Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Jonathan A Rosaasen, MD

Individual provider Family Medicine Physician · NPI 1528171352

Dr. Jonathan A Rosaasen, MD is a Family Practice in Thousand Oaks, California. Graduated from Loma Linda University School of Medicine in 2002, 24 years ago. Practices with Rosaasen Family Medicine, Inc, a 2-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
24
Trained at
Loma Linda University School of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

187 E Wilbur Rd # 100
Thousand Oaks, CA 91360-5572
Phone: (805) 492-1015
Fax: (805) 492-2035
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 301 Science Dr, Moorpark, CA 93021-2094 — (805) 531-9400
  • 430 E Avenida De Los Arboles Ste 204, Thousand Oaks, CA 91360-3017 — (805) 492-1015

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence A85781 (CA)

Record details

NPI number1528171352
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 16, 2006
Last updated in NPPESMarch 7, 2023
Certification dateOctober 13, 2020
Mailing address187 E Wilbur Rd # 100, Thousand Oaks, CA 91360-5572

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolLOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Rosaasen Family Medicine, Inc. — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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