Quick answers
- Does Donald Hannoun accept Medicare assignment?
- Yes. Medicare's clinician data says Donald Hannoun 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 Donald Hannoun see?
- In 2024, CMS data shows 413 Original Medicare patients and 1,334 services for Donald Hannoun. This counts Original Medicare only and measures volume, not quality.
- What is Donald Hannoun's NPI number?
- 1417187162. 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 Donald Hannoun, 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 | 413 |
|---|---|
| Services billed to Medicare | 1,334 |
| Different services or procedures | 77 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)114 services
- Telephone medical discussion with physician, 11-20 minutes (99442)89 services
- Diagnostic exam of bladder and urethra using an endoscope (52000)79 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)56 services
- Telephone medical discussion with physician, 5-10 minutes (99441)55 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%
- Arthritis47%
- Diabetes44%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)38%
- Ischemic heart disease35%
Hospitals where Donald Hannoun works
Medicare's Facility Affiliation Data lists Donald Hannoun 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.
- Antelope Valley HospitalLancaster, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050056
- Henry Mayo Newhall HospitalValencia, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050624
- Palmdale Regional Medical CenterPalmdale, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050204
- Providence Holy Cross Medical CenterMission Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050278
- Providence Saint Joseph Medical CenterBurbank, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050235
Practice locations
Addresses where Donald Hannoun is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 UCLA Medical Plz, Suite 140Los Angeles, CA 90095 (310) 825‑5986
- 25775 McBean Pkwy, Suite 202Valencia, CA 91355 (310) 794‑7700
Group practices
Medicare enrollment lists Donald Hannoun as a member of this group (CMS data updated October 2, 2026).
- The Regents of the University of California48 clinicians in the group
Specialties
- Urologyprimary
Other urologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in The Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417187162 |
| 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