Karl K. Johsens, MD

Medicare activity in 2024

Official CMS public-use data for Karl K. Johsens, 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)733 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)575 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)470 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)156 services
5. Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)92 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 cholesterol69%
• High blood pressure66%
• Arthritis41%
• Chronic kidney disease27%
• Ischemic heart disease23%
• Anxiety20%

Hospitals where Karl K. Johsens works

Medicare's Facility Affiliation Data lists Karl K. Johsens 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.

• Dominican HospitalSanta Cruz, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050242
• Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441

Practice locations

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

• 1595 Soquel Dr, Suite 340Santa Cruz, CA 95065 (831) 425‑1279

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Santa Cruz

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

• Eric J. Day, MD
• Mehran Jamali, MD
• Robert Keet, MD
• Rashmi Mathew, MD
• Yuru Y. Song, MD
• Charulata Ramaprasad, MD
• Minoo Sarkarati, MD
• Elizabeth Brennan, MD

All internal medicine doctors in Santa Cruz →

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