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Jason Robert Jeffery

Jason Robert Jeffery, MD

Internal Medicine

Online Booking
Video Visit
5.0 of 5 stars413 ratings, 63 reviews
Need help scheduling? Call 209-536-3820

Highlights

Age Groups Seen

  • Adult 21-65
  • Older Adult >65

Languages

  • English

Gender

Male

About Jason Robert Jeffery

About The Provider

Jason Jeffery, MD, began caring for patients in Sonora in 2014, after completing his residency at Santa Clara Valley Medical Center and earning the Resident Consultant of the Year Award. Prior to medical school at Loma Linda University School of Medicine, while obtaining his Master’s in Biology, Dr. Jeffery found he wanted to work with people. He then discovered and settled on Internal Medicine. “I love the outpatient side because of the continuity of care,” says Dr. Jeffery. “I also enjoy being able to be a part of a patient’s long-term healing. I want to share advice and recommendations in order to maximize the patient’s health as best we can together and to make a difference by connecting the patient with the resources they need to be healthy.”

Provider Type

Physician

Locations

  1. Adult Medicine: Adventist Health Sonora

Expertise

Education

Loma Linda University School of Medicine

Medical School

Santa Clara Valley Medical Center

Residency Program

Board Certifications

Internal Medicine

American Board of Internal Medicine, 2010

Insurance

Please contact the practice directly to confirm your health plan is accepted.
Search plans
  • Aetna
  • Anthem Blue Cross
  • Anthem MediCal
  • Blue Shield
  • CA Health & Wellness
  • Cigna
  • HealthNet
  • Medi-cal ORP1
  • Medicare AHSR Part B
  • Stanislaus Foundation (AHSR)
  • Tricare
  • TriWest
  • UHC
  • Western Growers (AHCL) (AHSR)

Ratings & Reviews

5 out of 5

413 ratings, 63 reviews

The provider star rating is calculated using patient responses to the five care provider questions in our patient satisfaction survey. Below you can see the provider’s star rating and the number of his or her patients who have provided feedback.

Provider explained things clearly
Provider showed concern
Provider included you in decisions
Likelihood of recommending this provider
Provider discussed treatment options
Search reviews
    5 out of 5 stars
    Reviewed on 9/18/2025

    I happened to go to Safeway after seeing Dr. Jeffery, and ran into a gentleman that I didn't know (who said he was also a patient of Dr. Jeffery), and we spent a few minutes talking about how wonderful the doctor is, how he listens to patients, and is very thorough, and more. We agreed that we feel blessed to be his patients and hope we can stay with him forever.

    5 out of 5 stars
    Reviewed on 9/16/2025

    Dr Jeffery is an outstanding listener, communicates in My opinion from the Heart. Excellent again.

    5 out of 5 stars
    Reviewed on 9/11/2025

    Every one wants to be Dr. Jeffery patient. He's very nice, compassionate, and really care.

    5 out of 5 stars
    Reviewed on 9/9/2025

    Dr. Jeffery is so kind and caring and he truly cares about your overall well being.

    5 out of 5 stars
    Reviewed on 9/9/2025

    Dr. Jeffery is so caring. Always takes the time to explain and answer any questions.

    5 out of 5 stars
    Reviewed on 8/23/2025

    Best Dr i've had

    5 out of 5 stars
    Reviewed on 7/31/2025

    Always listens to you and tries find the best way to help with your problems

    5 out of 5 stars
    Reviewed on 7/22/2025

    Dr Jeffery is the best, hands down.

    5 out of 5 stars
    Reviewed on 7/19/2025

    Outstanding primary care physician.

    5 out of 5 stars
    Reviewed on 7/18/2025

    Dr. Jason Jeffrey is the best! He is the perfect physician- he is respectful, kind, a good listener and troubleshooter. I trust him implicitly.

    5 out of 5 stars
    Reviewed on 7/10/2025

    Dr Jeffery is an excellent physician. The best physician I ever had taking care of me.

    5 out of 5 stars
    Reviewed on 7/10/2025

    Very good experience

    5 out of 5 stars
    Reviewed on 7/9/2025

    Dr Jeffery listens to every word I say and remembers at my next appt. I'm 74 and have had great doctors and not so great doctors. Dr Jeffrey Is over them by a mile. And he smiles!!!

    5 out of 5 stars
    Reviewed on 6/11/2025

    Always listens to me and answers my questions

    5 out of 5 stars
    Reviewed on 5/30/2025

    Dr Jeffery is a good listener and is thorough with his care.

    5 out of 5 stars
    Reviewed on 5/30/2025

    Dr. Jeffery is such a kind, caring and very knowledgeable Doctor. I am truly blessed to have him as my Doctor.

    5 out of 5 stars
    Reviewed on 5/29/2025

    Dr. Jeffery displayed wonderful attention to hearing me and showed he cared about the progress I hope to make soon.

    5 out of 5 stars
    Reviewed on 5/24/2025

    Always a good experience because I know Dr Jeffery "has my back!"

    5 out of 5 stars
    Reviewed on 5/23/2025

    Jeffery's is always a good listener

    5 out of 5 stars
    Reviewed on 5/22/2025

    He never tries to leave early or looks at his watch. Just the best Doctor

    5 out of 5 stars
    Reviewed on 5/19/2025

    Dr. JEffery is a wonderful and caring physician.

    5 out of 5 stars
    Reviewed on 5/17/2025

    Dr. Jeffery is the most engaged physician I have had my adult life. I appreciate his bedside manner and intent interest in my health care.

    5 out of 5 stars
    Reviewed on 5/12/2025

    Dr. Jeffery always takes the time to listen to my concerns or Answer my questions .

    5 out of 5 stars
    Reviewed on 5/7/2025

    Dr Jeffery is one of the most caring and knowledgeable doctors I've had the pleasure of being a patient of.

