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Tim Patrick Dunn, MD

Mercy Clinic
Tim Patrick Dunn, MD, Mercy

Tim Patrick Dunn, MD

Specialty

  • Cardiology

Online Services

Schedule Online
(4.8/5)
764 Ratings | 182 Comments
Accepting new patients
Location of Your Visit
Mercy Clinic Heart and Vascular - Clayton-Clarkson Suite 230-A
15945 Clayton Road, Suite 230ABallwin, MO 63011
Mercy Clinic Heart and Vascular - Clayton-Clarkson Suite 230-APhone: (636) 256-5240

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To schedule an in-person or video visit (available only through certain locations).

Mercy Clinic Heart and Vascular - Old Tesson Suite 260
12348 Old Tesson Road, Suite 260St. Louis, MO 63128
Phone: (314) 251-1777
406.6 Miles
Mercy Clinic Heart and Vascular - Mercy Heart Hospital St. Louis
625 S. New Ballas Road, Suite 2015St. Louis, MO 63141
Phone: (314) 251-1700
408.0 Miles
Mercy Clinic Heart and Vascular - Clayton-Clarkson Suite 230-A
15945 Clayton Road, Suite 230ABallwin, MO 63011
Phone: (636) 256-5240
416.0 Miles

Select a Visit Type

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Existing Patient - Office Visit

I've seen this provider within the last three years and need an appointment (other than for a routine physical or well check). This is a standard visit length.

New Patient - Office Visit

I am new to this provider or it has been three years since my last visit. This is an extended visit length.

Questions? Call:
(636) 256-5240
Need a Heart Expert?
Whether you've had a heart attack, suffer from atrial fibrillation, or experience rapid heart rhythms, Mercy heart specialists can help. If you have an HMO plan, your insurance may require a referral from your primary care physician. Please contact your primary care physician prior to your appointment with the specialist to obtain the necessary referral.

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Location and Contact Information

About Tim Patrick Dunn, MD

Care Philosophy I think the best part about being a physician is interacting with my patients. Being able to develop a kind of long-term relationship with patients and I really see them progress with being sick at one point in the hospital and then seeing them in clinic when they are all better and are able to do what they want to do at home which is really the ultimate goal.
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      Education
      Medical School
      • Saint Louis University
      Fellowships
      • Barnes-Jewish Hospital-Cardiovascular Disease
      Residency
      • Stanford University Hospital-Internal Medicine
      Specialty
      Board Certifications
      • American Board of Internal Medicine
      • American Board of Internal Medicine (Cardiovascular Disease)
      Affiliations
      • Mercy Hospital St. Louis
      Languages
      • English
      Looking for more options?
      Find the Mercy provider who's right for you.
      View all Cardiology providers.
      Looking for more options?
      Find the Mercy provider who's right for you.
      View all Cardiology providers.

      Patient Ratings and Comments

      Rating

      From 762 patients
      (4.8/5)
      The provider rating is an average based on Mercy Clinic's post-care survey responses. To find out more, check out our frequently asked questions.

      Comments

      Viewing 1-3 of 182 comments
      Highlights from patients about their experience with this provider:
      • Mar 6, 2025
        (5/5)
        Dr. Dunn is calm and friendly. He explains things clearly. The office staff is friendly and cheerful. Everything runs smoothly and on time.
      • Mar 5, 2025
        (5/5)
        Dr. Dunn is a very caring Dr. and very easy to talk to and ask questions.
      • Mar 5, 2025
        (5/5)
        The Mercy staff is awesome! Dr. Dunn is wonderful and thorough! His support person Tia was extremely professional with wonderful customer service skills. I needed an at-home heart monitor and staff secured it immediately before I left. Then scheduled my six month follow-up.