The 20 Best Atrial Septal Defect (ASD) Doctors Near Me in Portland,, ME

Find the Top Atrial Septal Defect (ASD) Experts and Specialists

Last Updated: 09/26/2026

Save doctors for later
Sign Up
Not sure about your diagnosis?
Check Your Symptoms
Already have a doctor?
Find A Second Opinion

MediFind found 64 doctor with experience in Atrial Septal Defect (ASD) near Portland,, ME. Of these, 59 are Experienced and 5 are Advanced.

Location
LocationClose
64 providers found
    Advanced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Advanced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Referral may be required

    Mainehealth Maine Medical Center

    22 Bramhall St, 
    Portland,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Jon Donnelly is a Pediatric Cardiologist practicing medicine in Portland,, Maine. Dr. Donnelly is rated as an Advanced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Tetralogy of Fallot, Atrial Septal Defect (ASD), Congenital Heart Disease (CHD), and Ventricular Septal Defects. Dr. Donnelly is currently accepting new patients.

    Advanced in Atrial Septal Defect (ASD)
    Advanced in Atrial Septal Defect (ASD)
    Referral may be required

    St. Joseph Hospital

    360 Broadway, 
    Bangor, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Jennifer Monti is a Cardiologist practicing medicine in Bangor, Maine. Dr. Monti is rated as an Advanced provider by MediFind in the treatment of Atrial Septal Defect (ASD). She is also highly rated in 20 other conditions, according to our data. Her clinical expertise encompasses Heart Attack, Cardiomyopathy, Arrhythmias, Pacemaker Implantation, and Cardiac Ablation. Dr. Monti is currently accepting new patients.

    Advanced in Atrial Septal Defect (ASD)
    Advanced in Atrial Septal Defect (ASD)
    Referral may be required

    Mainehealth Maine Medical Center

    22 Bramhall St, 
    Portland, ME 
    Experience:
    17+ years
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Abraham Abernethy is a Cardiologist practicing medicine in Portland, Maine. He has been practicing medicine for over 17 years. Dr. Abernethy is rated as an Advanced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Apoplexy, Aortic Regurgitation, Sengers Syndrome, Embolectomy, and Pacemaker Implantation. Dr. Abernethy is currently accepting new patients.

    Learn about our expert tiers
    Advanced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Advanced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Referral may be required

    Maine Medical Partners

    96 Campus Dr Ste 1, 
    Scarborough,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Thomas Miller is a Pediatric Cardiologist practicing medicine in Scarborough,, Maine. Dr. Miller is rated as an Advanced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Atrial Septal Defect (ASD), Heart Murmurs, Congenital Heart Disease (CHD), and Ventricular Septal Defects. Dr. Miller is currently accepting new patients.

    Advanced in Atrial Septal Defect (ASD)
    Advanced in Atrial Septal Defect (ASD)
    Referral may be required

    Mainehealth Maine Medical Center

    22 Bramhall St, 
    Portland, ME 
    Languages Spoken:
    English
    Accepting New Patients

    James Powers is a Cardiologist practicing medicine in Portland, Maine. Dr. Powers is rated as an Advanced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 24 other conditions, according to our data. His clinical expertise encompasses Heart Failure with Preserved Ejection Fraction (HFpEF), Angina, Atherosclerosis, Pacemaker Implantation, and Endoscopy. Dr. Powers is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Experienced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Referral may be required

    Angela C Gilladoga MD

    417 State St Ste 200, 
    Bangor, ME 
    Languages Spoken:
    English

    Sean Hagenbuch is a Pediatric Cardiologist practicing medicine in Bangor, Maine. Dr. Hagenbuch is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Bicuspid Aortic Valve, Orthostatic Hypotension, Heart Murmurs, and Ventricular Septal Defects.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Maine Medical Partners

    96 Campus Dr Ste 1, 
    Scarborough,, ME 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jennifer Hillstrom is a Cardiologist practicing medicine in Scarborough,, Maine. Dr. Hillstrom is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). She is also highly rated in 33 other conditions, according to our data. Her clinical expertise encompasses Heart Failure with Preserved Ejection Fraction (HFpEF), Aortic Regurgitation, Aortic Valve Stenosis, Pacemaker Implantation, and Cardiac Ablation. Dr. Hillstrom is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Mainehealth Maine Medical Center

    22 Bramhall St, 
    Portland, ME 
    Languages Spoken:
    English
    Accepting New Patients

    James Parker is a Cardiologist practicing medicine in Portland, Maine. Dr. Parker is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 41 other conditions, according to our data. His clinical expertise encompasses Aortic Regurgitation, Necrosis, Pediatric Myocarditis, Pacemaker Implantation, and Angioplasty. Dr. Parker is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Experienced in Atrial Septal Defect (ASD)
    Pediatric Cardiology
    Referral may be required

    Mainehealth Cardiac Rehab Scarborough

    96 Campus Dr, 
    Scarborough,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Lauren Andrade is a Pediatric Cardiologist practicing medicine in Scarborough,, Maine. Dr. Andrade is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Congenital Heart Disease (CHD), Coarctation of the Aorta, Transposition of the Great Arteries, and Bicuspid Aortic Valve. Dr. Andrade is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Interventional Cardiology
    Experienced in Atrial Septal Defect (ASD)
    Interventional Cardiology
    Referral may be required

    St. Mary's Regional Medical Center

    93 Campus Ave, 
    Lewiston, ME 
    Languages Spoken:
    English

    David Butzel is an Interventional Cardiologist practicing medicine in Lewiston, Maine. Dr. Butzel is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Aortic Valve Stenosis, Heart Attack, Apoplexy, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Seacoast Cardiology Associates P.A.

