Nahel Al Bouz, MD

Medicare activity in 2024

Official CMS public-use data for Nahel Al Bouz, 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.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)401 services
2. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)43 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)33 services
4. Transitional care management services for problem of high complexity (99496)25 services
5. Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)18 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%
• Arthritis55%
• Diabetes50%
• Ischemic heart disease41%
• Chronic kidney disease31%

Hospitals where Nahel Al Bouz works

Medicare's Facility Affiliation Data lists Nahel Al Bouz 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.

• Casa Colina HospitalPomona, CA · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 050782
• San Antonio Regional HospitalUpland, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050099

Practice locations

Addresses where Nahel Al Bouz is enrolled with Medicare (CMS data updated October 2, 2026).

• 811 E 11th St, Suite 203Upland, CA 91786 (909) 581‑6420

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Upland

Clinicians with the same Medicare primary specialty in Upland, CA — not a recommendation.

• Brandon Tong, DO
• Azhar Majeed, MD
• Jalal Badday, MD
• Al Jen Wang, MD
• Dion A. Kencana, MD
• Gimha S. Gunawardana, MD
• Maximo Diamond, MD
• Sarina H. Kular, MD

All internal medicine doctors in Upland →

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians