John Lah MD - PIH Health

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John J. Lah

John J. Lah, MD

4.8 / 5 (based on 318 Reviews) View 86 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 Whittier Hospital

PIH Health Physicians





  • 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

November 18, 2020
One feels confident and in good hands.
November 18, 2020
Very nice person
November 16, 2020
Positive feedback
November 11, 2020
He was very knowledgeable about me and my history.
November 09, 2020
I've had multiple procedures at PIH and this is the best facility in all aspects in the area. I feel 100% comfortable here.
November 09, 2020
I've been telling my family and friends that PIH is a great Hospital and that I had great service there
November 03, 2020
friendly and professional
November 02, 2020
The Digestive Health department, for all those whom I came into contact with, were professional and courteous. I knew what to expect and everyone fulfilled all of those expectations. The facility is well maintained and clean - again, just what I would have expected.
October 26, 2020
Bed side manners second to none awesome staff !!!!!
October 21, 2020
He is a great doctor
October 19, 2020
Go somewhere else besides PIH if you want quality service.
October 16, 2020
PIH Health has been great... I would recommend them greatly.
October 16, 2020
Dr lah listens to you and answers your questions. I would recommend him but be prepared to wait to see him.
October 15, 2020
The nurse and Dr. Lah both were very kind and listened and explained things. The front office has very little patience especially when you call on the phone to make an appointment or have a question.
October 07, 2020
I too have seen this provider so I was pleased that my husband was able to see him. He is patient, listens and then recommends a plan of action.
October 07, 2020
I feel confident in the expertise of this provider and trust the answers I get to my questions. They can usually put my mind at ease and provide pertinent information.
October 05, 2020
Dr. Lah has a perfect balance of caring and expertise. His calm and professional demeanor helped me tremendously during my diagnosis.
October 02, 2020
I value that dr knew my history before coming into my room. He showed knowledge, respect & care.
September 30, 2020
Good doctor doesn't rush through visit explains everything.
September 29, 2020
Great staff very easy to talk to & answered all of our questions.
September 28, 2020
The procedure, colonoscopy, was easy and the medical staff took the time to help relieve some of the apprehension that a patient may have. I felt that everyone was kind and very considerate.
September 23, 2020
this provider did all ok
September 21, 2020
Don't hesitate when it comes time for a colonoscopy. Early screening is key to a healthier outcome.
September 16, 2020
He reads your medical history and is well informed on the patients medical history
September 14, 2020
Overall process and experience was handled professionally and informative.
September 14, 2020
Nurses were outstanding. Experience was a breeze. Thanks Dr Lah
September 09, 2020
I would recommend Dr. Lah
August 26, 2020
Very good
August 24, 2020
How comfortable the nurses make you feel when their preparation in progress, they have a way of making you comfortable
August 04, 2020
August 03, 2020
I told my friend about it Feels better about procedure
August 03, 2020
He is a very good doctor
July 24, 2020
Dr. Lah and his staff were very friendly, courteous and efficient. Dr. Lah listened to my concerns and explained the procedure fully. I could not have been treated with any more respect and kindness.
July 22, 2020
Dr. Lah is great!
July 21, 2020
I was very confident for my procedure.
July 17, 2020
Every thing went great thank you for the phone call
July 15, 2020
He is a very good doctor that listens and explains everything clearly
July 15, 2020
Doctor Lah is ver nice and explains everything in details.
July 13, 2020
He's provides excellent patient care.
July 10, 2020
This Dr. Is Awesome
July 06, 2020
Friendly, caring... everyone on Dr. Lah's staff was attentive and caring. Dr. Lah and his staff made certain I was comfortable (had a hip injury), and they all explained the procedure clearly, and what I needed to do every step of the way, from pre-op through discharge.
July 06, 2020
Go to and use PIH
June 19, 2020
He is a good doctor
