Quick answers
- Does Mowbray P. Hagan accept Medicare assignment?
- Medicare's clinician data says Mowbray P. Hagan may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Mowbray P. Hagan see?
- In 2024, CMS data shows 105 Original Medicare patients and 335 services for Mowbray P. Hagan. This counts Original Medicare only and measures volume, not quality.
- What is Mowbray P. Hagan's NPI number?
- 1235145590. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mowbray P. Hagan, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 105 |
|---|---|
| Services billed to Medicare | 335 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)307 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)13 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol74%
- Arthritis68%
- Diabetes66%
- Chronic kidney disease36%
- Anxiety29%
Hospitals where Mowbray P. Hagan works
Medicare's Facility Affiliation Data lists Mowbray P. Hagan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Corona Regional Medical CenterCorona, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050329
Practice locations
Addresses where Mowbray P. Hagan is enrolled with Medicare (CMS data updated October 2, 2026).
- 482 Corona MallCorona, CA 92879 (951) 734‑6110
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Corona
Clinicians with the same Medicare primary specialty in Corona, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Howard University College Of Medicine |
| Graduation year | 1974 (52 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1235145590 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians