John J. Lah, MD | United Gastroenterologists
Health & Medical · Gastroenterology

John J. Lah, MD | United Gastroenterologists

3851 Katella Ave, SUITE 205, Los Alamitos, California, 90720

Google Maps Updated: 13 May 2026
Authenticity Score: 84/100
About

Dr. Lah is praised for his teaching style and thoroughness, with many patients feeling well-informed about their health. The clinical team is generally seen as professional and kind. However, the office administration is a significant source of frustration, with reports of poor communication, unreturned calls, and billing issues. Patients love the doctor but often struggle with the office staff.

Our Review Process
20
Most Relevant
13
Newest
20
Highest
17
Lowest

We analyze 70 Google Maps public reviews (Most relevant, Newest, Highest rating, Lowest rating) from every angle to find the real story so you know exactly what to expect. We use Artificial Intelligence to analyze these reviews and filter out spam to highlight only authentic feedback.

Performance Scores
Medical Expertise 90/100
Admin Efficiency 30/100
Pro Tip

If you have trouble reaching the office, try contacting the surgery center directly for follow-up questions.

Pros & Cons

✓ What Works Well

  • Thorough and educational doctor
  • Professional and kind clinical staff
  • Seamless surgical experience

✗ Areas to Improve

  • Poor administrative support
  • Difficulty reaching the office by phone
  • Billing and insurance frustrations
Frequently Asked Questions
  • Why can't I get a call back?
  • Is the billing process always this confusing?
User Feedback

Dr. Lah is an excellent teacher, but the office is a mess.

Great clinical care, just don't expect much from the front desk.

I love the doctor, but I'm tired of the administrative runaround.

Location Details
Street: 3851 Katella Ave, SUITE 205
City: Los Alamitos
State: California
Postcode: 90720
Country: United States
Location
3851 Katella Ave SUITE 205, Los Alamitos, CA 90720
Quick Info
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