John Lah - PIH Health - Whittier, CA

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John J. Lah

John J. Lah, MD

4.8 / 5 (based on 348 Reviews) View 92 Comments

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12291 Washington Blvd #201
Whittier, California 90606
  • Main: 562.698.0306
  • Fax: 562.789.5458

Hospital/Group Affiliation

PIH Health Physicians

PIH Health Hospital - Whittier





  • Gastroenterology


  • English



University of California Medical Center (Irvine)


University of California Medical Center (Irvine)


New York Medical College - Valhalla


Gastroenterology (Sub-Spec Cert)

Internal Medicine (General Cert)


Patient Reviews

July 03, 2018
They are the best...I never have any fear when I've needed a procedure done and the staff have all been wonderful.
June 29, 2018
Nice,friendly,and explained with detail.
June 29, 2018
Hang in there with me.
June 29, 2018
Dr. Lah has been my husband's Dr. for a few years and now I visited him as the patient. He is always thoughtful and takes time to explain any concerns and answer all questons. One of the best of the best.
June 29, 2018
very nice
June 27, 2018
June 25, 2018
I would to see more flexibility in the appointment area like weekends.
June 22, 2018
Dr Lah is a fantastic doctor.
June 19, 2018
I like going to PIH and Dr Lah. He and his staff in the procedure room were quite knowledgable and good communicators. I have no hesitation in recommending this team or PIH in general based on my overall experiences.
June 18, 2018
Dr. Lah is very attentive. He had already studied my case before the procedure even began and explained exactly what he would be looking for and the expected results. He is also a very kind man which makes a big difference in a stressful situation.
June 18, 2018
Have this done ASAP, don’t hesitate. They made me feel at ease.
June 18, 2018
Services were and are the best I have ever had
June 13, 2018
Dr. Lah is friendly, listens and answers questions without making you feel rushed. Very knowledgeable in his field. I feel very confident that I am getting the best care from this doctor and am extremely satisfied.
June 05, 2018
No discomfort
June 04, 2018
Dr. Lah and staff we very helpful with providing procedures taken and with information provided before and after.
June 04, 2018
The care I received was excellent. All of the nurses were wonderful and caring. They all did such a great job! Thank you!
June 01, 2018
This is an encouraging and very supportive doctor.
May 25, 2018
From the time I walked in to the office to the time I left everyone was very kind, pleasant & attentive! My Dr. was very informative, respectful and definitely made me feel cared for by himself & his staff!
May 23, 2018
He is trying to find the best solution for my problem
May 22, 2018
I would recommend them as a health care provider.
April 17, 2018
For a rather unpleasant necessity, this provider made the experience bearable. Thank you!
April 16, 2018
Nurses and Medical staff were great too.
April 16, 2018
All was good!
April 13, 2018
Dr Lah was very knowledgeable and respectful. He explained in detail the digestive track and it was nice to know he confirmed my belief on the connection between brain and gut health. He was quick to put me on pills to neutralize my acidity, which I am struggling to do since I don't like taking medication and rather try other alternatives before turning to pills, but I am following dr's orders. Also, he never told me what my diagnosis was except for that I was too acidic and that is what was causing my bloat, gas pain, and discomfort. I had read other comments that he didn't really take time to listen to what the patient had to say, I didn't feel that way, however he did talk about 90% of the time and would ask if I had questions after explaining something. I did get caught up in what he was explaining, that I forgot to mention the rest of the symptoms I was experiencing, and to ask him several important questions I had.
April 10, 2018
That the staff, made me feel very comfortable.
April 10, 2018
I recommend him because he listens well and explains things well
April 06, 2018
I would recommend him.
April 04, 2018
Dr. Lah has been the only MD that has sat down and spent time to get my full symptom history, explain a plan of care and is the first to take action to find the cause. Thank you Dr. Lah!!
April 02, 2018
Professional and courteous doctor.
March 30, 2018
I feel safe with what Dr Lah explained to me on what he was going to do. Dr.Lah also explain why I should have other test done and I told my sister's about it.
March 28, 2018
very nice and easy to speak to about health problems.answers to the point and informative.
March 26, 2018
Great Service was provided!!
March 20, 2018
very good.
March 20, 2018
Dr. Lah was wonderful. He was incredibly thorough. Answered all my questions and spent an amazing amount of time with me. He genuinely cared about my well being. A true caring and compassionate professional. The office staff were also very sweet and friendly. An overall great experience with Dr. Lah and staff.
March 15, 2018
Be conscience of your health issues and seek medical help as soon as possible.
March 14, 2018
The best Dr.I've been too.
March 07, 2018
Thank you for your service and response to my questions
March 06, 2018
I did not get much time to talk to him. I was sedated before the procedure and then woke up in the recovery. The nurses were all good. They could have explained that I should stay home from work due to sensitivity
February 26, 2018
That I was very pleased with everything and grateful for a positive outcome.
February 26, 2018
Excellent nursing staff.....very reassuring and pleasant.Thank you
February 26, 2018
Staff very professional and my procedure was handled quickly and efficiently Thank you
February 22, 2018
Dr. Lah is very thourough. Appreciated how extensive he was in his explanation. I felt very comfortable asking him questions and sharing my concerns.
February 20, 2018
Very professional and knowledgeable any question I asked he took the time to answer for me
February 16, 2018
Dr. Lah was knowledgeable and considerate. I highly recommend him.
February 09, 2018
Very good understanding doctor that knows his expertise.
February 05, 2018
Very professional and personal at the same time.
January 31, 2018
January 31, 2018
The provider was very helpful
January 30, 2018
