Inc.	$13.71	10/23/2025	Food and Beverage	No dispute reported	06/30/2026	1247895064	CMS
ANI Pharmaceuticals, Inc.	$16.33	10/21/2025	Food and Beverage	No dispute reported	06/30/2026	1248601665	CMS
Ardelyx, Inc.	$148.86	10/21/2025	Food and Beverage	No dispute reported	06/30/2026	1247895058	CMS
Ardelyx, Inc.	$1,750.00	10/21/2025	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	06/30/2026	1247895060	CMS
Amgen Inc.	$14.12	10/06/2025	Food and Beverage	No dispute reported	06/30/2026	1227173113	CMS
Amgen Inc.	$17.16	09/30/2025	Food and Beverage	No dispute reported	06/30/2026	1228530594	CMS
Ardelyx, Inc.	$13.02	09/25/2025	Food and Beverage	No dispute reported	06/30/2026	1247895054	CMS
Ardelyx, Inc.	$4.77	09/25/2025	Food and Beverage	No dispute reported	06/30/2026	1247895056	CMS
Amgen Inc.	$14.62	09/23/2025	Food and Beverage	No dispute reported	06/30/2026	1227173111	CMS
Bayer Healthcare Pharmaceuticals Inc.	$16.92	09/23/2025	Food and Beverage	No dispute reported	06/30/2026	1225921340	CMS
Travere Therapeutics, Inc.	$1.66	09/18/2025	Education	No dispute reported	06/30/2026	1244422293	CMS
Ardelyx, Inc.	$3.14	09/15/2025	Food and Beverage	No dispute reported	06/30/2026	1247895048	CMS
Ardelyx, Inc.	$1.67	09/15/2025	Food and Beverage	No dispute reported	06/30/2026	1247895050	CMS
Ardelyx, Inc.	$13.34	09/15/2025	Food and Beverage	No dispute reported	06/30/2026	1247895052	CMS
Novartis Pharmaceuticals Corporation	$15.89	09/12/2025	Food and Beverage	No dispute reported	06/30/2026	1200539874	CMS
Vifor Pharma, Inc.	$4.81	09/09/2025	Food and Beverage	No dispute reported	06/30/2026	1172028799	CMS
Vifor Pharma, Inc.	$9.97	09/09/2025	Food and Beverage	No dispute reported	06/30/2026	1172028801	CMS
Amgen Inc.	$16.78	09/08/2025	Food and Beverage	No dispute reported	06/30/2026	1228530604	CMS
Ardelyx, Inc.	$12.41	09/04/2025	Food and Beverage	No dispute reported	06/30/2026	1247895044	CMS
Ardelyx, Inc.	$4.06	09/04/2025	Food and Beverage	No dispute reported	06/30/2026	1247895046	CMS
Travere Therapeutics, Inc.	$4.93	09/02/2025	Food and Beverage	No dispute reported	06/30/2026	1244422299	CMS
Travere Therapeutics, Inc.	$13.36	09/02/2025	Food and Beverage	No dispute reported	06/30/2026	1244422315	CMS
Amgen Inc.	$6.20	08/27/2025	Food and Beverage	No dispute reported	06/30/2026	1227173107	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$19.24	08/26/2025	Food and Beverage	No dispute reported	06/30/2026	1223070321	CMS
Calliditas Therapeutics US Inc.	$17.06	08/21/2025	Food and Beverage	No dispute reported	06/30/2026	1235011215	CMS
Amgen Inc.	$19.05	08/19/2025	Food and Beverage	No dispute reported	06/30/2026	1228530590	CMS
Travere Therapeutics, Inc.	$5.41	08/15/2025	Food and Beverage	No dispute reported	06/30/2026	1244422301	CMS
Travere Therapeutics, Inc.	$9.66	08/15/2025	Food and Beverage	No dispute reported	06/30/2026	1244422309	CMS
Amgen Inc.	$14.12	08/14/2025	Food and Beverage	No dispute reported	06/30/2026	1227173105	CMS
Vifor Pharma, Inc.	$6.19	08/12/2025	Food and Beverage	No dispute reported	06/30/2026	1172028791	CMS
Vifor Pharma, Inc.	$10.46	08/12/2025	Food and Beverage	No dispute reported	06/30/2026	1172028793	CMS
Amgen Inc.	$18.11	08/11/2025	Food and Beverage	No dispute reported	06/30/2026	1228530592	CMS
Amgen Inc.	$14.09	08/04/2025	Food and Beverage	No dispute reported	06/30/2026	1227173109	CMS
Ardelyx, Inc.	$136.32	07/24/2025	Food and Beverage	No dispute reported	06/30/2026	1247895040	CMS
