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Dr. Seng Leong, MD

Dr. Seng Leong, MD

Internal Medicine*

Dr. Seng Leong, MD is an internist in Barrington, IL. He is affiliated with medical facilities such as Northwestern Medicine McHenry Hospital and Advocate Good Shepherd Hospital. He is accepting new patients and telehealth appointments.

4.3 Star Rating
Based on 22 reviews 4.3 Star Rating (22 reviews)

Practice

27750 W Il Route 22 Ste 240 Barrington, IL 60010
Telehealth available

Experience Check

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Dr. Leong's Reviews

Likelihood to recommend Dr. Leong

4.3
22 ratings, 4 with a written review
5 star
82%
82%
4 star
0%
0%
3 star
0%
0%
2 star
5%
5%
1 star
14%
14%

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Excellent medicine provided by a truly caring doc
Have been a patient since 1985. I’m sure glad I found him! As an advanced practices RN, I have sent my daughter and some of my best friends to him with complete confidence! His staff is friendly and caring and treats you as an individual at all times
What went well
  • Office environment
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
  • Difficult to schedule appointment
Helpful
Jane Williamson Stoutenburg – Nov 09, 2022
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A terrific caring man and a doctor in whom I have supreme confidence.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
3 others found this helpful
Helpful
R. Polen, Lake Zurich – Aug 30, 2019
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Dr. Leong is an excellent, intellectually curious physician, collaborative about my health. He always takes time to hear what I have to say, then examines and gives options. I believe he still treats each patient as a distinct entity, no "cookie cutter" medicine for him. As a Registered Nurse I can wholeheartedly recommend him.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
3 others found this helpful
Helpful
Sharon G. Lundstrom, RN in Barrington Hills – Sep 11, 2018
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Over 10 years and would recommend him to anyone, super nice, mellow attitude, all around great experience all the time
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
3 others found this helpful
Helpful
NWCycle in Mchenry, IL – Jun 09, 2016
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About Me

biography

Dr. Seng Leong, MD is an internist in Barrington, IL. He is affiliated with medical facilities such as Northwestern Medicine McHenry Hospital and Advocate Good Shepherd Hospital. He is accepting new patients and telehealth appointments.
  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Of Singapore

    Medical School
American Board of Medical Specialties®
American Board of Internal Medicine®
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. Information last updated March 29, 2025. To learn more about the difference between these sources, please refer to our FAQs.
Board actions foundState licensing board
  • English

  • Chinese

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Locations

Practice

Advocate Medical Group Barrington Family Medicine27750 W Il Route 22 Ste 240 Barrington, IL 60010
1

Practice

Advocate Medical Group Primary Care525 E Congress Pkwy Ste 350 Crystal Lake, IL 60014
2

Practice

Office525 E Congress Pkwy Ste 150 Crystal Lake, IL 60014
3

Affiliated Hospitals

  • Advocate Good Shepherd Hospital

    450 W Il Route 22
    Barrington, IL 60010
    Recipient of 26
    hospital awards

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    89%
    Patients said they were given information about recovering at home

    5% higher than the national average

    79%
    Patients said that nurses always listened to them and explained things well

    4% higher than the national average

    View all patient feedback
  • Northwestern Medicine McHenry Hospital

    4201 W Medical Center Dr
    McHenry, IL 60050
    Recipient of 33
    hospital awards

    America's 100 Best Hospitals Award™ (2025)

    Top 5% in the nation for consistently delivering clinical quality

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    88%
    Patients said they were given information about recovering at home

    4% higher than the national average

    79%
    Patients said that nurses always listened to them and explained things well

    4% higher than the national average

    View all patient feedback
  • Advocate Sherman Hospital

    1425 N Randall Rd
    Elgin, IL 60123
    Recipient of 3
    hospital awards

    Outstanding Patient Experience Award™ (2022)

    Top in the nation for overall patient experience based on nine measures related to doctor and nurse communication, hospital cleanliness and noise levels, and medication and post-discharge care instructions

    View all awards

    How patients felt about the care they received at this hospital.

    86%
    Patients said they were given information about recovering at home

    2% higher than the national average

    78%
    Patients said that nurses always listened to them and explained things well

    3% higher than the national average

    View all patient feedback
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