Laurence Katznelson, MD received his medical degree from the University of California, Los Angeles and performed his internship and residency in Internal Medicine at the Hospital of the University of Pennsylvania, Philadelphia. He then performed a fellowship in Endocrinology and Metabolism at the Massachusetts General Hospital, Boston. Dr. Katznelson is a Professor of Neurosurgery and Medicine (Endocrinology)at Stanford University School of Medicine. At Stanford University, he is the Associate Dean of Graduate Medical Education and the Chair of the GME Committee. Dr. Katznelson is the Medical Director of the Pituitary Center at Stanford Hospital and Clinics. He is the medical director of the Pituitary Stanford, Stanford HealthCare. In endocrinology, Dr. Katznelson has a long standing clinical and research interest in the pathophysiology and treatment of pituitary disease.

Professional Summary

Professional Education
  • BS, U.C., Berkeley, Genetics (1981)
  • MD, UC, Los Angeles, Medicine (1985)
  • Internship: Hospital of the University of Pennsylvania (1986) PA
  • Residency: Hospital of the University of Pennsylvania (1989) PA
  • Fellowship, Massachusetts General Hospital, MA, Endocrinology and Metabolism` (1992)
  • Board Certification: American Board of Internal Medicine, Internal Medicine (1988)
  • Board Certification: American Board of Internal Medicine, Endocrinology, Diabetes and Metabolism (1991)
  • Board Certification, Endocrinology, Diabetes and Metabolism, American Board of Internal Medicine (2013)

Honors & Awards
  • 2017 Laureate Award for Educator of the Year, The Endocrine Society (2017)
  • Best Doctors in America, Best Doctors (2005-)
  • H. Jack Baskin, MD, Endocrine Teaching Award, American Association of Clinical Endocrinologists (2015)

Administrative Appointments
  • Associate Dean of Graduate Medical Education, Stanford School of Medicine (2014 - Present)
  • Chair, Graduate Medical Education Committee, Stanford Healthcare (2014 - Present)
  • Chair, Special Programs Committee, Endocrine Society (2008 - 2011)
  • Director, Endocrinology Fellowship Training Program, Stanford Healthcare (2005 - 2014)
  • Medical Director, Pituitary Center, Stanford Healthcare (2004 - Present)


Practice Locations

Pituitary Center Palo Alto, CA
Palo Alto, CA

Stanford Neuroscience Health Center Stanford, CA
Stanford, CA

213 Quarry Road

Stanford , CA 94305

(650) 723-6469

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Skull Base Surgery Program Palo Alto, CA
Palo Alto, CA

213 Quarry Road

Palo Alto , CA 94304

(650) 497-7777

Make An Appointment More Clinic Information » Getting Here »

Patient Ratings

(33 Ratings)

Overall Rating

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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
Clear Communication
Degree to which care provider talked with you using words you could understand
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Your confidence in this care provider
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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

(88 reviews)

