Karl J. Gebhard, MD

Medicare activity in 2024

Official CMS public-use data for Karl J. Gebhard, 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)435 services
2. Insertion of needle into vein for collection of blood sample (36415)127 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)120 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)77 services
5. Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow (G0181)50 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%
• Arthritis34%
• Ischemic heart disease21%
• Diabetes20%
• Atrial fibrillation17%

Hospitals where Karl J. Gebhard works

Medicare's Facility Affiliation Data lists Karl J. Gebhard 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 Mission HospitalMission Viejo, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050567

Practice locations

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

• 26922 Oso Pkwy, Suite 380Mission Viejo, CA 92691 (949) 305‑0110

Specialties

• Family Practiceprimary

Find other Family Practice doctors in California →

Other family doctors in Mission Viejo

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

• Mahsa Yazdan Bakhsh, MD
• Casey Goodman, MD
• Jeffrey J. Globus, MD
• Todd Armbruster, DO
• Tengis R. Riznis, MD
• Quoc B. Ta, MD
• Stefanie J. Fightlin, DO
• Linda M. Davis, MD

All family doctors in Mission Viejo →

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