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
KATHERINE ELLEN JOYCE Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NJ $13.73
KATHERINE FRACHETTI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism NY $42.59
KATHERINE M MILLER Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant TN $55.01
KATHERINE MONTOTO Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner TN $16.77
KATHERINE N VELEZ Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology FL $80.89
KATHERINE SCRIVNER Allopathic & Osteopathic Physicians|Internal Medicine MO $21.96
KATHLEEN A HONICK Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner MO $63.87
KATHLEEN B MANTARO Allopathic & Osteopathic Physicians|Internal Medicine NY $21.14
KATHLEEN C ARNOLD Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Acute Care MS $18.96
KATHLEEN GAIL FUCHS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family OH $50.23
KATHLEEN KONDO Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family NY $40.90
KATHLEEN P KURIT Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family FL $47.48
KATHLEEN SHORLA MILLER Nursing Service Providers|Registered Nurse|General Practice AZ $14.06
KATHRYN A JELSMA Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner SD $19.90
KATHRYN ELLEN OMALLEY Allopathic & Osteopathic Physicians|Pediatrics OH $22.66
KATHRYN M O BRIEN Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant NJ $16.91
KATHRYN MARIE SPRINGFIELD Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant TX $130.02
KATHRYN W CLABORN Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family LA $18.49
KATHY BERNSTEIN Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Gerontology LA $15.72
KATIE CASEY Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family MO $108.15
KATIE MARIE STONICHER Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family LA $37.39
KATLYN C HOLT Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant NY $24.21
KATRINA BURGOS Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant OH $29.17
KATYA DIVARI Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism MA $16.74
KAVITHA GANESAN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX $19.90
KAY K WIN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism PA $310.12
KAYLA MERRITT Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family GA $22.36
KAYVAAN MORTAZAVI Allopathic & Osteopathic Physicians|Family Medicine AZ $17.33
KEARY HINDS Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner NJ $17.46
KEIRSTEN D MONTGOMERY Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family WA $59.71
KEITH F CHU CHEONG Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology with Special Qualifications in Child Neurology NY $38.02
KELLI TIDWELL Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner TN $68.19
KELLIE LOUGHRAN Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family DC $14.82
KELLY A HALCOMB Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant NY $29.03
KELLY A HICKS Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology TX $18.27
KELLY HOGAN Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical AZ $16.89
KELLY L DONNELL-JACKSON Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family NJ $36.12
KELLY MARIE NEY Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Pediatrics MA $33.28
KELSEY D PUSKAR Allopathic & Osteopathic Physicians|Family Medicine PA $275.50
KELSEY E OLMSTEAD Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family NY $22.86
KELSEY LEIGH PERFECT Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant OR $18.95
KELSEY RUTH HERRERA Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX $18.85
KELSIE LAMB Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health NC $78.57
KENAN QIN Allopathic & Osteopathic Physicians|Pediatrics IN $33.34
KENDRA M BAUGHN Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant CO $84.29
KENNETH AARON MAIR Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism TX $39.60
KENNETH D TOMPKINS Allopathic & Osteopathic Physicians|Internal Medicine CO $152.13
KENNETH RODRIGUEZ Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism FL $45.25
KENYA S SHOTWELL Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family MO $14.84
KEVIN D BROWN Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism GA $16.90