Accepting new patients
Mark E. Hall, MD
- Rheumatology
Average rating:
5.0
Star ratings are displayed only for those physicians who participate in UCLA Health’s patient experience survey program and have received a minimum of 30 survey responses.
Westlake Village Triunfo Primary & Specialty Care
|
141 Triunfo Canyon Road, Suite 110
Westlake Village,
CA
91361
US
Languages
Education
Medical Board Certifications
Rheumatology, American Board of Internal Medicine, 2020
Internal Medicine, American Board of Internal Medicine, 2018
Fellowship
Rheumatology, University of Texas Health Science Center at San Antonio, 2020
Residency
Internal Medicine, University of Texas Health Science Center at San Antonio, 2018
Degree
MD, Texas Tech University-Paul L Foster School of Medicine, 2015
Locations
Conejo Valley
Westlake Village Triunfo Primary & Specialty Care
Westlake Village Triunfo Primary & Specialty Care
Family Medicine| Internal Medicine| Rheumatology
+6 more specialties
Hospital Affiliations
Ronald Reagan UCLA Medical Center
Insurance
- Aetna
- Anthem Blue Cross
- Blue Shield of California
- Centivo
- Cigna
- First Health
- Health Net of California
- Interplan (part of HealthSmart)
- Medicare Advantage
- MultiPlan
- UFCM Health System
- Prime Health Services
- Private Healthcare Systems (PHCS)
- TRICARE
- UnitedHealthcare
The list of healthcare plans above may not be comprehensive and could change.
Please contact your benefits coordinator or health insurance company directly to verify coverage.
Visit our health insurance information page for more details.
Reviews
Overall rating:
5.0
Star ratings are displayed only for those physicians who participate in UCLA Health’s patient experience survey program and have received a minimum of 30 survey responses.
261 total ratings |
183 reviews
5.0
September 25, 2026
I love Dr Hall? he is always answering my concerns
5.0
September 25, 2026
Dr. Hall was one of the finest physicians I’ve ever seen he listened. He was caring. He was extremely knowledgeable and he gave me the time that I felt I needed. Can’t ask for any more than that.
5.0
September 24, 2026
Great service and knowledge
5.0
September 22, 2026
It was a zoom call with Dr. Hall that went very well. I had done some of my homework on AI, and Dr. Hall wanted me to change t my calcium medication. He gave me a question to ask AI to verify and Dr. Hall was spot on. I made a copy of the AI conversation and dropped it off at Dr. Hall’s office.
5.0
September 22, 2026
Dr Hall is a very thorough and precise physician. We had an informative discussion about my test results. I received great advice about my diet and adjusting the amount of supplements in order to keep everything in the normal range while improving my condition.
5.0
September 17, 2026
Dr. Hall took time to listen and was extremely thorough.
5.0
September 17, 2026
He communicated very well and listens to my comments. He also explains the plan of action in detail.
5.0
September 16, 2026
He was extremely knowledgeable and personable.
5.0
September 14, 2026
Dr. Hall is always very comprehensive and my appointment is always informative
5.0
September 14, 2026
Dr Hall is always attentive and engaged during my appointments.
5.0
September 3, 2026
Excellent Dr.
5.0
September 1, 2026
Dr Hall is thorough and excellent at explaining the situation and options for treatment. He covered all aspects of the action items that need to do.
5.0
August 27, 2026
Dr. Hall is always so informative and so smart and helpful.
5.0
August 27, 2026
Dr. Hall was SO thorough, kind, and compassionate. He took a lot of time with me and searched relentlessly to find my history. He explained everything to me and made sure that I understood. He is AMAZING!
5.0
August 26, 2026
Follow up appointment. Dr Hall answered all my questions
5.0
August 24, 2026
Professional and thorough
5.0
August 21, 2026
Dr. Hall spent a full hour with me. He listened carefully. It was the most thorough and informative doctor visit I've ever had.
5.0
August 20, 2026
Dr. Hall is a favorite doctor. He listens well and has good feedback. I would recommend him to anyone.