Ardelyx, Inc.	$1,750.00	07/24/2025	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	06/30/2026	1247895042	CMS
Amgen Inc.	$17.30	07/22/2025	Food and Beverage	No dispute reported	06/30/2026	1228530588	CMS
Ardelyx, Inc.	$12.35	07/21/2025	Food and Beverage	No dispute reported	06/30/2026	1247895036	CMS
Ardelyx, Inc.	$3.53	07/21/2025	Food and Beverage	No dispute reported	06/30/2026	1247895038	CMS
Novo Nordisk Inc	$13.96	07/15/2025	Food and Beverage	No dispute reported	06/30/2026	1188881485	CMS
Fresenius USA Marketing, Inc.	$14.12	07/08/2025	Food and Beverage	No dispute reported	06/30/2026	1244809229	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$15.59	07/01/2025	Food and Beverage	No dispute reported	06/30/2026	1223070319	CMS
AstraZeneca Pharmaceuticals LP	$13.76	06/24/2025	Food and Beverage	No dispute reported	06/30/2026	1206245408	CMS
Aurinia Pharma U.S., Inc.	$14.09	06/24/2025	Food and Beverage	No dispute reported	06/30/2026	1249407797	CMS
Amgen Inc.	$11.18	06/18/2025	Food and Beverage	No dispute reported	06/30/2026	1227173123	CMS
Vifor Pharma, Inc.	$3.94	06/18/2025	Food and Beverage	No dispute reported	06/30/2026	1172028779	CMS
Vifor Pharma, Inc.	$11.90	06/17/2025	Food and Beverage	No dispute reported	06/30/2026	1172028777	CMS
Travere Therapeutics, Inc.	$6.30	06/16/2025	Food and Beverage	No dispute reported	06/30/2026	1244422303	CMS
Travere Therapeutics, Inc.	$10.66	06/16/2025	Food and Beverage	No dispute reported	06/30/2026	1244422311	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$13.86	06/12/2025	Food and Beverage	No dispute reported	06/30/2026	1223070317	CMS
Ardelyx, Inc.	$16.24	06/10/2025	Food and Beverage	No dispute reported	06/30/2026	1247895032	CMS
Ardelyx, Inc.	$2.95	06/10/2025	Food and Beverage	No dispute reported	06/30/2026	1247895034	CMS
Bayer Healthcare Pharmaceuticals Inc.	$14.88	06/09/2025	Food and Beverage	No dispute reported	06/30/2026	1225921336	CMS
KYOWA KIRIN, INC.	$18.47	05/30/2025	Food and Beverage	No dispute reported	06/30/2026	1222111469	CMS
Vifor Pharma, Inc.	$14.32	05/20/2025	Food and Beverage	No dispute reported	06/30/2026	1172028743	CMS
Vifor Pharma, Inc.	$2.44	05/20/2025	Food and Beverage	No dispute reported	06/30/2026	1172028745	CMS
Vifor Pharma, Inc.	$12.00	05/20/2025	Education	No dispute reported	06/30/2026	1172028787	CMS
Novartis Pharmaceuticals Corporation	$13.56	05/19/2025	Food and Beverage	No dispute reported	06/30/2026	1200539872	CMS
Amgen Inc.	$17.22	05/13/2025	Food and Beverage	No dispute reported	06/30/2026	1228530598	CMS
Aurinia Pharma U.S., Inc.	$17.81	05/12/2025	Food and Beverage	No dispute reported	06/30/2026	1249426426	CMS
Ardelyx, Inc.	$3.27	05/06/2025	Food and Beverage	No dispute reported	06/30/2026	1247895026	CMS
Ardelyx, Inc.	$0.78	05/06/2025	Food and Beverage	No dispute reported	06/30/2026	1247895028	CMS
Ardelyx, Inc.	$12.88	05/06/2025	Food and Beverage	No dispute reported	06/30/2026	1247895030	CMS
Mallinckrodt Hospital Products Inc.	$14.03	05/05/2025	Food and Beverage	No dispute reported	06/30/2026	1212009683	CMS
AstraZeneca Pharmaceuticals LP	$15.71	04/22/2025	Food and Beverage	No dispute reported	06/30/2026	1206455162	CMS
Novartis Pharmaceuticals Corporation	$19.11	04/17/2025	Food and Beverage	No dispute reported	06/30/2026	1200539868	CMS
Calliditas Therapeutics US Inc.	$13.59	04/08/2025	Food and Beverage	No dispute reported	06/30/2026	1235011213	CMS
Amgen Inc.	$15.26	04/07/2025	Food and Beverage	No dispute reported	06/30/2026	1228530606	CMS
Ardelyx, Inc.	$1,500.00	04/02/2025	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	06/30/2026	1247895024	CMS
Renalytix AI, Inc.	$13.51	04/01/2025	Food and Beverage	No dispute reported	06/30/2026	1234872927	CMS
Amgen Inc.	$17.94	03/27/2025	Food and Beverage	No dispute reported	06/30/2026	1228530600	CMS
Calliditas Therapeutics US Inc.	$14.73	03/17/2025	Food and Beverage	No dispute reported	06/30/2026	1235011211	CMS
Amgen Inc.	$14.73	03/11/2025	Food and Beverage	No dispute reported	06/30/2026	1227173119	CMS
Travere Therapeutics, Inc.	$12.21	03/11/2025	Food and Beverage	No dispute reported	06/30/2026	1244422313	CMS
Travere Therapeutics, Inc.	$3.27	03/10/2025	Food and Beverage	No dispute reported	06/30/2026	1244422295	CMS
Amgen Inc.	$18.39	03/04/2025	Food and Beverage	No dispute reported	06/30/2026	1228530596	CMS
Ardelyx, Inc.	$15.00	03/03/2025	Food and Beverage	No dispute reported	06/30/2026	1247895020	CMS
Ardelyx, Inc.	$2.57	03/03/2025	Food and Beverage	No dispute reported	06/30/2026	1247895022	CMS
Vifor Pharma, Inc.	$10.74	02/26/2025	Food and Beverage	No dispute reported	06/30/2026	1172028721	CMS
Vifor Pharma, Inc.	$5.22	02/25/2025	Food and Beverage	No dispute reported	06/30/2026	1172028719	CMS
Amgen Inc.	$14.73	02/24/2025	Food and Beverage	No dispute reported	06/30/2026	1227173117	CMS
Amgen Inc.	$8.94	02/06/2025	Food and Beverage	No dispute reported	06/30/2026	1227173127	CMS
Ardelyx, Inc.	$16.12	02/04/2025	Food and Beverage	No dispute reported	06/30/2026	1247895016	CMS
Ardelyx, Inc.	$3.27	02/04/2025	Food and Beverage	No dispute reported	06/30/2026	1247895018	CMS
AKEBIA THERAPEUTICS INC	$14.67	01/28/2025	Food and Beverage	No dispute reported	06/30/2026	1241816052	CMS
Novartis Pharmaceuticals Corporation	$16.76	01/27/2025	Food and Beverage	No dispute reported	06/30/2026	1200539860	CMS
Vifor Pharma, Inc.	$14.16	01/21/2025	Food and Beverage	No dispute reported	06/30/2026	1172028707	CMS
Vifor Pharma, Inc.	$2.68	01/21/2025	Food and Beverage	No dispute reported	06/30/2026	1172028709	CMS
Ardelyx, Inc.	$3.04	01/20/2025	Food and Beverage	No dispute reported	06/30/2026	1247895010	CMS
Ardelyx, Inc.	$0.50	01/20/2025	Food and Beverage	No dispute reported	06/30/2026	1247895012	CMS
Ardelyx, Inc.	$10.02	01/20/2025	Food and Beverage	No dispute reported	06/30/2026	1247895014	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$15.72	01/16/2025	Food and Beverage	No dispute reported	06/30/2026	1223070315	CMS
AstraZeneca Pharmaceuticals LP	$23.61	01/14/2025	Food and Beverage	No dispute reported	06/30/2026	1206612202	CMS
Fresenius USA Marketing, Inc.	$14.03	01/14/2025	Food and Beverage	No dispute reported	06/30/2026	1244809225	CMS
Amgen Inc.	$9.71	01/09/2025	Food and Beverage	No dispute reported	06/30/2026	1227173125	CMS

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: 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-1609134576

Plain: MARC ZELKOWITZ, NPI 1609134576. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1609134576.
APA 7: IndustryPayments. (2026). MARC ZELKOWITZ, NPI 1609134576 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1609134576
Bluebook: MARC ZELKOWITZ, NPI 1609134576, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1609134576.

Source: Centers for Medicare & Medicaid Services, Open Payments.