Dr. Johannessen is on Doximity
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Office
1425 S Main St
Walnut Creek, CA 94596Phone+1 925-295-4000
Education & Training
- Alameda Health System-Highland HospitalResidency, Internal Medicine, 1992 - 1995
- University of Oslo Faculty of MedicineClass of 1986
Certifications & Licensure
- CA State Medical License 1993 - 2025
- American Board of Internal Medicine Internal Medicine
Awards, Honors, & Recognition
- Meaningful Use Stage 1 Certification Centers for Medicare & Medicaid Services, 2011
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