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Dr. Leo Treyzon, MD

Dr. Leo Treyzon, MD

Gastroenterology*
20+ years of experience

Dr. Leo Treyzon, MD is a gastroenterologist in Beverly Hills, CA and has over 20 years of experience in the medical field. Dr. Treyzon has extensive experience in Pancreatic Disease. He graduated from University of California, San Diego School of Medicine in 2001. He is affiliated with Cedars-Sinai Medical Center. He is not accepting new patients.

4.3 Star Rating
Based on 54 reviews 4.3 Star Rating (54 reviews)

Practice

9454 Wilshire Blvd Ste 510 Beverly Hills, CA 90212

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Hospital Highlight

Dr. Treyzon is affiliated with Cedars-Sinai Medical Center West Hollywood, a highly rated hospital.

At a Glance

  • Area of Expertise
    Dr. Treyzon specializes in the area of Gastroenterology. See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. See reviews
  • Practices at Top Hospital
    America's 100 Best Hospitals Award™ See hospitals
  • Hospital Satisfaction
    Patients said they were highly satisfied at this doctor's hospital. See hospitals
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Dr. Treyzon's Reviews

Likelihood to recommend Dr. Treyzon

4.3
54 ratings, 32 with a written review
5 star
81%
81%
4 star
2%
2%
3 star
0%
0%
2 star
0%
0%
1 star
17%
17%

Your trust is our top concern.

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Dr Treyzon, an oasis of calm, skilled, competence
Extreme thoughtfulness, common sense, professional; he is knowledgable , respectful, and communicates wonderfully. Never rushing and always willing to listen to the patient.
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
What could be improved
No results
Helpful
Earl Goldstein, DMD – Dec 24, 2024
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Caring doctor
I have been putting off getting a colonoscopy, thinking that I was super low risk for cancer. As a compromise, my primary care physician ordered me a Cologuard. Much to my surprised it came back as positive for possible colon cancer. My primary care physician recommended Dr. Treyzon. Dr. Treyzon scheduled me immediately for a colonoscopy, he removed a pre-cancerous polyp and had it biopsied. Fortunately, everything was detected early. I found Dr. Treyzon very caring, very thorough and answered all of my questions. I am very lucky to have found him.
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
What could be improved
No results
1 other person found this helpful
Helpful
GM – Mar 25, 2023
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Amazing and Thorough
I have struggled with GI problems most of my adult life, and they became particularly acute in the last three years. After seeing five other GIs and completing numerous tests, I finally found my way to Dr. Treyzon. He is like a gut detective, following clues, trying new therapies, and listening intently. While I am still struggling, he has uncovered abnormalities missed by other Dr.s and referred to me to relevant specialists. I feel like I have some answers for the first time in a decade, and it is all thanks to his thoroughness and attention. One of the best medical professionals I have ever worked with.
What went well
  • 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
Helpful
Stephen Crutchfield – Jan 11, 2023
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wonderful experience
dr. treyzon was a wonderful experience!! i finally feel like i found someone who is interested in helping me and actually fixing the problem.
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
Helpful
vkf – Dec 03, 2022
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Great doctor and human
Dr. Treyzon is an amazing physician. He is polite, intelligent, competent, and caring. He put me at ease while investigating my complaints thoroughly. His advice was clear and simple. He connected with me and made me feel comfortable. Dr. Treyzon outlined a plan for my care and discussed it with me. He did not rush me and answered all my questions.
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
Helpful
Samer Alaiti – Oct 20, 2022
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Great communication
I had a telemedicine appointment with Dr Trayzon, and he was able to explain the issues with my endoscopy results in a clear and easy to understand fashion, unlike my experience with a previous gastroenterologist. Highly recommended!
What went well
  • Listened & answered questions
  • Explained conditions well
What could be improved
No results
Helpful
Sep 14, 2022
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Excellent Doctor!
Dr. Treyzon and his office were fantastic to me. Thorough, professional, responsive, informative, kind and communicative. Couldn't have asked for better care.
What went well
  • 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
Craig Gillett – Jul 29, 2022
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Best GI Doctor!
I highly recommend Dr. Treyzon! When I had hip surgery with post surgery issues, he took charge when other doctors failed to help. Extremely thorough and very caring.
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
Helpful
Dressage Queen – Jul 27, 2022
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Great Patience
The Dr. was one of the most patient and informed medical visits I have ever had. A combination of knowledge and explanations were a welcome experience. I would recommend Dr. Treyzon. to anyone.
What went well
  • Office environment
What could be improved
No results
Helpful
alan hunter – May 29, 2022
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Wonderful Care
Dr. Treyzon is providing me excellent care, comprehensive knowledge and he takes the time I need to discuss and understand the road to bettering my gut health. I am so glad to have found him and highly recommend.
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
Helpful
Apr 28, 2022
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Outstanding experience
Dr Treyzon is first rate. Referred by my internist for tests, i found him to be smart, friendly, accessible and communicative. His staff is well organized and efficient. His web site and videos also helped explain procedures and reduced any anxieties. The experience was quite positive and I highly recommend.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Wait times
What could be improved
No results
Helpful
George Schweitzer – Mar 28, 2022
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Don’t go to this doctor if you have SIBO. He lacks experience and training.
What went well
  • Appointment scheduling
What could be improved
  • Office environment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
Helpful
Lorraine Silvers – Sep 03, 2021
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Very clean, timely, and professional office. Dr. Treyzon spent a great deal of time with me and was exceptional at explaining procedures, etc. with me. Great communication skills and extremely knowledgeable. Excellent experience.
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
Helpful
Alison – Aug 12, 2021
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After seeing countless doctors with no explanation to my GI symptoms I decided it was time to find someone who could actually help me. That is how I found Dr. Treyzon. I would definitely recommend him to anyone with a complex GI disorder. Dr. Treyzon is extremely knowledgable. He will take the time to listen to you and help you. He will set up a game plan and make sure you are not alone in the process. I have nothing but good things to say about him and his staff. He is definitely the best!
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
Helpful
May 06, 2021
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Hate writing bad reviews but this is justified and I want to contribute to the COVID fund you are promoting. No I would never refer this Dr to family or friends. I paid 500.00 cash for my appointment. He was dismissive of my concerns, which caused me to lose a lot of weight - asked “why does it bother me;”that many people would like to “be like me.” He tried to backtrack when I expressed my surprise that he did not understand my feelings. Told a friend about my bad (and expensive) experience with him, and she told me a client of hers did not like his demeanor with her as well.
What went well
No results
What could be improved
  • Office environment
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
3 others found this helpful
Helpful
Apr 28, 2021
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Dr. Treyzon is a fantastic physician. After months of poor treatment with a different doctor, Dr. Treyzon was able to quickly diagnose me and provide treatment. As I continue to work with Dr. Treyzon, he has taken the time to answer all of my questions and concerns actionably - within or under 24 hours through the elation passport website - and think about the future development of my gut health. I cannot recommend him enough and have been telling all family and friends with gut issues to see him. Erudite and a class act.
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
Helpful
Samuel Konsker – Mar 18, 2021
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I don't understand how can this doctor sleep at night. He is "out of network" and charges $650 for "initial consultation"!!!! This is immoral and plain wrong! Doctors are supposed to help people and they made an oath to cure people not to get rich from them! Shame!
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Didn't trust the provider's decisions
4 others found this helpful
Helpful
Jan 06, 2021
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He’s the best! Cured me after years of suffering with my stomach.
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
Doris Weitz – Aug 19, 2020
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During our consultation Dr. Treyzon asked me questions that were both intelligent and thoughtful. I most valued in him were what I was least expecting from a hot shot Cedars specialist: being that his office did not work w/ my insurance provider, he was extremely considerate in ordering just the amount of tests I needed and preemptively told me ways I could get pricing information. He was not condescending, he was in no rush, and more than happy to answer all of my (million) follow up questions right then and there. The testing processes could not have gone more smoothly or rapidly. I was diagnosed (w/ what he had suspected) about 48 hours later. The doctor took additional time to research some of my past symptoms and share useful results w/ me. His office referred me to a phenomenal pharmacy that helped again w/ insurance, and in the following days the doctor patiently--and immediately--fielded all my follow up questions through the online portal. All in all totally outstanding.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Adam – Aug 14, 2020
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Avoid at all costs ! First off they charge new patients $650 for a consultation upfront! I argued with the receptionist as to why I should pay upfront if I don't know what to expect from the visit. Secondly, the visit lasted at most 30 min with Treyzon, the beginning was with his attendant. He even instructed me to continue with my current care as he does not specialize in my condition when in fact his website states that it's his specialty. I went there to also consult on an appropriate diet but was instructed to read a book on SCD and did not receive any explanation on the matter; something I can do myself by simply typing on a Google Search. For those writing that he is a miracle doctor and giving all these 5 stars reviews please message me and I will redirect you towards the real 5 stars GI & IBD doctors. I've had my fair share of doctors to know who are deemed to merit these accolades. I've been part of clinical trials for some of today's mainstream medications to know a thing or
What went well
No results
What could be improved
  • Didn't explain conditions well
  • Staff wasn't friendly
  • Appointment was rushed
  • Didn't trust the provider's decisions
4 others found this helpful
Helpful
Jul 16, 2020
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How was your experience with Dr. Treyzon?