5.0
August 20, 2026
Dr. Mark Hall is very thorough understanding and kind my rheumatoid arthritis has been well controlled
5.0
August 12, 2026
Dr. Hall spent time with me to discuss my concerns and ailments. He provided a clear plan of how to begin to diagnose and treat my issues. I appreciate his candor and concern.
5.0
August 10, 2026
Personable, explains things, remembers the details, pleasant.
5.0
August 10, 2026
Dr Hall is a wonderful Doctor, he’s very knowledgeable and so easy to talk to. I’m so glad he will be my rheumatologist
5.0
August 7, 2026
Wonderful, caring physician.
5.0
August 7, 2026
Dr Hall is very attentive and caring. Wonderful doctor!
4.0
August 7, 2026
Great
5.0
August 7, 2026
Dr Hall is great Very thorough, knowledgeable and personable
5.0
August 6, 2026
Dr Hall is very thoughtful, thorough and really makes you feel seen and heard. He also has an easy bedside manner that makes it possible to hear what he has to say. I felt well cared for.
5.0
August 6, 2026
Dr. Hall was very thorough and asked all the right questions so I can receive the most appropriate care for my condition. He requested testing and referred me to 2 other specialists to get to the bottom of my concerns.
5.0
August 6, 2026
A recheck on my progress under the current medication. Doctor was exactly right on time always courteous and extremely helpful
5.0
August 6, 2026
He's wonderful. I’m grateful to have such a brilliant, caring, cheerful doctor.
5.0
August 4, 2026
Knowledgeable, professional, courteous, caring
5.0
August 4, 2026
Dr Hall is amazing. I saw him 3-4 years ago yet he spent the time to clear an issue for my recent knee replacement. I followed up with him today on a variety of diverse, uncommon issues. He took the time with me to explain the complexities involved with each and the options I can pursue for each.
5.0
August 3, 2026
Dr. Hall is very thorough, excellent in explaining my conditions and medications, and understanding my concerns. He has been able to address and help improve my RA condition and medications, especially with respect to my other health issues.
5.0
July 26, 2026
Extremely thorough. Great at both listening to the weirdness that goes on with immune systems and communicating clearly.
5.0
July 24, 2026
Doctor Hall answered all my questions and gave me information from my tests that I need to know. Was very efficient about our appointment time together.
5.0
July 24, 2026
Waiting room was NOT crowded 👍Thank you. Dr. Hall is through, knowledg sharing, and caring.
5.0
July 24, 2026
Fantastic doctor. Very knowledgeable, deeply caring, and provided time for any questions we may have.
5.0
July 23, 2026
Best Dr. ever
5.0
July 23, 2026
Took his time, explained everything and was very relatable. I felt very reassured.
5.0
July 23, 2026
Dr Hall is great. He is willing to answer your questions. Very helpful and informative.
5.0
July 22, 2026
Very caring with good explanations
5.0
July 17, 2026
Absolutely terrific!
5.0
July 15, 2026
Myself and my life partner had an appointment with Dr. Hall for the first time today. As far as I’m concerned, we think he’s fantastic. Great communicator, great personality and he explains everything in layman terms so we understand clearly it was a joy to meet him. I can’t wait to have a problem again so we can go back and meet Dr. Hall all over again. 🤗
5.0
July 15, 2026
Very kind. Explains and teaches patient. Excellent.
5.0
July 10, 2026
Very professional and friendly with an excellent amount of verbalizing answers about my important medical needs very thorough in explaining medical necessities and referrals to the doctors who can help me
5.0
July 9, 2026
Very good
5.0
July 9, 2026
Professional & helpful
5.0
July 8, 2026
First time visiting this particular doctor. Very nice gentleman easy to talk to and explain explained everything quite well
5.0
July 6, 2026
Prompt and helpful
5.0
July 2, 2026
Provider always wonderful and so caring.
5.0
June 30, 2026
I feel very well cared for by Dr. Hall and truly appreciate his expertise as well as the kind and thoughtful way he takes the time to explain everything to me.