June 15, 2020
PIH hospital staff (all) and extremely professional and caring. From checking in to leaving the facility I was treated with the utmost care. I applaud each and everyone who I interacted with for great care and positive attitudes toward me. Thank you all.
June 12, 2020
Dr. Lah is patient and listens to your concerns and takes time to clarify what your concerns are to make sure he understands. He also thoroughly explains your condition and makes sure he answers all your questions.
June 12, 2020
Great facility and Doctor Lah saved my life. Thank you!!
June 12, 2020
He is a good gastro doctor and knowledgeable in his area of expertise. Treats people with respect .
June 08, 2020
In one word. . . Awesome ??
June 08, 2020
Dr. Lah and all his team worked very well to provide a visit that was fast, orderly & professional.
June 02, 2020
Excellent service!
June 01, 2020
The procedure went very easy and quickly. All the nurses were great. The Dr. did a great job. No pain at all. I never felt uncomfortable.
May 22, 2020
Was happy that he did not seemed rush to get out of the room .. spent time answering all my questions
May 18, 2020
Use him
May 18, 2020
A great team at PIH surgery center. I am very happy with my experience.
May 15, 2020
He was very caring and understanding he took the time to listen to me
May 15, 2020
The facility is clean and feels safe. The receptionist, nurse and doctor were kind and friendly.
April 29, 2020
This doc was as professional as can be
April 08, 2020
When you have diarrhea that won't stop you don't want to wait weeks to get an appointment to stop this mess. Got to see his assistant and what she subscribed didn't help.
April 03, 2020
Very knowledgeable in his field. Gives options as to how the patient might improve his/her digestive issues. Good bedside manner.
April 01, 2020
Dr. Lah explains well and has a positive feeling on my concern and also gave me good options.
February 24, 2020
Doctor and team were great
February 19, 2020
Make an appointment and you will be seen in a very good timely manner. Dr. Lah is an excellent surgeon and his diagnosis is always right on. If you want a "bandaid" for your medical issue, go elsewhere. If you want a 'cure or treatment', please go to PIH and see Dr. Lah, Gastroenterologist. Thank you!!!!
February 19, 2020
What PIH can improve is the telephone system. It takes too long to talk to a real person!
February 18, 2020
Dr. Lah was professional, respectful and compassionate. I certainly appreciated his professionalism while personalizing my healthcare plan.
February 07, 2020
It was ok
February 04, 2020
January 22, 2020
Definitly concern about his patient and very knowledgeable about their medical history.
January 21, 2020
Again completely satisfied
January 20, 2020
It's just a great office! No problems at all
January 17, 2020
Wonderful people that are caring and efficient in their treatment of my medical concerns.
January 14, 2020
I've been seeing Dr Lah for many years. I feel comfortable with him. When PIH discontinued taking Cigna. Our family changed Insurance Company so I could continue seeing him.
January 14, 2020
The staff was very good and very helpful. The tech and the anesthesiologist were very capable and friendly and the doctor was very reassuring and quite capable. Digestive Health has a great team which made the entire process go very smoothly.Thanks
January 13, 2020
All went wellI would you same provider and Dr.
January 13, 2020
The staff was great!
January 13, 2020
Great experience from a difficult procedure.
January 08, 2020
He is very insightful and helpful
December 31, 2019
Quick process with kindness
December 20, 2019
I will make a recommendation to friends and family
December 17, 2019
I feel like Dr. Lah has a lot of patients and doesn't get to know his outpatient community very well. He doesn't follow up very often unless you reach out to him with any concerns.
December 17, 2019
He was soft spoken and pleasant
December 17, 2019
I was treated extremely well and I'm very thankful for their care.
December 17, 2019
Very happy with the service I received at PIH. They are caring, professional and the whole procedure and fast and convenient.
December 13, 2019
I have the best doctor in the world that's what I would tell all my friends
December 11, 2019
Go see Dr. Lah!
December 10, 2019
December 09, 2019
If you need a Gastroenterologist. Dr. Lah's office is the place to go!