About Me

care philosophy

Provide highest quality care focusing on wellness, preventive health, and early diagnosis. We use multiple treatment approaches, including nutrition and medications. We perform all standard endoscopic procedures including colonoscopy, upper endoscopy, and wireless pill capsule endoscopy.
  • Gastroenterology

  • Internal 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.

  • Ucla Masters Of Science In Clinical Research-nutrition

    2008
  • Ucla Medical Center

    Fellowship Hospital, 2008
  • University Of California, Los Angeles David Geffen School Of Medicine

    2008
  • Cedars-sinai Medical Center

    Internship Hospital, 2002
  • University Of California, San Diego School Of Medicine

    Medical School, 2001
  • Ucsb

    Undergraduate School, 1996
American Board of Medical Specialties®
American Board of Internal Medicine®
Gastroenterology
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

Locations

Practice

Leo Treyzon M.D. Inc.9454 Wilshire Blvd Ste 510 Beverly Hills, CA 90212
1
Donna M. Gallik8631 W 3rd St Los Angeles, CA 90048
2

Affiliated Hospitals

  • Cedars-Sinai Medical Center

    8700 Beverly Blvd
    West Hollywood, CA 90048
    Recipient of 37
    hospital awards

    America's 100 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

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

    83%
    Patients said they were given information about recovering at home

    1% lower than the national average

    79%
    Patients would recommend the hospital to friends and family

    14% higher than the national average

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