Karl Knudsen Johsens, M.D.
NPI 1295948727ActiveIndividual· Internal Medicine· Santa Cruz, CA
Internal Medicine (M.D.) in Santa Cruz, California, trained at University of Hawaii John A. Burns School of Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $412,606 for 4,310 claims, against $159,359 paid for services in 2024.
Overview
| NPI | 1295948727 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 8, 2007 |
| Last updated in NPPES | Jul 11, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G84030 | CA |
| Internal Medicine, Hospice and Palliative Medicine | 207RH0002X | G084030 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 241 |
|---|---|
| Services billed | 2,488 across 39 procedure codes |
| Paid by Medicare | $159,359 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,310 · 9,115 30-day fills |
|---|---|
| Patients | 235 |
| Total drug cost | $412,606 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of Hawaii John A. Burns School of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Dominican HospitalSanta Cruz, CA
- Stanford Health CareStanford, CA
Other facilities
- Bridge Home HealthHome health agency · Salinas, CA
- Sutter Care at HomeHome health agency · Santa Cruz, CA
- Hospice of Santa Cruz CountyHospice · Scotts Valley, CA
- Pacific Coast ManorNursing home · Capitola, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 43 internal medicine physicians in Santa Cruz · All internal medicine physicians in California