Amphastar Pharmaceuticals, Inc.
2,111 providers listed 4,872 records General Payments
General Payments — 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. Each figure is labeled with its category and program year; categories are never combined.
By program year
| Program year | Reported | Records | Providers | Detail |
|---|---|---|---|---|
| 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
- Allergy & Immunology · Allergy 1
- Anesthesiology 2
- Colon & Rectal Surgery 1
- Emergency Medicine 2
- Emergency Medicine · Emergency Medical Services 2
- Family Medicine 135
- Family Medicine · Geriatric Medicine 1
- General Practice 10
- Hospitalist 5
- Internal Medicine 190
- Internal Medicine · Cardiovascular Disease 4
- Internal Medicine · Endocrinology, Diabetes & Metabolism 687
- Internal Medicine · Gastroenterology 1
- Internal Medicine · Geriatric Medicine 3
- Internal Medicine · Infectious Disease 1
- Internal Medicine · Interventional Cardiology 1
- Internal Medicine · Nephrology 6
- Internal Medicine · Pulmonary Disease 6
- Internal Medicine · Rheumatology 4
- Internal Medicine · Sports Medicine 1
- Internal Medicine · Transplant Hepatology 1
- Nuclear Medicine 1
- Obstetrics & Gynecology 3
- Obstetrics & Gynecology · Gynecologic Oncology 1
- Ophthalmology 1
- Orthopaedic Surgery 1
- Otolaryngology 1
- Pain Medicine · Interventional Pain Medicine 1
- Pathology · Anatomic Pathology & Clinical Pathology 1
- Pediatrics 59
- Pediatrics · Adolescent Medicine 1
- Pediatrics · Developmental - Behavioral Pediatrics 1
- Pediatrics · Pediatric Cardiology 1
- Pediatrics · Pediatric Critical Care Medicine 1
- Pediatrics · Pediatric Endocrinology 98
- Pediatrics · Pediatric Gastroenterology 7
- Pediatrics · Pediatric Hematology-Oncology 1
- Pediatrics · Pediatric Infectious Diseases 1
- Pediatrics · Pediatric Rheumatology 1
- Physical Medicine & Rehabilitation 1
- Plastic Surgery 1
- Psychiatry & Neurology · Neurology 4
- Psychiatry & Neurology · Neurology with Special Qualifications in Child Neurology 2
- Psychiatry & Neurology · Psychiatry 2
- Radiology · Diagnostic Radiology 1
- Surgery 1
- Surgery · Pediatric Surgery 1
- Urology · Urogynecology and Reconstructive Pelvic Surgery 1
Nursing Service Providers 3 specialties 3 providers
Physician Assistants & Advanced Practice Nursing Providers 16 specialties 805 providers
- Clinical Nurse Specialist 2
- Clinical Nurse Specialist · Adult Health 3
- Nurse Practitioner 118
- Nurse Practitioner · Acute Care 12
- Nurse Practitioner · Adult Health 44
- Nurse Practitioner · Family 332
- Nurse Practitioner · Gerontology 8
- Nurse Practitioner · Obstetrics & Gynecology 1
- Nurse Practitioner · Pediatrics 42
- Nurse Practitioner · Pediatrics, Critical Care 1
- Nurse Practitioner · Primary Care 25
- Nurse Practitioner · Psychiatric/Mental Health 2
- Nurse Practitioner · Women's Health 2
- Physician Assistant 155
- Physician Assistant · Medical 54
- Physician Assistant · Surgical 4
Podiatric Medicine & Surgery Service Providers 1 specialty 3 providers
Providers listed (2,111)
Sorted by name; identical names by identifier.
| Provider | Specialty | State | Records reported by this company |
|---|---|---|---|
| ROBERT J COOPER | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MA | 1 |
| ROBERT J PEARLSTEIN | Allopathic & Osteopathic Physicians|Internal Medicine|Geriatric Medicine | PA | 2 |
| ROBERT MICHAEL HOLTRUP | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | OH | 4 |
| ROBERT ORTIZ | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NY | 2 |
| ROBERT R KIMMEL | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | WA | 1 |
| ROBERT RANDAL GEIER | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TN | 6 |
| ROBERT S BENNETT | Allopathic & Osteopathic Physicians|Pediatrics | NY | 1 |
| ROBERT S LIND | Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease | NJ | 1 |
| ROBERT WOZNIAK | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | SC | 2 |
| ROBERTA LEE ESCALERA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | AZ | 5 |
| ROBIN BUTCHER | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TX | 1 |
| ROBIN E KILPATRICK | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | LA | 1 |
| ROBIN L MORRISON | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TN | 4 |
| ROBIN MAIQUEL VILLATORO | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | CA | 1 |
| RODNEY E SNOW | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TN | 4 |
| RODNEY E STURGEON | Allopathic & Osteopathic Physicians|Family Medicine | TN | 1 |
| RODOLFO B PROTACIO | Allopathic & Osteopathic Physicians|Internal Medicine | CA | 1 |
| RODRIGO MD VALDERRAMA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | AL | 1 |
| ROGER GEORGE CARR | Allopathic & Osteopathic Physicians|Internal Medicine | GA | 1 |
| ROGER V TORRES | Allopathic & Osteopathic Physicians|Internal Medicine | WI | 1 |
| ROHINI SACHDEVA | Allopathic & Osteopathic Physicians|Internal Medicine | OH | 2 |
| ROHIT KULKARNI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NJ | 2 |
| ROLA SAAD | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | AZ | 1 |
| ROLANDO C GUEVARRA | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Gastroenterology | NY | 4 |
| ROMEU MANUEL AZEVEDO | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MD | 1 |
| RONAK CHAUDHARI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | KY | 4 |
| RONALD WATTS | — | GA | 2 |
| ROOHI KAUR SAINI | Allopathic & Osteopathic Physicians|Family Medicine | FL | 1 |
| ROOPA ROY | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NJ | 1 |
| ROOPA SATHYAPRAKASH | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TX | 2 |
| ROSA NIEMI | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | AL | 2 |
| ROSALBA MUCCIARELLA | Allopathic & Osteopathic Physicians|Internal Medicine | NY | 2 |
| ROSALINDA V PROTACIO | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | CA | 1 |
| ROSANNA R NICOLETTI | Allopathic & Osteopathic Physicians|Family Medicine | AZ | 1 |
| ROSELYN TORRES RIERA | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | FL | 1 |
| ROSEMARIE LAJARA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TX | 2 |
| ROSEMARY MCCABE | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | NJ | 1 |
| ROSHANAK HABIBI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | AZ | 1 |
| ROSILY PHILIP | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | NJ | 1 |
| ROXANA RODRIGUEZ | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | FL | 1 |
| ROY W LANGLEY | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | VA | 2 |
| ROZA LISS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care | MD | 1 |
| RUBY FAVELA-PREZAS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TX | 2 |
| RUBYLYN ROSE HILARIO | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | IL | 5 |
| RUDOLF D BUCCI | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | NY | 3 |
| RUPAL R DESAI | Allopathic & Osteopathic Physicians|Internal Medicine | MD | 1 |
| RUPESH K DAVE | Allopathic & Osteopathic Physicians|Internal Medicine|Pulmonary Disease | GA | 1 |
| RUSHICKAH BROOKS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | CT | 1 |
| RUSSELL KINSHUN FUNG | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | GA | 3 |
| RUTH HABTOM WELDEKRISTOS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Acute Care | — | 1 |