Professional Summary

Professional Education
  • Board Certification: American Board of Family Medicine, Family Medicine (1982)
  • Residency: North Carolina Baptist Hospital (1982) NC
  • Internship: NCarolina Baptist Hospital (1980)
  • Medical Education: State University of New York (1979) NY


Practice Locations

Stanford Primary Care in Portola Valley Portola Valley, CA
Portola Valley, CA

3250 Alpine Road

Portola Valley , CA 94028

(650) 498-9000

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Patient Ratings

(153 Ratings)

Overall Rating

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Friendliness/courtesy of the care provider
Explanations the care provider gave you about your problem or condition
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Care provider's efforts to include you in decisions about your care
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The Patients Ratings and comments are gathered from our Patient Satisfaction Survey and displayed in their entirety.

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Patient Reviews

(113 reviews)

Dr. Jernick is exceptional. when i arrive i am often flustered and stressed. Dr Jernick is always calm, has a very nice way, and always asks how i'm doing and listens very attentively to my answer. i have complete confidence in his knowledge and treatment. i never feel rushed, and when i leave my mind is at rest.
Jay Jernick, MD has been my primary care provider for over 30 years. I am the luckiest person to be under his attentive and compassionate care.
Dr. Jernick is an outstanding physician. Excellent diagnostic skills. Excellent interaction skills.
Dr Jernick is the best always takes time for all questions and answers them so I understand what's going on
No issues, went well.
Dr. Jay Jernick is the very best ever!! I worship his care and guidance!
My doctor, Dr. Jay is my family. He explains everything to me in a basic way that I understand his instructions about how I am, my treatments and medications.
Everything perfect
Dr. Jernick is an excellent doctor. Explained everything and now my trigger finger is not painful anymore. He is more than 5 stars.
Very good.
appreciate the conversational style, no judgement, providing choices on next steps in care
An impressively encouraging & informative appointment. Very appreciative.
Doctor Jernick is outstanding. There is no compare. We have been patient for last 30 yrs.
DR. Jernick has always been wonderful. I have every confidence in his opinions.
Dr. Jernick is the best!
Dr. Jernick is best doctor I have ever had.
Dr. Jernick is best doctor ever.
Dr. Jernick is amazing! I love that he listens to my medical issues but always ask if anything else in my life has changed. Also, he's a great listener and it always surprises me that he remembers things I told him 5 ears ago.
Dr. Jernick always shows interest any my family history and any concern I might have.
Did not feel rushed very comfortable and professional but easy to talk too.
Our family has been seeing Dr Jernick for 17 years and he is always kind, engaged, thoughtful, and takes time to make you feel really heard and cared for.
Dr. Jernick is the best physician I have ever encountered, very grateful to be his patient!
Dr. Jernick is an excellent doctor. Listens, understands, explains.
dr. Jernick has been an excellent source of wisdom and comfort in the past 23 years which he's been my primary care provider. he is the best.
Dr. Jernick has been our family physician for 30+ years. I would follow him to the ends of the earth for his excellent care. Fortunately he remains at Stanford so I will see him as my doc for as long as possible.
Dr. Jernick should be the role model for all the student doctors. He is patient, understanding, explains things very clearly, never appears to be in a hurry, and listens very carefully to any questions or concerns. I am so grateful to have Dr. Jernick as my primary care physician. i trust him completely.
Dr. Jernick is by far the best general practitioner at Stanford Family Health. He is very perceptive and deeply concerned about his patient's well-being.
Dr. Jernick is a wonderful doctor. Caring and very knowledgeable. He will also tell you if he's unsure, we (my husband and I) are just so lucky to have him as my doctor. We've been with him for many years.
Dr. Jernick is a paragon of a good doctor. Simply the best.
Dr. Jernick is always very nice and very helpful.
Dr. Jernick, my former and now future PCP, had studied my chart prior to the visit, and offered to keep an eye on all future treatment for my problem. Very consoling!
Dr. Jernick is the finest doctor I have ever met.
Dr Jernick has been our family doctor for 35 yrs. He has always show extraordinary concern for us and provided the highest level of care.
Has been my care provider since 1985. He is considerate, competent. I have recommended him to my wife and 3 friends who have been his patients for over 25 years now.
I trust Dr. Jernicks judgment absolutely. His approach is common sense & practical -
Exceptional in every respect.
Dr. Jernick is excellent.
I have complete confidence in Dr. Jernick's medical skills and most importantly his judgment.
Dr. Jernick has been our family physician since 1989. We are fortunate and grateful to be under his care.
Dr. Jernick is the best GP I've had since moving to Stanford from Kaiser. I have extreme confidence in him.
Dr. Jernick is a great doctor. I am fortunate to have him as my primary care doctor.
Dr. Jernick is an excellent care provider.
Dr. Jernick is exemplary! I feel so lucky to have him as my PCP. I have never had an MD in the past who was so caring and thorough. He makes me feel at ease and there is always two-way communication. Together, we have teamwork in care.
Dr. Jernick is extraordinary in every way -
Dr. Jernick has a great manner.
I am very please with the care I receive from Dr. Jernick.
Dr. Jernick is ABSOLUTE TOP NOTCH. Don't retire. Can't do without him.
I have been a patient of Dr. Jernick for at least 30 years. Before becoming a patient I must have visited/tried lots of physicians at various clinics and hospital in the Santa Clara and San mateo counties. I have recommended him to friends and now my wife and 4 friends are his patients. I have jokingly told him never to retire as I would be lost, medically and healthwise if he does.
