Mowbray Philip Hagan, MD
NPI 1235145590ActiveIndividual· Internal Medicine· Corona, CA
Internal Medicine (MD) in Corona, California, trained at Howard University College of Medicine (class of 1974). Their prescriptions cost Medicare Part D more than their services did: $1,202,658 for 7,607 claims, against $30,538 paid for services in 2024. Amgen Inc. was the largest of 6 companies reporting payments in 2025, $508.17 in all, mostly food and beverage.
Overview
| NPI | 1235145590 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 31, 2006 |
| Last updated in NPPES | Dec 11, 2025 |
| Certified by provider | Dec 11, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A29431 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 105 |
|---|---|
| Services billed | 335 across 10 procedure codes |
| Paid by Medicare | $30,538 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,607 · 12,568 30-day fills |
|---|---|
| Patients | 308 |
| Total drug cost | $1,202,658 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 1974 |
| Medicare specialty | Internal Medicine |
Hospital affiliation
- Corona Regional Medical CenterCorona, CA
Other facilities
- Del Rosa Home Health, Inc.Home health agency · Corona, CA
- Legacy Home Health CareHome health agency · Norco, CA
- Lorian HealthHome health agency · Riverside, CA
- Mission Home Health of Ontario, IncHome health agency · Ontario, CA
- Ambercity Hospice, IncHospice · Riverside, CA
Industry payments (Open Payments)
- 2025$508.17 · 29 payments from 6 companies
- 2024$578.20 · 32 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $255.93 | 18 |
| Novo Nordisk Inc | $157.70 | 6 |
| Sumitomo Pharma America, Inc. | $29.95 | 2 |
| Lilly USA, LLC | $25.01 | 1 |
| Dexcom, Inc. | $23.85 | 1 |
What the 2025 payments were for
- Food and Beverage$508.17 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Corona
- 1003850553
- 1053393959
- 1073808994
- 1124696331
- 1154884351
- 1235307141
- 1316203250
- 1396168944
- 1427266352
- 1487740262
- 1508260340
- 1558362723
All 85 internal medicine physicians in Corona · All internal medicine physicians in California