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 |
|---|---|---|---|
| MARIA S JEREVA-SIMEONOVA | Allopathic & Osteopathic Physicians|Family Medicine | NY | 1 |
| MARIA T WEIR | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | MO | 2 |
| MARIANNE JACOB | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | NJ | 1 |
| MARIE ANGELICA L DIAZ | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | SD | 1 |
| MARIE B CHIVERS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | MA | 3 |
| MARIE-LAURIE VANEGAS | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | FL | 1 |
| MARIELE CALDERON BRIONES | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | PA | 1 |
| MARILYN FRANCES VELEZ | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | FL | 2 |
| MARILYN MIRANDA CLIFFORD | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | NJ | 1 |
| MARINA A STRIZHEVSKY | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NJ | 2 |
| MARINA E GOLDIS | Allopathic & Osteopathic Physicians|Pediatrics | NY | 3 |
| MARINA K RUSSO | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | IL | 2 |
| MARINA KURMAN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | NY | 5 |
| MARINA LITVIN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MO | 1 |
| MARINES CASTILLO ECHEVARRIA | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | FL | 1 |
| MARIO H CHAN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | IL | 4 |
| MARITONI CYNTHIA MALVAR | Allopathic & Osteopathic Physicians|Family Medicine | PA | 6 |
| MARITZA E CARRILLO | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | VA | 3 |
| MARIUM ILAHI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NE | 1 |
| MARK D BORCHELT | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MS | 1 |
| MARK D WILKOWSKI | Allopathic & Osteopathic Physicians|Emergency Medicine|Emergency Medical Services | NY | 1 |
| MARK JOSEPH OERTEL | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | KS | 1 |
| MARK P BRIDENSTINE | Allopathic & Osteopathic Physicians|Internal Medicine | CO | 2 |
| MARK PHILLIP STESIN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MN | 8 |
| MARK PLEGER | — | OH | 3 |
| MARKI MEYER | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | CA | 3 |
| MARLA GUZMAN | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Rheumatology | NJ | 3 |
| MARSHALL G SOLOMON | Podiatric Medicine & Surgery Service Providers|Podiatrist | MI | 1 |
| MARTA MEYERS | Allopathic & Osteopathic Physicians|Internal Medicine | NJ | 1 |
| MARTHA ALICIA CUEVAS | — | AZ | 1 |
| MARTIN SCHEAR | Allopathic & Osteopathic Physicians|Family Medicine | OH | 5 |
| MARY A VACCARELLO-CRUZ | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | FL | 1 |
| MARY BERTOSSI | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Pediatrics | GA | 6 |
| MARY DEHERRERA CODO | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | IL | 3 |
| MARY DIAZ-GARCIA | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | NJ | 1 |
| MARY E VITALE | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | NJ | 1 |
| MARY ELIZABETH HARDIN | Allopathic & Osteopathic Physicians|Internal Medicine | GA | 1 |
| MARY K KNIGHT MACHECA | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | MO | 1 |
| MARY KATHERINE MCFETERS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Pediatrics | MI | 4 |
| MARY KATHLEEN SULLIVAN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care | TN | 3 |
| MARY M HAMMEL | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | MO | 2 |
| MARY MELISSA FULGHUM | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TN | 2 |
| MARY T SELF | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | KY | 1 |
| MARY WILSON | Allopathic & Osteopathic Physicians|Family Medicine | AL | 1 |
| MARY-VIRGINIA HYE-JIN PARKER | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | UT | 1 |
| MASSOUD SABERINIA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | VA | 3 |
| MATIN SHARAFATKHAH | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NY | 13 |
| MATTHEW BRIAN CLARK | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | KY | 4 |
| MATTHEW DAVID RATHBUN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care | IL | 1 |
| MATTHEW EDEN | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | FL | 2 |