5.0
June 29, 2026
Dr Hall is truly incredible. He spent almost an hour on my new patient appt today, and every moment he was asking brilliant questions. His extreme intelligence, intense detailed questions, and his ability to take the medical history details and determine the precise next steps or referrals, is exceptional. And he has such a kind heart and warmth, all while maintaining total professionalism. I will be recommending him to everyone i know. He is fantastic.
5.0
June 25, 2026
Dr Hall is pleasant, very thorough, knowledgeable, prepared, patient and an excellent listener. He allows there to be more of a conversational discussion which allowed me to come up with concerns and questions at that time and have them addressed at the same time. He is very easy to talk to and makes you feel like you're in safe hands.
5.0
June 25, 2026
Excellent!!! He takes all the time to explain to you every single detail.
5.0
June 25, 2026
Love Dr . Mark Hall, he takes good care of me!
5.0
June 23, 2026
Excellent analytical skills; professional; integrated the balance of medications in concert with other treatments. Intelligent and a great caring approach to the patient. Fortunate to have Dr. Hall as my physician
5.0
June 23, 2026
Dr. Hall is very thorough and courteous. His explanations were very clear and he wasn't rushed.
5.0
June 19, 2026
Dr hall is the best listener concerning up to date on new medications and spen time with his patients
5.0
June 18, 2026
Dr. Hall was very thorough. You answered all my questions. He's very eligible and very professional.
5.0
June 18, 2026
Dr. Hall was very helpful and just a happy friendly provider. I would absolutely recommend him.
5.0
June 18, 2026
Friendly detailed evaluation. Took time to listen and make excellent recommendations for ongoing care. Very happy with Dr. Hall and his staff.
5.0
June 17, 2026
He's knowledgeable and explains things well
5.0
June 17, 2026
Dr. Hall was great. Very thorough and knowledgeable
5.0
June 12, 2026
Dr Hall has been so helpful. I am a new patient with him and the results from my visit and the proper prescription has changed my life
5.0
June 12, 2026
This doctor was very good. Friendly and knowledgeable and helped me understand what I should be looking out for.
5.0
June 10, 2026
Dr. Hall is one of the most thorough and sensitive Dr's I have ever met. He is also patient and kind and I feel so privileged To be working with him and my husband has made his own appointment b by
5.0
June 10, 2026
Friendly and warm and very knowledgeable. He's just great.
5.0
June 8, 2026
Always a good appointment with Dr. Hall
5.0
June 8, 2026
Dr. Hall is a very patient and caring person, he pays attention to many details of my condition. I feel comfortable with his professional insights.
5.0
June 5, 2026
Dr. Hall is the best!
5.0
June 3, 2026
Wonderfully kind and attentive doctor.
5.0
June 2, 2026
On time and very conscientious.
5.0
June 2, 2026
Hey always takes the time to answer all of my questions
5.0
May 28, 2026
Very professional and friendly
5.0
May 28, 2026
Dr. Hall is knowledgeable and caring, the best!
5.0
May 28, 2026
I feel Dr Hall is thorough and looks at my progress to determine next steps if needed. We talked about the next steps and weighed pros and cons of various meds.
5.0
May 28, 2026
Knowledgeable, friendly and caring I feel I am in good hands having Dr Hall as my doctor
5.0
May 27, 2026
Very good,
5.0
May 26, 2026
Caring and listens to your problems
5.0
May 22, 2026
Dr. Hall is always very comforting and thorough with all the tests he requests to provide patients with accurate answers to their medical conditions. He answers questions and details about treatment options and actually spends the time with his patients to make sure everything is understood.
5.0
May 19, 2026
Patient, through, answered questions
5.0
May 14, 2026
Dr. Hall, as always, has an exceptional bedside manner. He listens to your concerns and provides thorough treatment plan. He takes time understanding his patients and work and help you with your concerns.
