Dr. Justin T. Mao, MD | Downers Grove, IL | Cardiologist

.about .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Justin Mao treats atrial fibrillation and supraventricular tachycardia and practices cardiology and internal medicine. He speaks Polish and Spanish and has 25 years of experience. Dr. Mao completed his residency at Boston Medical Center and trained at Chicago Medical School at Rosalind Franklin University. He is affiliated with Advocate Good Samaritan Hospital, Edward Hospital, Rml Specialty Hospital Hinsdale, and Edward Heart Hospital, and sees patients in Downers Grove and Naperville, Illinois.

Overview based on verified provider data

accepting new patients
3.4

12 Ratings
25 years of experience
speaks Polish, Spanish
Boston Medical Center
5 written reviews
2 specialties
7 areas of expertise
4 hospital affiliations
3 office locations
Male

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Mao's Ratings and Reviews

3.4

12 Ratings with 5 written Reviews

Average Wait Time 17 Minutes

How was your appointment with
Dr. Mao?

Patients’ Perspective

Gave an accurate diagnosis: (3) Did WellNeeds Improvement (2)
Had a good bedside manner: (3) Did WellNeeds Improvement (2)
Spent time with me: (3) Did WellNeeds Improvement (2)
Provided follow-up after the visit: (3) Did WellNeeds Improvement (2)
Flexible scheduling: (3) Did WellNeeds Improvement (2)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

12 ratings & reviews

Sort:

Showing 1 to 5 of 5 reviews

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

This MD should no longer be allowed to practice in Edwards with the inappropriate bedside manner he provides. He’s unprofessional, inconsiderate, immature, and lacks compassion towards a patient’s cardiac care. I sincerely hope that the hospital reconsiders his employment. Any patients needing a experienced and caring MD will not find one in Dr. Mao.

Did Well

Needs Improvement

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

February 20th, 2021

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

cause lung problem after surgery

March 10th, 2018

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr Mao was able to quickly and accurately diagnose and treat my heart condition. He performed a procedure that was scary to me, but his description gave me great comfort. My procedure was 100% effective proven by his use of follow-up technology to monitor my heart. His office followed-up with me routinely.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

December 14th, 2017

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

What a brilliant, results oriented young doctor!!! Dr. Mao has the skills and confidence of a seasoned professional coupled with the energy and enthusiasm of an up and coming rockstar!! I could not recommend him enough. You could not go wrong with Judtin, He is EXCEPTIONAL!!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

August 24th, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Even others along with myself has said he is perhaps one of the best in the entire area. He's good...real good

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

November 17th, 2014

Advocate Good Samaritan Hospital

3815 Highland AveDowners Grove, IL 60515

Tel: (630) 275-5900

Edward Heart Hospital

801 S Washington StNaperville, IL 60540

Tel: (630) 527-3000

Advocate Medical Group Cardiology

3825 Highland Ave Ste 400Downers Grove, IL 60515

Mon8:00 am - 6:00 pm

Tue8:00 am - 6:00 pm

Wed8:00 am - 6:00 pm

Thu8:00 am - 6:00 pm

Fri8:00 am - 6:00 pm

SatClosed

SunClosed


Dr. Justin Tze Howe Mao, MD	Dr. Amir Darki, MD	Dr. Max Jacob Liebo, MD	Dr. Sandeep Rajan Mehta, MD
Cardiology	Cardiology	Cardiology	Cardiology
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
3.4 (12 Ratings)	4.3 (6 Ratings)	5 (2 Ratings)	5 (2 Ratings)
25 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option
Speaks Polish, Spanish	Speaks English, Polish, Spanish	Speaks English, Polish, Spanish
Downers Grove , IL	Maywood , IL	Maywood , IL	Maywood , IL
Med School: Chicago Medical School At Rosalind Franklin University-Medicine & Sciences
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Acute Coronary Syndrome (ACS)
Defibrillators
Heart Block
High Blood Pressure (Hypertension)
High Cholesterol (Hypercholesterolemia)
Internal Medicine
Unstable Angina

Dr. Justin Tze Howe Mao holds an expired medical license in the state of Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at Boston Medical Center.

Medical School

Graduated from Chicago Medical School At Rosalind Franklin University-Medicine & Sciences in 2001.

NPI Number

Dr. Mao's NPI number is 1427052273.

John Flores
Infectious Disease
9 Years Exp | Chicago, IL
(0)
Salil Kalra
Critical Care Medicine
10 Years Exp | Arlington Heights, IL
(0)
Lillian Dasso Pierce
Diagnostic Radiology
| Berwyn, IL
(0)
Farheen Ali
Infectious Disease
32 Years Exp | Evanston, IL
(0)
Nurbek Mambetsariev
Allergy & Immunology
8 Years Exp | Chicago, IL
(0)
Wadchara Pumpradit
Infectious Disease
31 Years Exp | Evanston, IL
(0)
Nancy S Mhangami
Nurse Practitioner
| Arlington Heights, IL
(0)
Amar Agadi
Pathology
18 Years Exp | Elgin, IL
(0)
Sarah Anne Glait
Infectious Disease
6 Years Exp | Chicago, IL
(0)
Julio Lam Salazar
Emergency Medicine
25 Years Exp | Chicago, IL
(0)

Does Dr. Justin Mao accept virtual/telehealth appointments?: Dr. Justin Mao has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. Justin Mao accept my insurance?: You can see the insurance plans that Dr. Justin Mao accepts on their Vitals profile.
What languages does Dr. Justin Mao speak?: Dr. Justin Mao speaks Polish and Spanish.
Is Dr. Justin Mao accepting new patients?: Dr. Justin Mao is accepting new patients on Vitals. View Dr. Justin Mao's profile on Vitals to make an appointment.
How can I make an appointment with Dr. Justin Mao?: You can find contact information for Dr. Justin Mao here on Vitals.

This provider profile is built using data from:

NPPES NPI Registry
State medical licensing boards
Healthcare system and provider network data

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.

Copyright © 2026 Vitals Consumer Services, LLC. US Patent No. 8, 694, 441. All Rights Reserved.
As more fully set forth in this website's terms of use . (1) nothing contained on or offered by or through this website should be construed as medical advice and should not be relied upon for medical diagnosis or treatment. Vitals Consumer Services, LLC ("Vitals"). the provider of this website, does not recommend or endorse any particular healthcare provider whose information or ratings appear on this website; and (2) Vitals has granted you a limited license to access and use this website for your own noncommercial use. You are not permitted to copy, reproduce, distribute, transmit, mirror, frame, scrape, extract, wrap, create derivative works of, reverse engineer, decompile or disassemble any part or aspect of this website.