Alireza Hosseini, MD
NPI 1629324140ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Mission Viejo, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Ukiah Adventist Hospital and 2 other groups, practicing in Mission Viejo, California. Their prescriptions cost Medicare Part D more than their services did: $2,331,993 for 3,883 claims, against $73,179 paid for services in 2024. Amgen Inc. was the largest of 23 companies reporting payments in 2025, $1,707 in all, mostly food and beverage. Lists Adventist Health Clearlake and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1629324140 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 2, 2012 |
| Last updated in NPPES | Feb 13, 2021 |
| Certified by provider | Feb 2, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A142579 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 258 |
|---|---|
| Services billed | 751 across 12 procedure codes |
| Paid by Medicare | $73,179 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,883 · 9,185 30-day fills |
|---|---|
| Patients | 607 |
| Total drug cost | $2,331,993 |
| Generic share | 43% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Ukiah Adventist HospitalUkiah, CA · 135 clinicians
- Northern Inyo Healthcare DistrictBishop, CA · 108 clinicians
- Adventist Health Medical Center TehachapiTehachapi, CA · 44 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Adventist Health Mendocino CoastFort Bragg, CA
- Adventist Health Ukiah ValleyUkiah, CA
- Hoag Memorial Hospital PresbyterianNewport Beach, CA
- Northern Inyo HospitalBishop, CA
Industry payments (Open Payments)
- 2025$1,707 · 74 payments from 23 companies
- 2024$1,185 · 53 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $332.18 | 14 |
| Mannkind Corporation | $195.36 | 8 |
| Lilly USA, LLC | $159.18 | 11 |
| Ascendis Pharma Endocrinology Inc | $151.55 | 3 |
| Abbvie Inc. | $112.44 | 6 |
What the 2025 payments were for
- Food and Beverage$1,622 · 72 payments
- Education$85.00 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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