Quick answers
- Does Magdi Messiha accept Medicare assignment?
- Yes. Medicare's clinician data says Magdi Messiha accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Magdi Messiha see?
- In 2024, CMS data shows 136 Original Medicare patients and 1,053 services for Magdi Messiha. This counts Original Medicare only and measures volume, not quality.
- What is Magdi Messiha's NPI number?
- 1346269370. 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 Magdi Messiha, 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 | 136 |
|---|---|
| Services billed to Medicare | 1,053 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)536 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)223 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)212 services
- Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)66 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 cholesterol75%
- Arthritis68%
- Depression60%
- Anxiety54%
- Diabetes52%
Hospitals where Magdi Messiha works
Medicare's Facility Affiliation Data lists Magdi Messiha 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.
- Coastal Communities HospitalSanta Ana, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050747
Practice locations
Addresses where Magdi Messiha is enrolled with Medicare (CMS data updated October 2, 2026).
- 16 IndianaIrvine, CA 92606 (949) 514‑0194
Specialties
- Internal Medicineprimary
- Geriatric Medicinealso
Other internal medicine doctors in Irvine
Clinicians with the same Medicare primary specialty in Irvine, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1346269370 |
| 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