G. Alden Holmes, MD

Medicare activity in 2024

Official CMS public-use data for G. Alden Holmes, 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. Destruction of precancer skin growth, 2-14 growths (17003)867 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)237 services
3. Destruction of precancer skin growth, 1 growth (17000)205 services
4. Biopsy of related skin growth, first growth (11102)175 services
5. Biopsy of related skin growth, each additional growth (11103)168 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 cholesterol75%
• High blood pressure68%
• Arthritis48%
• Diabetes27%
• Ischemic heart disease22%
• Chronic kidney disease22%

Hospitals where G. Alden Holmes works

Medicare's Facility Affiliation Data lists G. Alden Holmes 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.

• Providence St. Jude Medical CenterFullerton, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050168

Practice locations

Addresses where G. Alden Holmes is enrolled with Medicare (CMS data updated October 2, 2026).

• 1950 Sunny Crest Dr, Suite 2900Fullerton, CA 92835 (714) 992‑5350
• 4300 Rose DrYorba Linda, CA 92886 (714) 577‑6601

Group practices

Medicare enrollment lists G. Alden Holmes as a member of this group (CMS data updated October 2, 2026).

• Providence Medical Foundation1,466 clinicians in the group

Specialties

• Dermatologyprimary

Find other Dermatology doctors in California →

Other dermatologists in Fullerton

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

• Marguerite J. Critelli, MD
• Joyce T. Yuan, MD
• Karen R. Simpson, MD
• Amy N. Nguyen, MD
• Austin Longberg, DO
• David Sire, MD
• Patrick R. Dahl, MD
• William P. Baugh, MD

All dermatologists in Fullerton →

Other clinicians in Providence Medical Foundation

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

• Gerrard F. Ferrer, DO
• Steven E. Saltman, MD
• Lam D. Dang, MD
• Elmer Y. Chang, MD
• Lea Dominique M. Abadies, PA
• Jennifer J. Choate, 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