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 |
|---|---|---|---|
| RAJIV DATTATREYA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TX | 1 |
| RAKESH R PATEL | Allopathic & Osteopathic Physicians|Family Medicine | TX | 4 |
| RALPH JOE TEAGUE | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | AL | 1 |
| RALPH OIKNINE | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MO | 2 |
| RAMA POOLA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | IL | 4 |
| RAMBOD AMANI YAZDI | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | CA | 24 |
| RAMZIEH AZMEH | Allopathic & Osteopathic Physicians|Pediatrics | OH | 5 |
| RANDOLPH A PINTO | Allopathic & Osteopathic Physicians|Family Medicine | CO | 1 |
| RANJANI P RAMANATHAN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MO | 2 |
| RAQUEL KRISTIN SANCHEZ ONG | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NJ | 1 |
| RASHMEE POKHAREL | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | FL | 1 |
| RASHMI REDDY | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NJ | 1 |
| RAUF M BABA | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | TN | 2 |
| RAYMOND BENJAMIN STADIEM | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NC | 1 |
| REAGAN DENNY | — | CA | 1 |
| REBECCA F GELIEBTER | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | NJ | 1 |
| REBECCA MARIE PARKS | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TN | 1 |
| REBEKAH M MILLIRON | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | NC | 6 |
| REBEKAH WHITE HARPER | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner | TN | 3 |
| REGINA ANN PURYEAR | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TN | 1 |
| REHAN AHMAD | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NY | 7 |
| REICELLE RUTH DUMENSEL GARCIA | Allopathic & Osteopathic Physicians|Internal Medicine | NE | 2 |
| REKHA CHERIYAN | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | AZ | 1 |
| REMA P MENON | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant|Medical | MI | 1 |
| REMEDIOS SENORA ALCERA-POE | Allopathic & Osteopathic Physicians|Pediatrics | WI | 1 |
| RENA M JOHNSON | Allopathic & Osteopathic Physicians|Family Medicine | MD | 1 |
| RENALDA DASHI | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | MI | 2 |
| RENATA N MAZZEI-KLOKIW | Allopathic & Osteopathic Physicians|Family Medicine | NY | 1 |
| RENEE BURR | Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant | PA | 1 |
| RENEE CHRISTINE CHISUM | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | TX | 2 |
| RESHMA A BHANUSHALI | Allopathic & Osteopathic Physicians|Internal Medicine | LA | 2 |
| RESHMA PATEL | Allopathic & Osteopathic Physicians|Internal Medicine | GA | 1 |
| RIA M LIM | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NJ | 1 |
| RIAN KYLES-STEWART | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | OH | 1 |
| RICHA REDHU GEHLAUT | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MI | 1 |
| RICHARD CAPDEVILA | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Family | FL | 4 |
| RICHARD HOFFMAN | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | NY | 1 |
| RICHARD P WHETZEL -SCHILL | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | FL | 2 |
| RICHARD W BERGSTROM | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | OR | 2 |
| RICHIE TORRES | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Adult Health | GA | 4 |
| RIMAH SHARIEF | Allopathic & Osteopathic Physicians|Pediatrics | NY | 5 |
| RIPUDAMAN S HUNDAL | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | DE | 5 |
| RISHITA P TIWARI | Allopathic & Osteopathic Physicians|Pediatrics|Pediatric Endocrinology | AZ | 2 |
| RITA J EL-HAJJ | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | PA | 6 |
| RITA N SHAH | Physician Assistants & Advanced Practice Nursing Providers|Nurse Practitioner|Primary Care | MI | 1 |
| RITA P SHAH | Allopathic & Osteopathic Physicians|Internal Medicine | MI | 1 |
| RITESH KALRA | Allopathic & Osteopathic Physicians|Internal Medicine | NJ | 1 |
| ROBERT ANTHONY CLARKE | Allopathic & Osteopathic Physicians|Internal Medicine | NJ | 1 |
| ROBERT C IGWE | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | MI | 3 |
| ROBERT C KNAPP | Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism | PA | 15 |