Both the doctor and NP were engaged, listened well, and left me feeling they really cared.
NP and dr. among the finest people and care providers I've ever met (and I've met a great many).
Dr. Katznelson is an outstanding dr.
Doc Katznelson and staff are wonderful especially his PA Olivia. She always gets right back to me and gets thing taken care of right AWAY.
Item 10 many times.
I felt uncomfortable about our communication. I did not feel that my concerns were addressed or HEARD. I felt that the doctor had a preconceived agenda and was pushy, rather than helping me to have all the information to take the lead in determining my best course of action, aligned with my values & beliefs.
Is there another doctor as GREAT as Dr. Katznelson... NEVER.
Dr. K - great as always!
I would absolutely recommend Dr. Katznelson. He is a great dr./person and so is Olivia Chu.
I am delighted with Dr. Katznelson and his team-
I am glad Dr. Katznelson accepted me as a new patient. The doctor and physician assistant answered my questions and concerns very patiently during my first visit to the clinic.
Always tell my clients the great experiences I have, during all my appts. & surgery.
Dr. Katznelson is one of the best physicians I have ever worked with ever.
Yes all professional.
Olivia CH-NP & Dr. Katznelson make an excellent partnership & their years together is evident & optimal in care provided.
Dr. Katznelson has treated me since 2013 - every visit with him has left me feeling (and knowing) that I am receiving the best and highest level of care possible. I am honored and grateful to be his patient.
Always a good visit, well informed both by the doctor & PA. 1. Oliva is wonderful.
Dr. Katznelson noticed a change in my weight as a positive outcome to my surgery. He has always showed so much concern with me. I owe him my life. Thank you.
Dr. Katznelson does an outstanding job of putting one at ease and has outstanding communication skills. I feel blessed he is my physician.
Dr. Katznelson is exceptional doctor.
Wish Dr. Katznelson could be rated MORE THAN 5! He is an incredible physician, and friend as well -
Dr. Katznelson is very thorough!
I am so thankful for Dr. Katznelson and his entire team! What an amazing staff!
For me, he's the best doctor at Stanford. A real detective. I was spared surgery because of his expertise & thoroughness.
Dr. Katznelson is an excellent doctor who is caring and very helpful.
He was excellent!
The doctor verbalized my next visit, my next step. The doctor briefly summarized that's next and listened. The nurse didn't nor did she need to.
Dr. Katznelsonis one of the most outstanding care givers with whom I have had experience. His knowledge, patience and perseverance have helped me immeasurably!
Very very good and more than excellent thanks.
Excellent care and support.
Dr. Katznelson goes above and beyond.
Dr Katznelson spent 30+ mins with me.
Dr. Katznelson was great! Knowledgeable & caring.
Doctor Katznelson and his team are awesome. I owe my good health to him & Olivia Chu. I am forever grateful for their care and time they take to help me.
Dr. Katznelson is an excellent doctor. He is an excellent listener and really cares about how my husband (the patient) is doing. He is compassionate.
I wanted to get a second opinion regarding my treatment plan from a non-Stanford doctor. After my experience with Dr. Katznelson, I feel confident in transferring my care to him.
Dr. Katznelson is awesome! & Olivia too.
As always- great care all around. Like family!!
The care provider called me the next day just to follow up on the information given to me and make sure I was able to get the medication an if I had any questions about the meds.
I've realized I have to do my homework so I know what to ask. Knowledge is not forthcoming automatically. Lab work was recommended at visit. No one followed thru.
All good.
Dr. Laurence Katznelson is everything a patient would want in a doctor. He is extremely knowledgeable, and he genuinely cares about providing.
Dr. Katznelson and his staff are all wonderful! They're so wonderful, that I drive 3 hours just to see them... when needed!
I tell people that Stanford is only place to get care.
have already sung your praises to friends
Very good!
Love my doctors!
Dr. Katznelson is an excellent doctor who has helped my husband a lot. His nurse, Olivia Chu, is also very helpful.
The dr. is amazing!
Dr. Katz-Nelson is the very best. I wish he were my regular internist for my total health situation.
Dr. Katznelson is an outstanding physician. He is an excellent communicator and extraordinarily kind and compassionate.
Stanford Hospital should be proud to have such a awesome doctor and team treating patients.
The NP actually called me to go over results of lab work and explained everything in terms I could understand. I appreciated it very much.
Great experience.
Spent 45 mins!!
Doctor Laurence Katznelson and NP Olivia Chu area great in their patient care and explanations!
He is an excellent doctor who REALLY cares. He has helped my husband tremendously.
We love Dr. Katznelson he is awesome!
Overall very good.
Kindness and cleanliness. Excellent.
Very comfortable atmosphere.
I am very happy with the staff, and hospital. I am in the best of hands.
The experience was very good attention and amiable from all personnel thank you very much.
I like that the MD has a consistent (same NP) & not a high turnover - important for continuity of care.
Felt my visit this time was very rushed. Usually it is better.
Wish I lived closer so I could see him again! Great assistants as well!
I had a very good experience with Dr. Katznelson. Knowledgeable, easy to talk to, patient. Very impressed.
Excellent experience.
Dr. Katznelson epitomizes why Stanford is so highly regarded.
The PA or resident on the case was very thorough and spent a lot of time w/me. Good experience.
Dr. K makes me feel special and he's like family & we've gone through so much together. I am alive because of him!
Best doc - spent 45 minutes. Great bedside manner. Dream doctor.
Dr. Katz and Olivia his PA are an excellent caring team.
Dr. Katznelson has the greatest patient-doctor rapport that I know of.
Very friendly love them.
Dr. Katznelson is an amazing, empathetic physician!!! We need to clone him.
Dr. Katz is an awesome dr. He is very caring -
Fellow was great to deal with listened very carefully. Physician was well informed by fellow - also caring.
I found this care provider awesome. He was able to point out things from an old MRI not told before.
Dr. Katznelson & Olivia Chu are great. Enjoy talking with him & her.
I was sent to Dr. K. by referral. A very stressful time due to my diagnosis, and all the staff was great!
Dr. Katz-Nelson is exemplary in every way!! Extraordinary.
How rare to find a dr. who admits "I'm not sure" and explains steps to be taken together to find an answer. Refreshing and inspiring.

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