5.0
May 11, 2026
It was a routine follow up appt. I appreciate that Dr. Hall takes as much time as needed to discuss my concerns
5.0
May 7, 2026
Very thorough appointment. Dr Hall provides professional explanations and is also personable. I greatly appreciate the time he spent with me.
5.0
May 5, 2026
Dr. Hall is always very professional and thorough during all my appointments.
5.0
May 5, 2026
Prompt, efficient and explains things well and is clear and easy to understand.
5.0
May 4, 2026
Spends the time to listen to you and ask a lot of questions. I never feel rushed.
5.0
May 4, 2026
Dr. Hall expresses genuine concern for my well-being and our visits always cover all concerns. He is very personable and professional.
5.0
May 1, 2026
Friendly, welcoming. Explains things clearly, allows as much time as needed to ensure all questions/concerns are answered. Provides options & recommendations while still allowing patient to make their own decision.
5.0
April 28, 2026
Always excellent
5.0
April 28, 2026
He is always clear and understandable as well as understanding showing knowledge and experience all while being personable.
5.0
April 26, 2026
Caring attitude, spent time, thorough. It’s nice to have a doctor that really listens and responds.
5.0
April 24, 2026
Dr Hall had very good advice, suggestions and explanations.
5.0
April 22, 2026
Dr. Hall is friendly and helpful. He explained everything very well.
5.0
April 22, 2026
Good listener, knowledgeable and caring
5.0
April 16, 2026
Very nice and informative.
5.0
April 16, 2026
Dr. Hall is knowledgeable and caring. He treats you like he would treat his family.
5.0
April 15, 2026
Dr Hall, is a very knowledgeable physician . I was extremely sick for many months and he gave me expert care during a year.
5.0
April 13, 2026
Dr. Mark Hall is very thorough and thoughtful. I greatly appreciate his insights and compassion.
5.0
April 7, 2026
Extremely detailed in explaining my situation with looking after my bones. Side effects of possible future medication. He has a charming personality and with genuine interest in my health and wellbeing without time pressure.
5.0
April 7, 2026
Dr Hall is the best. He listens, strategizes and acts on my treatment. I really appreciate him.
5.0
April 3, 2026
He’s engaging and listens.
5.0
April 2, 2026
Dr. Hal is just so personable and he’s funny!
5.0
April 1, 2026
Great experience everyone is very accommodating and Dr. is very kind and very helpful. As always all my concerns is always addressed before I leave. Highly recommended.
5.0
March 31, 2026
Dr. Hall took his time to address all of my concerns and answer my questions. I appreciated how he showed me why he was saying what he was. I never felt rushed and really appreciated his very kind demeanor
5.0
March 25, 2026
Dr. Hall is a great doctor who is professional and always answers all my concerns.
5.0
March 23, 2026
Dr. Hall was absolutely amazing! He was so thorough. Spent lots of time with me! I would highly recommend him to anyone!
5.0
March 23, 2026
Great
5.0
March 20, 2026
Overall, a great experience. Dr. Hall took over an hour to thoroughly go through my history, do a comprehensive evaluation, and develop a treatment plan that was the best approach for me.
5.0
March 16, 2026
Extraordinary doctor. Explains everything.
5.0
March 16, 2026
such a nice doctor, spent the time going over my condition
5.0
March 12, 2026
Excellent
5.0
March 11, 2026
Dr Hall is professional, caring, and makes you feel at ease! Great Dr wish I would highly recommend!
5.0
March 11, 2026
dr. Hall, is very knowledgeable and very informative. I enjoy visiting him. He does UCLA a great service..
5.0
March 11, 2026
Always excellent thorough care!
5.0
March 6, 2026
Thorough, concern, and knowledgeable
5.0
March 5, 2026
Dr Hall is engaged and devotes time to me during my office visit. Takes time to explain the various facets of my treatment.
5.0
March 4, 2026
Excellent bedside manner. Explains issues well. Asks good questions. Takes time to respond to all concerns.