    5 out of 5 stars
    Reviewed on 4/30/2025

    Dr. Jeffery is the greatest doctor who really cares about my health

    5 out of 5 stars
    Reviewed on 4/25/2025

    Dr.Jeffery isTHE BEST!! So thoughtful, compassionate, and knowledgeable.

    5 out of 5 stars
    Reviewed on 4/18/2025

    Dr Jeffery as always a good listener!

    5 out of 5 stars
    Reviewed on 4/11/2025

    Dr Jeffery truly cares about his patients and provides excellent care. He always listens and answers every question. Even though I know how busy he is, I never feel rushed.

    5 out of 5 stars
    Reviewed on 3/28/2025

    Dr Jeffery is the best physician I ever had.

    5 out of 5 stars
    Reviewed on 3/21/2025

    Dr Jeffery's virtual visit went smoothly. He was able to see my eye and send a prescription to a pharmacy for me.

    5 out of 5 stars
    Reviewed on 3/21/2025

    Dr Jeffery and his nurse are consistently kind, courteous and competent.

    5 out of 5 stars
    Reviewed on 3/13/2025

    Would not trade Dr Jeffery for anything

    5 out of 5 stars
    Reviewed on 3/9/2025

    All experiences with Dr. Jeffery have been very prompt and professional for me.

    5 out of 5 stars
    Reviewed on 3/6/2025

    My trust of Dr Jeffery is 100%

    5 out of 5 stars
    Reviewed on 3/4/2025

    Outstanding doctor that cares and knows what is needed!!!

    5 out of 5 stars
    Reviewed on 2/25/2025

    I have the utmost respect for Dr Jeffery

    5 out of 5 stars
    Reviewed on 2/20/2025

    Dr. Jeffery is the BEST

    5 out of 5 stars
    Reviewed on 2/20/2025

    Dr. Jeffery was very prepared for my appt. He followed up on 4 issues & I was so impressed.

    5 out of 5 stars
    Reviewed on 2/20/2025

    Dr. Jeffery is so kind and wanting to help whatever issue I have and he always listens to me.

    5 out of 5 stars
    Reviewed on 2/7/2025

    Dr Jeffery is on of the best doctors I have ever seen. Very thorough, knowledgeable and cares about the patients he sees.

    5 out of 5 stars
    Reviewed on 2/6/2025

    Dr. Jeffery is the best!

    5 out of 5 stars
    Reviewed on 2/6/2025

    Doctor listened to all my concerns and addressed them.

    5 out of 5 stars
    Reviewed on 2/3/2025

    Dr Jeffery is just the best doctor ever very caring and so thorough

    5 out of 5 stars
    Reviewed on 1/31/2025

    Dr Jeffery is excellent by any measure.

    5 out of 5 stars
    Reviewed on 1/15/2025

    Dr Jeffery is great.

    5 out of 5 stars
    Reviewed on 1/8/2025

    Dr Jeffery is very capable and empathetic in dealing with his patients.

    5 out of 5 stars
    Reviewed on 12/21/2024

    Dr.Jeffery is an outstanding physician!

    5 out of 5 stars
    Reviewed on 12/19/2024

    Dr Jeffrey is the most thorough, kind and caring doctor I've ever had in my 69 years of life. I am so grateful for him.

    5 out of 5 stars
    Reviewed on 12/7/2024

    Dr Jeffery is outstanding.

    5 out of 5 stars
    Reviewed on 12/6/2024

    Dr. Jeffery is very knowledgeable. He is more than caring and compassionate.

    5 out of 5 stars
    Reviewed on 11/27/2024

    Best Doctor ever.

    5 out of 5 stars
    Reviewed on 11/16/2024

    It's always a good experience with Dr. Jeffery.He asks questions & listens to what I have to say & addresses any concerns I may have.He's one of the best Doctors I have ever had!

    5 out of 5 stars
    Reviewed on 11/12/2024

    Excellent and professional and caring experience

    5 out of 5 stars
    Reviewed on 11/9/2024

    Always thorough.

    5 out of 5 stars
    Reviewed on 11/8/2024

    Dr.Jeffery is never in a hurry. He is very attentive and listens to every concern I might have. My husband and I are very blessed to have him as our primary Doctor

    5 out of 5 stars
    Reviewed on 10/24/2024

    Dr. Jeffery is a very good listener & he puts patient input first.

    5 out of 5 stars
    Reviewed on 10/23/2024

    Dr.Jeffery has always been a very caring physician. He is very good about explaining all his concerns. He listens good and don't make me feel rushed. He will follow up with my messages Dr.Jeffery shows he cares and is very good about providing what he needs to address my care.

    5 out of 5 stars
    Reviewed on 10/22/2024

    Dr Jeffery was a wonderful listener, asked very pertinent questions and was thorough in going over my history! Excellent patient T skills!

    5 out of 5 stars
    Reviewed on 10/17/2024

    First-rate care!

    5 out of 5 stars
    Reviewed on 10/16/2024

    Dr Jeffery is an excellent physician. He is very knowledgeable and includes me in decisions andAlways takes time to explain things carefully.

    5 out of 5 stars
    Reviewed on 10/16/2024

    Dr. Jeffery eased my anxiety regarding my medical conditions. He has excellent communication skills and has genuine concern for my well-being. He educates you with his explanations and makes sure you understand. I feel blessed that he Is my Doctor.

    5 out of 5 stars
    Reviewed on 10/11/2024

    Dr Jeffery is the best!

    5 out of 5 stars
    Reviewed on 10/10/2024

    Dr Jeffery is the ultimate physician. He always puts me at ease and makes it easy and comfortable to have a personal discussion. I am lucky to have such a great doctor