The only difficulty I had was keeping the original appointment. The office called me twice to change it
January 29, 2018
All the people that helped me were great and very professional and nice.
January 29, 2018
Please provide the information of this sort on the PIH patient portal.
January 26, 2018
Dr Lah clearly explains the issue and the solution. He sent my RX over right away so I didn’t have to carry a prescription to the pharmacy and wait a long time.
January 23, 2018
Every one was great.
January 17, 2018
Very good listener who provided my mom great information. She appreciated his advice.
January 12, 2018
I'd say that Dr. Lah is very knowledgeable but I felt the appointment was in a rush. When I asked questions he was looking at the computer which it feels weird and disrespectful. He asked me if I had done some tests that he could had seen easily before meeting with me. In my opinion he needs to study the patient's case, paying attention when talking to the patient, and being more caring.
January 11, 2018
Thought it was a good doctor.
December 29, 2017
He is a very professional and helpful, kind and caring, answers every question to the best of his medical knowledge. He shows that he cares about your health
December 20, 2017
Good Doctor.
December 19, 2017
Everything went smoothly and I had no pain or discomfort after the procedure!! I hope he's my doctor the next time I have this procedure.
November 29, 2017
November 29, 2017
My spouse sees this MD. I've recommended Dr. to co-workers, family and friends. Answers all questions in a way that makes it very easy to understand. Goes above and beyond with his explanations.
November 27, 2017
Very professional and friendly
November 16, 2017
Dr. Lah and staff are friendly and efficient! The surroundings is pleasant!
November 15, 2017
Again, I'm extremely happy my care is in the hands of such a knowledgeable physician. In addition to not experiencing the swallowing issues I had before, I am no longer stressed about my condition knowing that everything is under control because of the treatment plan prescribed by Dr. Lah. I cannot express in words how grateful I am for that. Dr. Lah's staff is also very professional in welcoming me and taking care of the administrative requirements.
November 15, 2017
Everything was just as I needed to feel much better
November 13, 2017
Everyone one was very kind and caring. Couldn't ask for better service.
November 10, 2017
Great service from the entire team. Was called in at time of appointment
October 18, 2017
Dr. Lah is knowledgeable and takes time to explain all issues and address all concerns. Office staff is personable and helpful.
October 12, 2017
If you’re not sure what a colonoscopy entails, just ask Dr. Lah and he will explain it thoroughly.
October 06, 2017
Dr. J. Lah is very knowledable, patient, thorough, compassionate, attentive, polite & a true Professional. I feel very lucky to have been recommended to see him. He understood my medical problem completely and explained the process I need to undergo to get myself where I need to be. He is "Amazing" and I felt very much at ease with him. He made it easy to express my concerns and addressed them to my complete satisfaction. Also, there is no long waiting time to be seen. Staff seems to set up appointments to give the patient enough time to address everything that is our concern. My appointment was at 2:30pm and I went in at 2:30pm. Great Staff and the Best Doctor. I highly recommend Dr. J. Lah, Gastroenterology.
October 03, 2017
Excellent experience
September 26, 2017
The Dr. provided excellent service & the staff members provided me outstanding help & service as well !! I would recommend this group to family & friends.
September 18, 2017
None good job
September 13, 2017
I wish all MD's were this easy to talk with. Dr. Lah is a no nonsense guy. He is direct and easy to understand.
September 12, 2017
He was also very helpful in explaining the procedure I was getting done
September 12, 2017
Very confident young man, Dr Lah. He explained exactly what the procedure was going to accomplish, and asked me if I had any questions at all. A great feeling all the way round!
September 12, 2017
Very easy to get an appointment and get my colonoscopy scheduled!
September 11, 2017
If a person needs a check-up or some process they shouldn't hesitate to do it with you. Thanks.
September 08, 2017
Dr. Lah was thoughtful caring and respectful during my visit. I have complete confidence in his knowledge and experience. I am in good hands and continue to receive the best of care.
September 08, 2017
Highly recommend doctor and medical center.
September 07, 2017
He is knowledgeable and caring
September 06, 2017
September 06, 2017
I was extremely grateful to Dr. Lah for seeing me because I had an appointment with the PA but she was ill and he fit me in. I really liked him and had confidence in his recommendations and appreciated his kindness and expertise. He is an excellent doctor in an excellent staff.
September 01, 2017
Dr Lah and staff are the best you feel welcome as soon as you enter the waiting room. Friendly atmosphere and very clean. Dr Lah treats you with respect, explains everything making sure you understand and then asks if you have any questions. He is a terrific listener and a very bright Dr with a great bedside manner. You guessed, I'm a happy patient. I recommend him to family and friends.
August 29, 2017
He seemed knowledgable, although I spoke briefly to him just seconds before I was put under anesthesia. Although the Dr. spoke extremely quick, I did have a chance to absorb and comprehend his information. The last words I heard were "Have a good nap!"Never saw him afterwards, but my report was relayed via very knowledgable and personable nursing staff.
August 29, 2017
Dr. Lah provides me with the attention I need and listens carefully to what I have to say.
August 17, 2017
Took care of my needs in a professional and caring manner.
August 08, 2017
he was attentive, listened to me, offered suggestions and all around seems like a caring dr.
August 02, 2017
Dr. Lah speaks in a very positive manner. Much appreciated.
July 31, 2017
Dr. Lah and his team were amazing! I got excellent care at the PIH facility while getting a procedure done.
July 31, 2017
Dr. Lah and his staff, are are all extremely professional, thorough, and attentive.
July 25, 2017
Everyone was very professional and friendly