John Lah - PIH Health - Whittier, CA

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John J. Lah

John J. Lah, MD

4.9 / 5 (based on 369 Reviews) View 102 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







  • 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

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
July 10, 2017
Polite, informative, patients treated with respect.
July 07, 2017
Dr. Lau impressed me for several reasons. He was good with eye contact, listening, answering, and -- really impressive -- knowing my history from having read the file before coming into the exam room. No wonder Dr. Darwish recommended him!
July 06, 2017
That he is a really great doctor. Takes his time with patients and is very informative and thorough
July 06, 2017
Very kind and articulate.
July 06, 2017
How concerned he seemed to be.
June 30, 2017
Nice doctor, good memory, and sense of humor.
June 28, 2017
Dr. Lah takes time with you, listens, and also communicates well.
June 27, 2017
Great experience!
June 26, 2017
The staff , Nurses, Dr we're all very nice and made me very comfortable I Would highly recommend them.
June 26, 2017
I am very pleased and look with confidence to the future whatever else I may need I will be well taken care of.
June 20, 2017
I wish this provider would have taken the time and patience to listen to my symptoms and focus a bit more on what I've experienced symptom-wise in order to better understand my concerns and frustrations. I felt like he felt he already knew my situation and gave me general guidelines to follow before our follow-up. I would have felt better if it was more of a question-answer-explanation conversation instead.
June 19, 2017
I am pleased with the professionalism of Dr. Lah.I brought to his attention of how I was feeling and he did nothesitate to schedule the procedure right away.
June 14, 2017
Very nice, professional and staff was very friendly.
June 14, 2017
Dr. Was very informative and seemed genuinely concerned about my health.
June 12, 2017
Dr Lah is great doctor. Caring and answered all my questions and very professional. I would highly recommend him.
June 05, 2017
Recommend highly
June 01, 2017
Not only was the doctor helpful but a staff member was too. The young lady explained and answered info that I needed for an exam very carefully.
May 31, 2017
Dr Lah is very easy to understand and professional. He explained everything to me and answered whatever questions I had.
May 19, 2017
He was excellent! Very helpful and informative.
May 17, 2017
I would recommend him to them.
May 17, 2017
Friendly, knowledgeable, thorough
May 10, 2017
The staff and professional team here at this office are exceptionally helpful and always provide excellent customer service. I am always very happy to receive such superlative care.
May 10, 2017
He is very polite , professional, and he knows what he is doing He always listen and give the wright advice
May 08, 2017
Excellent doctor and staff. Great care from entering the office until discharge. All questions were answered quickly and completely.
May 08, 2017
I have been telling them what a great experience I had with this Doctor and his nurse's
May 08, 2017
Before I knew it , procedure was over . No ill effects.
May 01, 2017
April 19, 2017
I love PIH, I have always been given good service. Well almost always??
April 18, 2017
Very professional, very clean and up to date facilities. The nurses and techs were very nice, they smiled and genuinely seemed to care about my comfort and well being. I think most people expect this kind of care and professionalizim. It's my opinion that I've chosen one of the top providers of healthcare for my family and myself. Obviously this is a team effort between PIH and the medical professionals who work there. Fantastic job, keep treating people like human beings.
April 18, 2017
I felt very comfortable with Dr.Lah, he was very compassionate & made me feel comfortable.
April 17, 2017
I really liked Dr. Lah felt very comfortable with him and he was kind and he listened and treated me right away!
April 14, 2017
With doctors like John Lah we are getting exceptional medical care.
April 14, 2017
Dr. Lah is informative and cautious. He explains clearly how meds interact with each other and makes careful adjustments so that patient understands.
April 13, 2017
Dr. Lah is my husband's Dr. too and he's happy w/his service.
April 13, 2017
I felt very comfortable with him.
April 07, 2017
Dr. Lah is the best and the nursing staff is amazing.!!
April 07, 2017
I can only speak about my appt with Dr Lah. He made me feel comfortable and made me feel important.
April 07, 2017
In magnifico GI con el cual me atiendo por muchos años y que ha mejorado mucho mi salud
April 05, 2017
As I wrote previous I was pleased with Dr. Lah
April 04, 2017
He was wonderful.
March 29, 2017
He's an excellent doctor. I felt very comfortable with him and eased for my procedure. The office staff was also amazing, they even took me early.
March 28, 2017
My regular doctor highly recommended Dr. Lah and his team (in fact, he'd had a colonoscopy with them himself). I add my own recommendation to his unhesitatingly.
March 27, 2017
Great Doctor and professional and empathetic staff.
March 27, 2017
very nice bedside manners. very respectful
March 27, 2017
Dr. Chiao Yen is very professional, friendly and efficient at every encounter and I definitely would recommend her to anyone! :)
March 27, 2017
I have the utmost confidence in Dr Lah to take care of my needs.
March 27, 2017
I was treated in a professional and caring manner and felt very confident that I would be well taken care of.
March 20, 2017