Aaron L. Nguyen, MD

Medicare activity in 2024

Official CMS public-use data for Aaron L. Nguyen, 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)332 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)158 services
3. Ultrasound measurement of bladder capacity after voiding (51798)102 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)96 services
5. Urinalysis, manual test (81002)89 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%
• Diabetes46%
• Chronic kidney disease39%
• Ischemic heart disease31%

Hospitals where Aaron L. Nguyen works

Medicare's Facility Affiliation Data lists Aaron L. Nguyen 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
• Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050231
• 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 Aaron L. Nguyen is enrolled with Medicare (CMS data updated October 2, 2026).

• 210 W Bonita Ave, Suite 100Pomona, CA 91767 (909) 623‑3428
• 999 San Bernardino RdUpland, CA 91786 (909) 623‑3428

Group practices

Medicare enrollment lists Aaron L. Nguyen as a member of this group (CMS data updated October 2, 2026).

• Inland Urology Medical Group Inc8 clinicians in the group

Specialties

• Urologyprimary

Find other Urology doctors in California →

Other urologists in Pomona

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

• Adam D. Hickerson, MD
• Isaac L. Kelly, MD
• Michael J. Consolo, DO
• Elmer B. Pineda, MD
• Christopher K. Tsai, MD

All urologists in Pomona →

Other clinicians in Inland Urology Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Hector Gutierrez, NP
• Adam D. Hickerson, MD
• Isaac L. Kelly, MD
• Amy K. Titus, NP
• Michael J. Consolo, DO
• Elmer B. Pineda, MD

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