John Lah - PIH Health - Whittier, CA

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John J. Lah

John J. Lah, MD

4.8 / 5 (based on 410 Reviews) View 115 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

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
March 10, 2017
It was an awesome experience! The team was fun, and professional! Again, thank you Dr. Lah and team ??
March 08, 2017
Doctor was very reassuring. I left feeling as if I am in good hands.
March 07, 2017
Yes I would
February 24, 2017
you guys are the greatest!!!
February 23, 2017
He is informative and concerned about your health.
February 21, 2017
I did not give the provider a 10 because, due to the nature of procedure, I only met the doctor just before I was anesthetized. I really can only evaluate him adequately once I have met with him for our follow-up visit.
February 14, 2017
Felt very well taken care of.
February 14, 2017
This is the verry best hospital I ever been with !!I definetly will recomemed to all my family member and friends
February 13, 2017
Very Outstanding !!!
February 13, 2017
Great Provider the entire staff was awesome very professional
February 06, 2017
I appreciate his care about my health and also his recommendations moving forward, to improve my well being.
February 06, 2017
The PIH staff did everything they could to make me comfortable.
January 30, 2017
Dr. Lah is a great doctor, he knows is stuff.
January 30, 2017
Great facility very kind people
January 09, 2017
Everyone was very friendly and helpful.
January 09, 2017
No concerns whatsoever. Am pleased and very satisfied.
January 04, 2017
Dr. Lah has always been friendly and courteous. Very professional but not unapproachable. I was very scared with my medical condition when I was first introduced to him but he has always made me feel at ease and I feel I can ask him questions and he takes the time to think and answer them. I have already recommended him as a doctor to my friends and would do so anytime.
December 20, 2016
Yes. They need to have the male reception take anger training courses
December 19, 2016
La atencion del dr y de su equipo demasiado amables para sentirse tranquilo con todas su atenciones y cuidados muy profesionalGracias a todo el equipo
December 19, 2016
Thank you for a positive experience
December 15, 2016
Dr. Lau is very professional, knowledgeable, and demonstrated expertise in his field with current research info. Listens well, and I did not feel rushed through the follow-up appointment.
December 13, 2016
Great service
December 12, 2016
December 06, 2016
Everyone I dealt with was courteous and knowledgeable
December 06, 2016
Excellent Doctor. Explained everything, I felt like he genuinely cares about his patients and wants to help them get better.
December 05, 2016
It made an unpleasant but necessary procedure as good as possible.
November 29, 2016
The staff at Digestive Health Services on Washington is very nice and comforting, they do anything they can to make you feel relaxed and calm. They're very informative and they make sure you understand anything you need to know. They also make sure all your questions have been exhausted.
November 29, 2016
I've recommended Dr. Lah to a few people. He listens carefully and seems genuinely concerned about patient care. Dr. Lah, please don't ever lose that quality.
November 28, 2016
Great doctor. Excellent experience with this procedure.
November 15, 2016
Dr is very good. You can always go to him
November 15, 2016
Excellent doctor.
November 14, 2016
Go to Dr. Lah with confidence.
November 14, 2016
Tentative and sensitive to patient needs
November 14, 2016
great doctor, takes time to explain things and answer any questions you may have.
November 11, 2016
Excellent experience! They worked me in quickly and Dr. Lah is very caring and competent.
November 08, 2016
I was quite nervous about going through this procedure but Nurse Susan and Nurse Pat were very kind, caring, personable and calming which made my experience a good one.
November 07, 2016
Great service.
November 03, 2016
Dr Lah is great! He is caring and compassionate. Dr Lah took his time, listened to my concerns and answered all my questions.
October 27, 2016
Very easy to discuss concerns with. Great listener and very informative. He always makes sure I understand before leaving the room. Cheerful and kind.
October 24, 2016
everyone was nice, friendly and professional...I was very nervous at first...after talking and being attended to by everyone I felt at ease and relaxed.thanks to everyone who attended me.
October 11, 2016
I like that everyone in the office is friendly and helpful, things are explained in detail to make sure you understand what is happening with your procedure.
October 10, 2016
They ask you to be there by a certain time And if you are they take you right away and there's not a lot of waiting.
October 04, 2016
Very profession and convenient
September 29, 2016
Dr. John Lah is a young, friendly and excellent gastroenterologist!
September 26, 2016
The thing that impressed me most was the professionalism and caring attitude of the staff.The following people and their attitudes were outstanding.Grace Cheng (RN), Sergio DeLavira, Op. Rm. Tech, Susie Gutierrez, Debbie Lugibihl.
September 26, 2016
From the receptionist to the the gentleman that rolled me out to my car, the entire staff was warm kind professional and friendly. Even the nurse who initially called me with details for my pre procedure prep was so accommodating. She answered every question with such patience. This is not a procedure I looked forward too or would look forward to again but I could not imagine going anywhere else. Keep up the great work.
September 26, 2016
The Out Patient GI staff do a great job of taking care of the needs of their patients.