Karl Johsens, M.D.
NPI 1295948727 · Internal Medicine Physician · Santa Cruz, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Johsens, M.D. is a Internal Medicine Physician provider in Santa Cruz, CA (NPI 1295948727).
Provider details
- NPI number
- 1295948727
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G084030 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,264 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| 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'SG2211 | 733 | $17 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 575 | $138 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 470 | $98 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 156 | $140 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 92 | $62 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 94 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 228 | 60 |
| Rosuvastatin Calcium | 190 | 52 |
| Losartan Potassium | 112 | 42 |
| Amlodipine Besylate | 110 | 32 |
| Omeprazole | 108 | 36 |
| Metoprolol Succinate | 101 | 26 |
| Zolpidem Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-08
- Last updated
- 2019-07-11
Frequently asked questions
- What is Karl Johsens's NPI number?
- Karl Johsens's National Provider Identifier (NPI) is 1295948727, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Johsens's specialty?
- Karl Johsens is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Johsens located?
- Karl Johsens's practice location on file with NPPES is 1595 Soquel Dr Ste 340, Santa Cruz, CA 95065-1722.
- What is Karl Johsens's phone number?
- The practice phone number listed in the NPPES registry for Karl Johsens is (831) 425-1279.
- Does Karl Johsens accept Medicare?
- Karl Johsens is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Johsens's NPI active?
- Yes — Karl Johsens's NPI (1295948727) is active in the NPPES registry as of the last update on 2019-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.