5.0
March 2, 2026
He listened to my concerns and addressed my questions
5.0
March 2, 2026
Efficient, professional, friendly
5.0
February 26, 2026
Great doctor,
5.0
February 26, 2026
Dr Hall is a great doctor. Very informative, explains everything in detail and listens to everything you have to say I’m so glad I have him.
5.0
February 25, 2026
Very caring and knowledgeable doctor. I feel my health is good hands.
5.0
February 24, 2026
Incredibly thorough and informative
5.0
February 23, 2026
Dr. Hall, is a physician who is very professional as well as knowledgeable. He can also be very personable! I am happy that he is my doctor!
5.0
February 23, 2026
Dr Hall is an exceptional physician who truly cares about his patients. From the moment I walked into the office ( thru video visit) I felt heard, and respected. He took the time to listen carefully to my concerns, explained everything clearly, and answered all my questions thoroughly without rushing.
5.0
February 20, 2026
Very helpful, informative and patient. Always feel very comfortable when asking Dr. Hall questions.
5.0
February 19, 2026
He took the time to listen to me and made a plan I was comfortable witj
5.0
February 19, 2026
Dr. Hall is very thorough and made sure to take notes of all my aches and pains. I feel he truly cares for his patients. I don’t feel rushed and he has great bedside manners.
5.0
February 19, 2026
Always brilliant, compassionate, respectful, spends a lot of time explaining and answering questions.
5.0
February 17, 2026
Dr. Hall is one of the kindest and most patient doctors I’ve ever seen. He raises the bar for all doctors!
5.0
February 12, 2026
Very knowledgeable and kind.
5.0
February 11, 2026
Dr Hall squeezed me in with one day notice so he could see me. He is wonderful. Knowledgeable and funny too. Thank you. Don’t let him get away.
5.0
February 8, 2026
Thorough, concerned , very ptofessional
5.0
January 29, 2026
Dr. Hall generally runs on time. Her is personable, thorough in explanations and answering my questions.
5.0
January 29, 2026
Friendly, knowledgeable an excellent specialist.
5.0
January 28, 2026
He is very easy to understand and talk to. He seems like a genuine person which I like in a Doctor. He is also knowledgeable and I like his way of thinking.
5.0
January 28, 2026
Follow up appt. Dr Hall is excellent. He has helped me immensely.
5.0
January 22, 2026
I feel safe under his care. I have resolved issues that took years to diagnose within the 6 months I saw him. He is thorough and detailed
5.0
January 21, 2026
Dr Hall Is matter of fact, Gives good explanations on things. Very positive and had done on outstanding job with my disease. Thank you , Dr Hall.
5.0
January 20, 2026
He’s very attentive to you as an individual
5.0
January 15, 2026
Dr. Hall is easy to talk to, and I appreciate that he is very comprehensive in his approach, referring to other specialties or primary care, as appropriate.
5.0
January 12, 2026
Very thorough and kind doctors.
5.0
January 12, 2026
A very good doctor who reviewed my medical history, listened to my concerns, discussed the possible causes and provided me with lab and imaging examination along with recommendations and a referral.
5.0
January 8, 2026
Dr. Hall is wonderful. He is never in a hurry to answer my questions, He has helped my medical problem to get better😊
5.0
January 6, 2026
Covered everything
5.0
January 5, 2026
He’s very professional and explains the medical concerns and goals to improve on my health and awareness of managing my life style to improve my life and health for quality of life.
5.0
January 5, 2026
I feel very lucky to meet Dr Hall . He is a very professional, highly knowledgeable in his field. He is very caring. He listened to my problems patiently and is helping me with my problem. He has done a great job finding the root of my pain and problem and he is guiding me to the right direction. I absolutely appreciate him. I wish all the doctors care for their patients as much as DR Hall does. All the staff at this UCLA facility are helpful.
5.0
January 2, 2026
Dr Hall is very thorough and clear when discussing my issues. He uses good analogies as an explanation
5.0
December 30, 2025
I am a physician and thought Dr. Hall was kind, wicked smart, thorough, up to date, personable, and seemed to really care about my specific disease process. I would highly recommend patients see him for rheumatology! After the visit, I sent my colleagues his name and number so they could refer as well!