    12 Hospital Dr Ste 9, 
    York, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Jeffrey Colnes is a Cardiologist practicing medicine in York, Maine. Dr. Colnes is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 42 other conditions, according to our data. His clinical expertise encompasses Coronary Heart Disease, Atherosclerosis, Heart Attack, Pacemaker Implantation, and Heart Bypass Surgery. Dr. Colnes is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Northeast Cardiology Associates

    1 Northeast Dr, 
    Bangor,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Matthew Mckay is a Cardiologist practicing medicine in Bangor,, Maine. Dr. Mckay is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 28 other conditions, according to our data. His clinical expertise encompasses Heart Attack, Apoplexy, Necrosis, Transcatheter Aortic Valve Replacement (TAVR), and Aortic Valve Replacement. Dr. Mckay is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Pediatric Cardiology | Pediatrics | Cardiology
    Experienced in Atrial Septal Defect (ASD)
    Pediatric Cardiology | Pediatrics | Cardiology
    Referral may be required
    43 Whiting Hill Rd, Suite 250, 
    Brewer, ME 
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Michael Mattingly is a Pediatric Cardiologist and a Pediatrics provider practicing medicine in Brewer, Maine. Dr. Mattingly is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Heart Murmurs, Pulmonary Supravalvular Stenosis, Pulmonary Valve Stenosis, and Familial Dysautonomia. Dr. Mattingly is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Internal Medicine
    Experienced in Atrial Septal Defect (ASD)
    Internal Medicine

    Mainehealth Cardiac Rehab Scarborough

    96 Campus Dr, 
    Scarborough,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Amina Qazi is a primary care provider, practicing in Internal Medicine in Scarborough,, Maine. Dr. Qazi is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Heart Attack, Apoplexy, Necrosis, and Coronary Heart Disease. Dr. Qazi is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Northeast Cardiology Associates

    1 Northeast Dr, 
    Bangor,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Guillermo Crespo is a Cardiologist practicing medicine in Bangor,, Maine. Dr. Crespo is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 36 other conditions, according to our data. His clinical expertise encompasses Heart Attack, Apoplexy, Necrosis, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR). Dr. Crespo is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Cardiology
    Experienced in Atrial Septal Defect (ASD)
    Cardiology
    Referral may be required

    Northeast Cardiology Associates

    1 Northeast Dr, 
    Bangor,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Chae Choi is a Cardiologist practicing medicine in Bangor,, Maine. Dr. Choi is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). She is also highly rated in 39 other conditions, according to our data. Her clinical expertise encompasses Heart Attack, Apoplexy, Necrosis, and Arterial Embolism. Dr. Choi is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Mainehealth Maine Medical Center

    22 Bramhall St, 
    Portland,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Patrick Hohl is a Cardiologist practicing medicine in Portland,, Maine. Dr. Hohl is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 29 other conditions, according to our data. His clinical expertise encompasses Heart Failure with Preserved Ejection Fraction (HFpEF), Aortic Regurgitation, Vasculitis, Atherectomy, and Pacemaker Implantation. Dr. Hohl is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Northeast Cardiology Associates

    1 Northeast Dr, 
    Bangor,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Isidore Okere is a Cardiologist practicing medicine in Bangor,, Maine. Dr. Okere is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 34 other conditions, according to our data. His clinical expertise encompasses Heart Attack, Apoplexy, Necrosis, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR). Dr. Okere is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Northeast Cardiology Associates

    1 Northeast Dr, 
    Bangor,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Matthew Rowe is a Cardiologist practicing medicine in Bangor,, Maine. Dr. Rowe is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 38 other conditions, according to our data. His clinical expertise encompasses Heart Attack, Apoplexy, Arrhythmias, and Sick Sinus Syndrome. Dr. Rowe is currently accepting new patients.

    Experienced in Atrial Septal Defect (ASD)
    Experienced in Atrial Septal Defect (ASD)
    Referral may be required

    Northern Light Sebasticook Valley Hospital

    447 N Main St, 
    Pittsfield,, ME 
    Languages Spoken:
    English
    Accepting New Patients

    Michael Lemieux is a Cardiologist practicing medicine in Pittsfield,, Maine. Dr. Lemieux is rated as an Experienced provider by MediFind in the treatment of Atrial Septal Defect (ASD). He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Atrial Fibrillation, Angina, Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Lemieux is currently accepting new patients.

    Showing 1-20 of 64

    Last Updated: 09/26/2026

    What is the definition of Atrial Septal Defect (ASD)?

    Atrial septal defect (ASD) is a heart defect that is present at birth (congenital).

    As a baby develops in the womb, a wall (septum) forms that divides the upper chamber into a left and right atrium. When this wall does not form correctly, it can result in a defect that remains after birth. This is called an atrial septal defect, or ASD.

    When should I see an Atrial Septal Defect (ASD) doctor near Portland,, ME?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing an Atrial Septal Defect (ASD) doctor near Portland,, ME?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Atrial Septal Defect (ASD) doctors near Portland,, ME?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Atrial Septal Defect (ASD) doctors near Portland,, ME?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with an Atrial Septal Defect (ASD) doctor near Portland,, ME?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Atrial Septal Defect (ASD) doctor search results page. 

    Why is it important to get a second opinion from a different Atrial Septal Defect (ASD) doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with an Atrial Septal Defect (ASD) doctor near Portland,, ME?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Atrial Septal Defect (ASD) doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Atrial Septal Defect (ASD) doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Atrial Septal Defect (ASD) doctors near Portland,, ME?

    Look for the filter feature on the left side of the Atrial Septal Defect (ASD) doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find an Atrial Septal Defect (ASD) doctor that offers video calls?

    Look for the filter feature on the left-side of the Atrial Septal Defect (ASD) doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

    Read more about our Content Policy. 

    More Atrial Septal Defect (ASD) Doctors by city