Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · PY2022–2025 Search official records Methodology

Amphastar Pharmaceuticals, Inc.

2,111 providers listed $107,034.42 reported 4,872 records General Payments

General Payments reported — all loaded program years

$107,034.42

  • 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.

How this figure is 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.
  • Figures reflect General Payments this manufacturer or GPO reported to CMS. Research and Ownership/Investment payments are separate datasets and are not included here.
  • Methodology & Data — sourcing, labeling, and limitations.

Coverage: program years 2019–2025, General Payments only. Each figure is labeled with its category and program year; categories are never combined.

By program year

Program yearReportedRecordsProviders
PY2022 $650.00 1 1
PY2023 $18,317.68 248 225
PY2024 $41,335.88 2,161 1,339
PY2025 $46,730.86 2,462 1,237

By recipient specialty (25 shown)

Sorted by reported total.

SpecialtyReportedRecordsProviders
Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism $34,332.81 1,837 687
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical $17,068.36 164 54
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family $13,783.64 743 332
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant $6,757.80 328 155
Allopathic & Osteopathic Physicians|Internal Medicine $6,356.35 306 190
Allopathic & Osteopathic Physicians|Family Medicine $5,684.30 307 135
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner $5,308.80 270 118
Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology $5,246.63 278 98
Allopathic & Osteopathic Physicians|Pediatrics $1,932.62 103 59
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health $1,879.09 98 44
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Pediatrics $1,708.44 90 42
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care $981.98 54 25
Allopathic & Osteopathic Physicians|Otolaryngology $650.00 1 1
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Acute Care $428.20 26 12
Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Gastroenterology $402.41 20 7
Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Gerontology $400.78 25 8
Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease $343.09 18 4
Allopathic & Osteopathic Physicians|General Practice $240.16 12 10
Allopathic & Osteopathic Physicians|Internal Medicine|Pulmonary Disease $146.56 8 6
Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Surgical $137.65 7 4
Allopathic & Osteopathic Physicians|Hospitalist $127.20 7 5
Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology $122.63 7 6
Podiatric Medicine & Surgery Service Providers|Podiatrist $111.42 6 3
Allopathic & Osteopathic Physicians|Internal Medicine|Rheumatology $88.53 5 4
Allopathic & Osteopathic Physicians|Allergy & Immunology|Allergy $81.44 4 1

Providers listed (2,111)

Sorted by name. Sort by amount instead

ProviderSpecialtyStateReported by this company
OLAYINKA O WILHELM Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NY $20.68
OLE SAETRUM OPGAARD Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CA $98.92
OLGA M DUCHON Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism IL $16.42
OLIDAYSI ALVAREZ Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family FL $72.60
OLIVER L ONG Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CA $95.12
OLUTOPE O AYODEJI Allopathic & Osteopathic Physicians|Pediatrics NJ $14.02
OLUWATOMISIN A ALUKO Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX $91.54
OMAR BECKETT Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology FL $42.88
OMAR TAN MANLAPAZ Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX $124.73
OMER C HURLBURT Allopathic & Osteopathic Physicians|Family Medicine OH $14.11
OMID RAD POUR Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NV $19.69
OMOLARA O FAKUNLE Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism KY $16.91
OPADA ALZOHAILI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MI $24.75
ORELL R WILLIAMS Allopathic & Osteopathic Physicians|Internal Medicine WI $16.99
OSVALDO GONZALEZ Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MD $52.64
PABLITO G NAGPALA Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology CA $538.40
PABLO F MORA Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX $72.09
PADMA N MANGU Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism OH $60.47
PALLAVY REDDY Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism OH $21.52
PAMELA E DAVIS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family OH $20.66
PAOLA ANDREA MORA TOBON Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family SC $24.66
PAPITA M ROZARIO Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism GA $29.76
PARASKEVI SAPOUNTZI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism IN $19.53
PARBJEET NA KAUR Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care CA $14.73
PARDEEP K SHARMA Allopathic & Osteopathic Physicians|Family Medicine TN $35.70
PARRY A MOORE Allopathic & Osteopathic Physicians|Internal Medicine MD $17.75
PARUL GARG PATHAK Allopathic & Osteopathic Physicians|Pediatrics IN $33.34
PASCAL A DAUPHIN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TN $13.31
PATAMAPORN LEKPRASERT Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism PA $212.93
PATRICIA ARACELI ROJAS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family CA $17.96
PATRICIA GEOVANA SANCHEZ Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family CA $17.15
PATRICIA L HOFFARTH Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health NY $19.12
PATRICIA M GANJA Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical NV $18.84
PATRICIA MAREDA Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family PA $42.10
PATRICIA ROJAS DE LA PAZ Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner CA $20.39
PATRICK TIFFANY Allopathic & Osteopathic Physicians|Pediatrics CO $43.99
PATRICK YUDEZ Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical NV $96.01
PAUL KNIGHT PIPER Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX $99.47
PAUL NORWOOD Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism CA $53.05
PAULINA P MALDONADO Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health NY $73.12
PAULINE FANI Allopathic & Osteopathic Physicians|Allergy & Immunology|Allergy NY $81.44
PAULINE H PAGEL Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner TX $40.85
PEDRAM JAVANMARD Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism VA $66.76
PEDRO A PAGAN BANCHS Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology FL $24.91
PENELOPE MASHBURN Allopathic & Osteopathic Physicians|Surgery OH $16.81
PENNY GLICKMAN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism FL $24.79
PETER A SCHEIDLER Allopathic & Osteopathic Physicians|Internal Medicine OH $23.22
PETER CONLEY CREED Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family WI $20.96
PETER G WILCOX Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Gerontology WA $224.89
PETER IVES WARFIELD Allopathic & Osteopathic Physicians|Pediatrics DC $44.04