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 |
|---|---|---|---|
| MIA ISADORA LOYOLA FRONTERAS | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | FL | 1 |
| MICHAEL A BERK | Allopathic & Osteopathic Physicians|Internal Medicine | MO | 1 |
| MICHAEL ALAN WOOD | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | MI | 3 |
| MICHAEL B WISEMAN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | TN | 2 |
| MICHAEL BUI | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | CA | 1 |
| MICHAEL CARL LOAR | Allopathic & Osteopathic Physicians|Pediatrics | OH | 2 |
| MICHAEL D LOUGHNER | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | CO | 5 |
| MICHAEL DOUGLAS LEAHY | Allopathic & Osteopathic Physicians|Internal Medicine | TN | 1 |
| MICHAEL GLENN CARLSON | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TN | 3 |
| MICHAEL H SHANIK | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NY | 7 |
| MICHAEL HEILE | Allopathic & Osteopathic Physicians|Family Medicine | OH | 2 |
| MICHAEL J O BRIEN | Allopathic & Osteopathic Physicians|Emergency Medicine | NY | 1 |
| MICHAEL JAY MELLMAN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | FL | 1 |
| MICHAEL K LAI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | CA | 1 |
| MICHAEL L YU | Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology | TN | 1 |
| MICHAEL P GROSSMAN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Acute Care | GA | 2 |
| MICHAEL SPIVAK | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | OH | 3 |
| MICHAEL T PUGLIESE | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | NY | 2 |
| MICHAEL TRAN | — | CA | 1 |
| MICHAELA L KOHLER | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | NE | 1 |
| MICHAELA R HOEFLICH | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical | NY | 2 |
| MICHELLE D WELCH | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TX | 1 |
| MICHELLE LEE JAMPOL | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Pediatrics | FL | 3 |
| MICHELLE M KNOLL | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | MO | 2 |
| MICHELLE M MIKE-NICHOLAS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | KY | 1 |
| MICHELLE QUYNHNHU NGOC NGUYEN | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | AZ | 1 |
| MICHELLE RIVERA | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | TX | 1 |
| MICHELLE S VITALE | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | NJ | 1 |
| MICHELLE STONE | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | NJ | 1 |
| MIDDEY DAMIAN | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | FL | 5 |
| MIGUEL P RIVERA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | LA | 1 |
| MILADYS MIRIAM PALAU COLLAZO | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | FL | 4 |
| MINH MACH | — | CA | 7 |
| MINOU P TRAN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | CA | 7 |
| MIRIAM ELIZABETH ZAPATA | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | FL | 3 |
| MITCHELL IAN SORSBY | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TX | 1 |
| MOHAMED DAFALLA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | UT | 4 |
| MOHAMMAD A HAMMOUDE | Allopathic & Osteopathic Physicians|Internal Medicine | MI | 1 |
| MOHAMMAD BILAL AWAN | Allopathic & Osteopathic Physicians|Internal Medicine | NY | 1 |
| MOHAMMAD EL-RIFAI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | IL | 1 |
| MOHAMMAD J SALEH | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MI | 2 |
| MOHAMMAD Q KHAN | Allopathic & Osteopathic Physicians|Internal Medicine | WI | 1 |
| MOHAMMED ASIF | Allopathic & Osteopathic Physicians|Plastic Surgery | IL | 1 |
| MOHAMMED G ELHASSAN | Allopathic & Osteopathic Physicians|Hospitalist | CA | 3 |
| MOHAMMED R AZAZ | Allopathic & Osteopathic Physicians|Internal Medicine | NY | 5 |
| MOHAMMED SOUBHI NIZAM | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | UT | 2 |
| MOHAMMED SYED | Allopathic & Osteopathic Physicians|Internal Medicine | MI | 1 |
| MOHSEN ZENA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NE | 2 |
| MOHSINAH USMANI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NY | 2 |
| MOJGAN RAHMANIYAN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | SC | 2 |