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Dr. Jonathan Rosaasen, MD

Dr. Jonathan Rosaasen, MD

Family Medicine*

Dr. Jonathan Rosaasen, MD is a family medicine physician in Thousand Oaks, CA. He is affiliated with medical facilities Los Robles Regional Medical Center and Adventist Health Bakersfield. He is accepting new patients and telehealth appointments.

4.1 Star Rating
Based on 19 reviews 4.1 Star Rating (19 reviews)

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MDVIP - Thousand Oaks, CA

Locations

MDVIP - Thousand Oaks, CA

MDVIP - Thousand Oaks, California187 E Wilbur Rd Ste 100 Thousand Oaks, CA 91360
1
Patient Favorite Award

Dr. Rosaasen is a patient favorite Family Medicine Physician

The Patient Favorite badge is awarded to top-performing providers who surpass average ratings and comments, reflecting their commitment to exceptional patient care. Read our methodology

  • Area of ExpertiseDr. Rosaasen specializes in the area of Family Practice. See board certifications
  • Explains Conditions WellPatients said this doctor explains conditions well. See reviews
  • Offers TelehealthThis doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top HospitalAmerica’s 50 Best Hospitals for Surgical Excellence Award™ See hospitals

Experience Check

Search for experience in a specific area

Dr. Rosaasen's Reviews

Likelihood to recommend Dr. Rosaasen

4.1
19 ratings, 13 with a written review
5 star
74%
74%
4 star
5%
5%
3 star
0%
0%
2 star
0%
0%
1 star
21%
21%

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Excellent, Thoughtful Doctor
Dr. Rosaasen really takes the time to sit with you, understand your situation, and provide a thoughtful treatment approach. I was immensely impressed with how long he talked with me on my initial visit and explained pros, cons, benefits, risks. Overall, I find his treatment to be very thoughtful and nuanced – often in subtle ways I don’t understand or come to appreciate until well after the visit. He’s also impressed me with how up-to-date he stays on the latest studies and is very willing to adjust treatment plans as new data are available.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Jacob – Mar 28, 2025
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Consistent excellence
Visit one to who knows how many visits have been excellent. Brilliant at fast with diagnosis and never wrong. Always friendly and treats you like you are the only patient. Referrals, if needed, quickly and to excellent specialist. Follow up care continually until 100% healthy. He truly cares how his patients are doing medically and personally. No matter the degree of sickness, I always know I have the best care and will be taken well care of.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
# 1 rated health care provider. – Jan 24, 2025
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Cutting Edge Physician
Caring and compassionate, and well informed on the latest treatments. If I could give greater than 5 stars, I would. I have never experienced a physician so willing to put his patients first.
What went well
  • I felt respected
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Rick T. – Oct 18, 2024
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Dr. Rosaasen is a very good doctor and gives you all the time you need to address any concerns you are experiencing...physical or mental. He has a calming demeanor which is very good for my anxious personality. I feel like I am in good hands with him as my physcian.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Lisa Kennedy – Jul 10, 2024
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Talk to the Doc...
Dr. Rosaasen was thorough with my health issues and took more than adequate time to answer my questions and discuss options. The environment was comfortable and relaxed!!
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Linda – Oct 04, 2023
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A fine doctor who cares about people.
Dr. Rosaasen always takes time to explain your condition and go over test results. I never feel rushed when I require an appointment.
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Tony R – Aug 26, 2023
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I’ve recommended Dr Rosaasen to others.
Dr Rosaasen is thorough, takes his time and is always available and thinking of his patients. He not only discusses my present physical and emotional health , but future health.
What went well
No results
What could be improved
No results
1 other person found this helpful
Helpful
Jun 24, 2023
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Excellent care
Dr. Rosaasen is very thorough, courteous and thoughtful. His entire office is terrific.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Sam Chapetta – Mar 04, 2023
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Front office staff is apathetic and do not communicate very well. After what the receptionist did, I never even saw the doctor.
What went well
No results
What could be improved
  • Staff wasn't friendly
3 others found this helpful
Helpful
Walter Randolff – May 06, 2021
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Nonresponsive, absentee and indifferent to patient needs. I have had repeated difficulty in getting in touch with this office. According to my pharmacy this is common occurrence with this provider. My insurance connected me with the group and I advise not using Dr. Rosaasen for any medical issues.
What went well
  • Office environment
  • Appointment scheduling
What could be improved
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Didn't trust the provider's decisions
3 others found this helpful
Helpful
Ari Ericson – Oct 07, 2020
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There is a reason that my entire family has seen Dr. Rosaasen for the last 10 years. He is kind, knowledgeable and will listen to your concerns. He was able to help me with a successful long term weight loss plan and manage my hypertension. I do not understand how anyone can rate this doctor low. He is one of the best. If you can get past the one robot nurse, the rest of the office is GREAT!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
1 other person found this helpful
Helpful
Aug 31, 2019
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One of the best doctors I have seen. Actually listens and works with you to manage your health. I have struggled with my weight for decades, then developed high blood pressure. Dr. Rosaasen was the first doctor that seemed to really understand. With his help I lost 40 lbs in about 6 mos and I'm going on one year of keeping it off.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 others found this helpful
Helpful
Jul 26, 2018
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Just called to schedule an appt and get info and a service I may need. Iam a returning pt and the front office girl that was on the phone with me could not be more rude Needless to say I never got the info I was looking for and I will seek a new MD
What went well
No results
What could be improved
  • Difficult to schedule appointment
  • Staff wasn't friendly
3 others found this helpful
Helpful
John resendez in CA – Jun 07, 2018
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About Me

Watch Dr. Rosaasen's Video

care philosophy

MDVIP empowers physicians with advanced diagnostic tools and support that help them deliver a better healthcare experience for more than 350,000 patients nationwide. MDVIP-affiliated primary care doctors are able to practice personalized, preventive...read more

biography

Dr. Rosaasen, Board Certified Family Medicine physician, offers a different approach to primary care. He sees fewer patients, which means more time for each one. Patients appreciate same/next-day appointments that start on time and aren't rushed;...read more
  • Family Medicine

  • Concierge Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Kaiser Permanente|kaiser Riverside Riverside, Ca Family Medicine 2003-2005

    Residency Hospital
  • Kaiser Permanente|kaiser Riverside Riverside, Ca 2002-2003

    Internship Hospital
  • Loma Linda University

    Medical School
American Board of Medical Specialties®
American Board of Family Medicine®
Family Practice
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.
  • English

  • Spanish

Patient Favorite Award

Dr. Rosaasen is a patient favorite Family Medicine Physician

    Read our methodology

    Affiliated Hospitals

    • Los Robles Regional Medical Center

      215 W Janss Rd
      Thousand Oaks, CA 91360
      Recipient of 46
      hospital awards

      America’s 50 Best Hospitals for Surgical Excellence Award™ (2025, 2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      America's 250 Best Hospitals Award™ (2025, 2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      82%
      Patients said they were given information about recovering at home

      2% lower than the national average

      75%
      Patients said that nurses always listened to them and explained things well
      View all patient feedback
    • Adventist Health Bakersfield

      2615 Chester Ave
      Bakersfield, CA 93301
      Recipient of 6
      hospital awards

      America's 250 Best Hospitals Award™ (2023)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      85%
      Patients said they were given information about recovering at home

      1% higher than the national average

      77%
      Patients said that doctors always listened to them and explained things well

      1% higher than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality