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
MARIA S JEREVA-SIMEONOVA Allopathic & Osteopathic Physicians|Family Medicine NY $21.48
MARIA T WEIR Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health MO $33.12
MARIANNE JACOB Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology NJ $15.45
MARIE ANGELICA L DIAZ Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism SD $79.23
MARIE B CHIVERS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family MA $63.67
MARIE-LAURIE VANEGAS Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant FL $23.86
MARIELE CALDERON BRIONES Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism PA $16.04
MARILYN FRANCES VELEZ Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family FL $44.86
MARILYN MIRANDA CLIFFORD Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner NJ $14.03
MARINA A STRIZHEVSKY Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NJ $29.23
MARINA E GOLDIS Allopathic & Osteopathic Physicians|Pediatrics NY $63.65
MARINA K RUSSO Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism IL $35.48
MARINA KURMAN Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health NY $94.60
MARINA LITVIN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MO $13.05
MARINES CASTILLO ECHEVARRIA Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology FL $19.95
MARIO H CHAN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism IL $79.84
MARITONI CYNTHIA MALVAR Allopathic & Osteopathic Physicians|Family Medicine PA $108.50
MARITZA E CARRILLO Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism VA $66.84
MARIUM ILAHI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NE $16.77
MARK D BORCHELT Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MS $17.80
MARK D WILKOWSKI Allopathic & Osteopathic Physicians|Emergency Medicine|Emergency Medical Services NY $17.44
MARK JOSEPH OERTEL Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism KS $14.66
MARK P BRIDENSTINE Allopathic & Osteopathic Physicians|Internal Medicine CO $33.90
MARK PHILLIP STESIN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MN $318.79
MARK PLEGER OH $56.01
MARKI MEYER Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family CA $68.46
MARLA GUZMAN Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Rheumatology NJ $51.04
MARSHALL G SOLOMON Podiatric Medicine & Surgery Service Providers|Podiatrist MI $24.96
MARTA MEYERS Allopathic & Osteopathic Physicians|Internal Medicine NJ $17.60
MARTHA ALICIA CUEVAS AZ $17.01
MARTIN SCHEAR Allopathic & Osteopathic Physicians|Family Medicine OH $86.16
MARY A VACCARELLO-CRUZ Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology FL $23.22
MARY BERTOSSI Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Pediatrics GA $125.71
MARY DEHERRERA CODO Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism IL $58.73
MARY DIAZ-GARCIA Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health NJ $15.29
MARY E VITALE Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family NJ $16.19
MARY ELIZABETH HARDIN Allopathic & Osteopathic Physicians|Internal Medicine GA $29.76
MARY K KNIGHT MACHECA Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health MO $16.97
MARY KATHERINE MCFETERS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Pediatrics MI $85.30
MARY KATHLEEN SULLIVAN Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care TN $46.43
MARY M HAMMEL Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family MO $34.33
MARY MELISSA FULGHUM Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family TN $35.40
MARY T SELF Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism KY $16.91
MARY WILSON Allopathic & Osteopathic Physicians|Family Medicine AL $21.64
MARY-VIRGINIA HYE-JIN PARKER Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner UT $17.33
MASSOUD SABERINIA Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism VA $53.87
MATIN SHARAFATKHAH Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NY $249.16
MATTHEW BRIAN CLARK Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family KY $57.43
MATTHEW DAVID RATHBUN Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care IL $20.54
MATTHEW EDEN Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant FL $35.37