John Webster, D.O
NPI 1093240178ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Riverside, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (D.O) in Riverside, California, trained at College of Osteo Med of the Pacific at Pomona (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $1,390,939 for 3,468 claims, against $22,830 paid for services in 2024. Viiv Healthcare Company was the largest of 6 companies reporting payments in 2025, $418.14 in all, mostly food and beverage.
Overview
| NPI | 1093240178 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O |
| Sole proprietor | No |
| NPI issued | Apr 26, 2017 |
| Last updated in NPPES | Apr 11, 2025 |
| Certified by provider | Apr 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 20A17018 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 102 |
|---|---|
| Services billed | 322 across 11 procedure codes |
| Paid by Medicare | $22,830 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,468 · 7,662 30-day fills |
|---|---|
| Patients | 422 |
| Total drug cost | $1,390,939 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | College of Osteo Med of the Pacific at Pomona |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Riverside Medical Clinic IncRiverside, CA · 173 clinicians
Industry payments (Open Payments)
- 2025$418.14 · 16 payments from 6 companies
- 2024$837.15 · 30 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $169.02 | 6 |
| Paratek Pharmaceuticals, Inc. | $78.61 | 3 |
| Amgen Inc. | $73.17 | 3 |
| Glaxosmithkline, LLC. | $48.44 | 2 |
| Novo Nordisk Inc | $35.00 | 1 |
What the 2025 payments were for
- Food and Beverage$418.14 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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