Dr. Jernick is an excellent and outstanding care provider. I have high confidence and always look forward to conversing with him about my health and any problems I may have at the time. He is courteous and friendly and always keep you at ease. I will highly recommend him to others. He provides excellent care.
Dr. Jernick is an outstanding care provider. I will not hesitate to recommend him to others.
I don't have words to say about Dr. Jernick. He is exceptional going to him last 24 years. By all means we recommend him.
very good
Dr.Jernick is awesome. He always make you feel like he is listening and concerned.
Dr Jay is the best!
Excellent care & concerned follow up!! Thank you.
Dr Jernick provides outstanding care
Dr. Jernick has a terrific "bedside manner."
Dr. Jernick is a world class physician. He has been my family doctor for over 30 years. He listens well and takes in all information. His advice on my health issues has always been spot on. I have complete confidence and trust in him on all my health issues.
Dr. J is very caring & has been my family's care provider for about 20 yrs.
Dr jernick was very helpful - later sent me links with information that was valuable to me
I have had Dr. Jernick as my doctor for several years and think he is outstanding!
Dr. Jernick is the best.
I feel like I'm in very good hands with Dr. Jernick. He is thorough, detail oriented, so knowledgeable, determined to help, and delivers with great efficiency. I feel as though I can talk with him about any concerns or issues and be made to feel like we are all part of a team in charge of my healing process. I can joke around with him, too. That's a good thing.
Excellent doctor!
Excellent doctor. Very caring, horrible always treat with positive attitude.
Dr. Jernick has been our family physician for nearly 30 years. He cares for us all profoundly and we have thrived under his watch.
He could not be BETTER!
Jay listened carefully to the (long) list of symptoms, asked good questions, did an exam, and figured out that the symptoms were not caused by recent medications (as we had suspected), but an old one. I felt better within days of discontinuing it. Jay's been my doctor for many years, because he is by FAR the best I've ever met. His medical skills are clearly excellent, but his social skills are truly exceptional, which multiplies the positive effect of seeing him. I feel listened-to and well-cared for in a warm and welcoming way, and he genuinely respects me and my intelligence (even when I've been too ill for it to manifest itself).
Excellent visit with Dr. Jernick.
Dr Jernik is a very caring person
Dr. Jernick is wonderful & appreciated!
Dr Jernick was very helpful
Exceptional great Doctor.
Dr. Jay has been my doctor my whole life. I trust him and his staff completely!
Dr Jernick is outstanding. I appreciate his willingness to discuss my care, discuss options citing research and my risk factors.
John is "the man!" John Jernick
Dr. Jernick is very easy to communicate with.
Dr. Jernick is the very best....
All of my doctors at Stanford are outstanding. I am very confident that if Stanford Healthcare cannot save my life than no one can. Specially Dr. Jonh Jay Jernick is our family doctor for almost 25 years. We always respect his advice. We are lucky to be his patients.
Dr. Jernick is the best of the best of the best. I have so much respect for him and the quality of care he provides.
Dr. Jernick has always been very aware of my health and listens to my concerns. Dr. Jernick has become our family doctor as I would want the best for me and my family. He's also very personable and never rushes my appointments.
Dr. Jay Jernick is the best dr. I have ever had! I travel 1 1/2 hours to see him.
Dr. Jernick has my complete confidence. I've been a patient of his for over 30 years.
Is there a "10" score? This MD is tops in knowledge, skills, and "bedside manner!" I never feel rushed and always feel heard.
This provider is superb. I had recommended him to my wife (a patient), and my friends, a lot of whom are his patients.
Dr. Jernick is awesome!
Top notch - as Dr Jernick's care has always been over the many years he has been my Primary Care Dr
Dr. Jernick AND his staff are the best. You never feel rushed and always I feel that I matter to my doctor & his staff!
I have always had excellent care from Dr. Jernick
Dr Jernick is very good and very thorough and understanding. He is a very good doctor and a great human being!
After 30 years with this doctor I am used to him giving me proactive advice on my health and well being. He has demonstrated through the years devotion to providing me with the very best health care and has shown concern for me as a person too. I have recommended my co-workers and friends and my wife to him and they are among his patients.
Dr Jernick is an excellent doctor, he has been my primary care physician for years, and I feel very comfortable with him and trust his judgement. He is always ready to respond to my concerns and answer my questions to my satisfaction.
Provider has been health care provider for more than 25-30 yrs. cares for whole family.
Don't have bad experiences at Fam Practice
He's been my provider since I was born (27 years ago!). I always feel confident and satisfied whenever I visit.
Dr. Jay Jernick is a very excellent provider. He cares for his patients.
Dr. Jernick is an exceptional clinician. My hope is that he remains my doctor for decades to come.
The care provider is always friendly, courteous, and attentive to issues/medical question that are being discussed and give detailed instructions/recommdations. I have the utmost confidence with him and will definitely recommend him to others.
The appointment in question was for an annual physical exam. Generally, the care provider was thorough and helpful. However, I am still waiting to receive instructions for follow-up care on one issue.
This doctor was a substitute for my Doctor Gross who was sick, but the doctor was efficient and treated me as if he were my own doctor for a long time.
Dr John Jay Jernick is the best physician I have ever known.
Dr. Jernick is the best, he has no faults. Would highly recommend him to everyone.
Love to see Dr. Jernick my family doctor.
Wonderful physician.
By far, Dr. Jernick is the single BEST and MOST SKILLED/KNOWLEDGEABLE physician I have known - He is simply superb!!!
Awesome doctor!
Dr. Jernick is, simply, the best.
Dr. Jernick is an amazing care provider, on all sides - personal, clinical, ALL.
Dr John Jernick he is best doctor of all.
Dr. Jernick is great!!

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