John Lah - PIH Health - Whittier, CA

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John J. Lah

John J. Lah, MD

4.8 / 5 (based on 460 Reviews) View 97 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








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

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.
September 20, 2016
Caring, professional, knowledgeable, compassionate, attentive!
September 20, 2016
He a great doctor
September 19, 2016
Dr Lah is a professional and I truly appreciate the medical care he provides
September 19, 2016
I would recommend Dr. Lah for his expertise and quality of care!
August 31, 2016
Very pleasant and attentive to your medical issues!
August 24, 2016
He a great doctor I've went to another doctor and I didn't know what was going on with myself. Doctor Lah is amazing I understand everything he says that I have to do. ????
August 22, 2016
Had a great experience service was excellent
August 19, 2016
Dr. Lau is extremely knowledgeable and professional.
August 18, 2016
He listens, he knows my history, and he's easy to talk to
August 17, 2016
He was highly recommended by P.A. ANGEL DELGADILLO. I was not disappointed.
August 15, 2016
overall, the procedure was well done without incident.
August 10, 2016
I felt comfortable and that my best interest was considered.
August 09, 2016
Very professional and knoweledeable provider. I was extremely pleased.
August 08, 2016
Nurses are great and the staff is very helpful. Clean, professional, and well organized.
August 04, 2016
Dr. Lau is fabulous!
August 01, 2016
Would recommend this provider to friends and family
July 28, 2016
Great doctor
July 25, 2016
The staff was wonderful and caring. I have already recommended this center to my family and friends. Thank you to all the wonderful nurses, techs, front office staff, and to Dr. Lah for making a procedure known to evoke fear and avoidance, tolerable and less nerve-wracking!
July 18, 2016
That you will be thoroughly taken care of.
July 18, 2016
Great dr. Explained the procedure thirougly and let me know what to expect depending on the findings.
June 27, 2016
Just get it done. They make every thing easy. Very professional and efficient.
June 16, 2016
He's a very great doctor and knows what he does.
June 13, 2016
Doctor Lah is an excellent Doctor.
June 07, 2016
Dr. Lah has great bedside manners and he and his staff are very pleasant.
June 07, 2016
Efficient and thorough. Nice bedside manner too.
June 06, 2016
Ummm...I am trying to think of something wonderful to say about a Colonoscopy...Really?!! LoL
June 01, 2016
a professional
May 26, 2016
It was a good visit and I felt he opened up new areas of thought and consideration for an age old problem.