Richard A. Guerrero Jr., MD

Medicare activity in 2024

Official CMS public-use data for Richard A. Guerrero Jr., 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)38 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)35 services
3. Ultrasound study of arm or leg veins with compression and maneuvers (93970)26 services
4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)20 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)16 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%
• Arthritis54%
• Diabetes49%
• Chronic kidney disease42%
• Anxiety37%

Hospitals where Richard A. Guerrero Jr. works

Medicare's Facility Affiliation Data lists Richard A. Guerrero Jr. 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.

• Foothill Regional Medical CenterTustin, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050780
• Garden Grove Hospital & Medical CenterGarden Grove, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050230
• Huntington Beach HospitalHuntington Beach, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050526
• UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Richard A. Guerrero Jr. is enrolled with Medicare (CMS data updated October 2, 2026).

• 11100 Warner Ave, Suite 258Fountain Valley, CA 92708
• 11100 Warner Ave, Suite 266Fountain Valley, CA 92708 (714) 617‑4733
• 74361 Hwy 111, Suite 5Palm Desert, CA 92260 (760) 610‑5573

Specialties

• General Surgeryprimary

Find other General Surgery doctors in California →

Other general surgeons in Fountain Valley

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

• Dena Amr, MD
• Kais Rona, MD
• Mir B. Ali, MD
• Sean Cao, MD
• Michael A. Russo, MD
• Timothy N. Le, MD
• Atif Iqbal, MD
• Tuong Nguyen, MD

All general surgeons in Fountain Valley →

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