Amphastar Pharmaceuticals, Inc.

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Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

Centers for Medicare & Medicaid Services, Open Payments

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.

Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.

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.

Payment records · PY2025

Date, newest first, then reporting company; values as published by CMS.

General Payments · PY2025 · All recipient types · CMS publication 2026-06-30

2,462 matching records · $46,730.86 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 2,462 matching records (CSV)

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 51–100 of 2,462.

Recipient Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
CHUNLIU GONG
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.7812/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223643976 CMS
SEVKET YIGIT
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.7812/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644448 CMS
EMILY ALEXANDRA LINDSAY
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.7912/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644892 CMS
WEDAD RAHMAN
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $21.8912/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223648715 CMS
LEI WENA GADON HERME
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.6212/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642922 CMS
CHRISTOPHER XU
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.6212/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642926 CMS
JULIE CROUSE
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.6212/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642946 CMS
DANIELA HERRERA
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.6212/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642954 CMS
LISA M MYERS
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $15.8912/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223643374 CMS
YSHAY SHLESINGER
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $20.5812/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644098 CMS
MARY KATHLEEN SULLIVAN
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $15.8912/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644442 CMS
REAGAN DENNY
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $18.7612/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644456 CMS
NIKITA FORGHANI
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $18.7512/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223645462 CMS
AHMET BAHADIR ERGIN
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.8712/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223640992 CMS
FALGUNI R VASA
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $20.5412/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223641212 CMS
MARY DEHERRERA CODO
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $20.5412/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223641220 CMS
ANNE C MAYNARD
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $20.5412/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223641318 CMS
ANITA BHAT
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $22.2412/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642794 CMS
HIRA ALI
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $14.0812/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642840 CMS
LEA KARLLA BERNABE RUBIO
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $22.2412/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642962 CMS
JIGNA PATEL
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $22.2412/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642966 CMS
FRANCES LEE JABLONSKI
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $14.0712/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223643838 CMS
RENEE BURR
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $14.0812/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644468 CMS
PETER G WILCOX
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $5.6212/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644734 CMS
PETER G WILCOX
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $11.8312/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644742 CMS
MARTIN SCHEAR
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.4112/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223646220 CMS
RONALD WATTS
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $21.3512/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223643598 CMS
DARNELLA CROWDER
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $21.3512/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644476 CMS
CARLENA PLUNKETT
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $21.3512/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644484 CMS
JANNA PRATER
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.7612/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223646346 CMS
SWATI VIJAYLAKSHMI ELCHURI
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $18.2712/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223640750 CMS
SHREYA R PARIKH
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $20.6112/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223641136 CMS
AMY E MCLAURIN
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.5112/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223641224 CMS
NORMAN S WELCH
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.4212/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223641938 CMS
BRUCE W BODE
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.4212/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223641946 CMS
ANJANI R PANDYA
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $20.6112/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642498 CMS
CARSON WOMACK
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.4212/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642536 CMS
JENNIFER A BACKUS
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.4212/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642564 CMS
ERICA BROOKE EIDSON
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.4212/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223642942 CMS
CHARALAMBOS DEMETRI
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.5112/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223643298 CMS
ALLISON MONTALBANO
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $20.6112/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644488 CMS
VANI DUVUURI
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $22.6412/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644656 CMS
CATHERINE BYERS HEFNER
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.5112/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223644847 CMS
HILLARY WRENN CAROTHERS SEIDENBERG
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $18.2712/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223645934 CMS
THERESA MILLER WILLIAMS
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $19.5112/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223646818 CMS
TARA MAMDOUHI
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $14.8812/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223647080 CMS
DAVID GERALD ROBERTSON
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.4212/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223647649 CMS
PETER IVES WARFIELD
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $14.8712/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223648313 CMS
LILY JOSEPH
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $14.8812/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223648381 CMS
ADRIANA SOFIA RUIZ
Physician / non-physician practitioner
Amphastar Pharmaceuticals, Inc. $24.4212/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261223648701 CMS

Practitioner overview · all loaded program years

2,111 providers listed 4,872 records General Payments

General Payments to practitioners — all loaded program years

  • Category: General Payments
  • Program years: 2022, 2023, 2024, 2025
  • Record count: 4,872
  • Providers listed: 2,111

Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.

Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.

Coverage: program years 2019–2025, General Payments only, reported to physicians and non-physician practitioners. Payments to teaching hospitals are not included in these practitioner figures. Each figure is labeled with its category and program year; categories are never combined.

Practitioner payments by program year

Program yearReportedRecordsProvidersDetail
PY2022 $650.00 1 1 This company in PY2022 →
PY2023 $18,317.68 248 225 This company in PY2023 →
PY2024 $41,335.88 2,161 1,339 This company in PY2024 →
PY2025 $46,730.86 2,462 1,237 This company in PY2025 →

By recipient specialty (68)

Sorted by name; identical names by identifier.

Allopathic & Osteopathic Physicians 48 specialties 1,259 providers
Nursing Service Providers 3 specialties 3 providers
Physician Assistants & Advanced Practice Nursing Providers 16 specialties 805 providers
Podiatric Medicine & Surgery Service Providers 1 specialty 3 providers

Providers listed (2,111)

Sorted by name; identical names by identifier.

ProviderSpecialtyStateRecords reported by this company
AAKASH RAJWANI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NY 1
AARON D BUSSEY Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TN 4
AARON J STOICK Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner SD 1
AARON N ROCKOFF Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CA 3
AARON WILKERSON Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family UT 1
AASHISH DESAI Allopathic & Osteopathic Physicians|Internal Medicine|Interventional Cardiology GA 1
ABBEGAIL JORDAN DEGELOW Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family TN 4
ABBEY JO HENDERSHOTT Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family OH 2
ABDALLAH ALTARSHAN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism IL 1
ABDALLAH DLEWATI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MI 3
ABDEL WAHAB MERI Allopathic & Osteopathic Physicians|Internal Medicine MI 1
ABDULSALAM K AL KASSAB Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MI 3
ABEL E GONZALEZ Allopathic & Osteopathic Physicians|Internal Medicine NJ 1
ABENA BAAH-FORDJOUR Allopathic & Osteopathic Physicians|Emergency Medicine NY 1
ABHIGNA UDAY KUMAR KULKARNI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism DE 2
ABHILASHA SINGH Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism AZ 1
ABHIRAM JAVVAJI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX 5
ABIDE BATASSI Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner GA 1
ABIGAIL AYAD MAKARY Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family CA 2
ABIGAIL WALSER TERKELTOUB Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical NC 5
ADAM J KROE Allopathic & Osteopathic Physicians|Family Medicine NY 2
ADAM M PERUSKI Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant MI 3
ADARSH A JHA Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CT 2
ADEDAPO F OKUSANYA Allopathic & Osteopathic Physicians|Family Medicine WI 1
ADELYA MINULINA Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family NY 37
ADENIYI O ODUGBESAN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism GA 3
ADEWUMI ADETAYO Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family NJ 1
ADIL ALAVI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism IL 4
ADINA SIKLAWI Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner MI 1
ADRIANA KATZ Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NJ 1
ADRIANA L DAVIS Allopathic & Osteopathic Physicians|Family Medicine NJ 1
ADRIANA M LOZANO CUBILLOS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner KS 1
ADRIANA SOFIA RUIZ Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical GA 3
ADRIENNE ANDERSON Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical GA 1
ADRIENNE HARRIS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family LA 1
ADRIENNE NATASHA TERRY Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant UT 3
AHMED A ARIF Allopathic & Osteopathic Physicians|Internal Medicine MI 1
AHMED ABDUL QADIR Allopathic & Osteopathic Physicians|Family Medicine MI 1
AHMET BAHADIR ERGIN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism FL 7
AILEEN K WANG Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CA 1
AIRTON PINHEIRO DE MENEZES — FL 1
AISHA KHAN Allopathic & Osteopathic Physicians|Internal Medicine CT 1
AISHA ZIKRA KHAN Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant IL 1
AJAY K AGARWALA Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease NY 2
ALAN FELDMAN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism FL 2
ALAN JAY COHEN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TN 1
ALAN OGDEN MARCUS Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CA 1
ALANA KARIE KOEPF BOWMAN Allopathic & Osteopathic Physicians|Family Medicine MI 1
ALBARA MARWA Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology MD 2
ALEEM A SYED Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CA 1