Stephen J. Ierardi, MD

Medicare activity in 2024

Official CMS public-use data for Stephen J. Ierardi, 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. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)314 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)240 services
3. Insertion of needle into vein for collection of blood sample (36415)183 services
4. Blood test, basic group of blood chemicals (calcium, total) (80048)181 services
5. Liver function blood test panel (80076)175 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 pressure72%
• Arthritis38%
• Chronic kidney disease34%
• Diabetes32%
• Ischemic heart disease26%

Hospitals where Stephen J. Ierardi works

Medicare's Facility Affiliation Data lists Stephen J. Ierardi 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.

• Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050603

Practice locations

Addresses where Stephen J. Ierardi is enrolled with Medicare (CMS data updated October 2, 2026).

• 23141 Moulton Pkwy, Suite 102Laguna Hills, CA 92653 (949) 916‑9100

Group practices

Medicare enrollment lists Stephen J. Ierardi as a member of this group (CMS data updated October 2, 2026).

• Scke Inc22 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in California →

Other family doctors in Laguna Hills

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

• Joan Y. Sy, DO
• Lynn E. Napoli, MD
• Sabeen Munib, MD
• Howard K. Bland, MD
• Judy M. Huynh, DO
• Mark P. Foster, MD
• Marlene Yacoob, MD
• Jorge A. Rivero, MD

All family doctors in Laguna Hills →

Other clinicians in Scke Inc

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

• Ku Juey R. Chang, MD
• Lynn E. Napoli, MD
• Kameko Oshiro, PA
• Monica M. Harms, MD
• Joji James, MD
• Priyanka B. Krishnan, 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