5.0
December 29, 2025
Dr. Hall, is a very patient and attentive physician. He explains just exactly what the problem is at hand and how he/patient can resolve it. Good strategy!
5.0
December 23, 2025
Pleasay experience Great doctor highly recommended
5.0
December 22, 2025
Dr was on time and spent time with me and I love him!
5.0
December 18, 2025
Dr. Hall was very thoughtful, thorough, and well informed. I was very pleased with his examination and insights. I plan to strongly recommend him to friends and family.
5.0
December 17, 2025
He is very patient and thorough! He really listens too.
5.0
December 15, 2025
It has been a very long time since I’ve experienced such wonderful care from a Dr. Dr. Hall was just above and beyond in his care giving!!
5.0
December 15, 2025
Dr. Hall very patient and professional! He is the best !
5.0
December 15, 2025
Dr. Hall is always great never a problem
5.0
December 10, 2025
Dr. Hall explains everything so well. He is the very best and kind and so funny!
5.0
December 7, 2025
Dr Hall acknowledges my concerns and gives feedback about my overall situation, not just in regards to his specialty. I feel he cares about me and is the best rheumatologist I've had in over 30+ years.
5.0
December 4, 2025
Friendly and takes his time explaining things.
5.0
December 3, 2025
Dr Hall is knowledgeable, very nice and pleasant. His assistant is also friendly and helpful.
5.0
December 2, 2025
Dr Hall is knowledgeable, friendly and patient discussing a possible plans of action for my care.
5.0
December 2, 2025
Efficient, friendly, super knowledgeable, good experience
5.0
November 27, 2025
Dr. Hall is a truly compassionate professional. I feel more very fortunate to have him in my life.
5.0
November 25, 2025
Great doctor who spends time learning and understanding m6 situation
5.0
November 22, 2025
Dr. Hall is very knowledgeable, conscientious, and kind. The staff is also respectful & kind. This was an excellent medical visit.
5.0
November 21, 2025
Dr. Hall is very careful to explain everything and to answer all your questions. Does not rush you at all.
5.0
November 21, 2025
Very informative
5.0
November 20, 2025
Very pleasant and informative visit. All questions answered.
5.0
November 20, 2025
Very caring and helpful
5.0
November 19, 2025
Very good
5.0
November 17, 2025
Dr. Hall is knowledgeable, thurough, and kind. He has an upbeat personality and he is very caring.
5.0
November 17, 2025
Dr Hall and his staff are knowledgeable, friendly, and professional. I always feel comfortable and confident with them.
5.0
November 13, 2025
Dr Hall is an excellent doctor. He spent the time listening to my issues and gave me a lot op constructive suggestions. He is very compassionate and understood the pain I was going through. He explained everything to me and had a very positive and cheery personality.
5.0
November 12, 2025
Dr. Mark Hall is my favorite Doctor and the best he is very detailed and concerned with patient care and wants to make sure my treatment is improving my overall health and lifestyle.
5.0
November 10, 2025
Dr Hall was thorough, kind, informative, and knowledgeable.He explained my situation and gave me a clear plan for further evaluation.
5.0
November 10, 2025
Dr Hall is very kind and gentle.
5.0
November 10, 2025
Dr. Hall is a good listener and I never feel rushed when I see him
5.0
November 8, 2025
He was very knowledgeable, an excellent listener… he worked hard to solve my problems so that I could move forward. He guided me to be able to make best medication decisions. His referrals and vast information regarding what I specifically must do to improve my bond health wS the best advising I’ve found at UCLA.
5.0
November 7, 2025
Dr Hall is always thorough, personable and professional. He takes all the time necessary.
5.0
November 6, 2025
Dr. Hall is just the best. Smart, thorough, personable, etc. I feel like he takes the time to put “all of the pieces together,” demonstrating patience and expertise.
5.0
November 6, 2025
He was very comprehensive did not rush me and seems genuinely interested in finding the condition from