Evan Mosier, M.D.
NPI 1598152365ActiveIndividual· Internal Medicine, Gastroenterology· Duarte, CA
Internal Medicine, Gastroenterology (M.D.) in Duarte, California, trained at University of Hawaii John A. Burns School of Medicine (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $382,744 for 548 claims, against $5,386 paid for services in 2024. Fujifilm Healthcare Americas Corporation reported $19.75 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1598152365 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 20, 2015 |
| Last updated in NPPES | Oct 23, 2024 |
| Certified by provider | Oct 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A144776 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 16 |
|---|---|
| Services billed | 21 across 12 procedure codes |
| Paid by Medicare | $5,386 |
Part D prescriptions in 2024
| Prescriptions (claims) | 548 · 804 30-day fills |
|---|---|
| Patients | 378 |
| Total drug cost | $382,744 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Industry payments (Open Payments)
- 2025$19.75 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Fujifilm Healthcare Americas Corporation | $19.75 | 1 |
What the 2025 payments were for
- Food and Beverage$19.75 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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