JA
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Alexander, Cardiologist in Danbury, CT?
Dr. Jonathan Alexander, MD is a Cardiologist, who primarily practices in Danbury, CT with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Alexander completed his residency at Yale New Haven Hosp, Internal Medicine. Dr. Alexander is fluent in English and Spanish, and is currently seeing new patients. Dr. Alexander’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Alexander’s office at (203) 797-7379.
What are Areas of Expertise for Dr. Alexander?
Dr. Jonathan Alexander, MD is a highly-rated, board-certified Cardiologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Alexander empowers patients to confidently navigate their health journey, specializing in Heart Disease, or comprehensive wellness support. Serving the Danbury/CT community, Dr. Alexander is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Alexander go to medical school and complete their residency?
Residency: Yale New Haven Hosp, Internal Medicine
Is Dr. Alexander board certified in Cardiologist?
Yes, Dr. Jonathan Alexander, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Alexander speak?
Dr. Alexander and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Alexander treat?
As a Cardiologist, Dr. Alexander diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Alexander. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.
Also known as:
- Circulatory System Surgery Aftercare
- After Surgery
- Post-cardiac surgery care
- Vascular surgery aftercare
- Heart surgery recovery
ICD-10 Codes:
- Z48812: Encounter for surgical aftercare following surgery on the circulatory system
Also known as:
- High Cholesterol
- Cholesterol
- Triglycerides
- Hyperlipidemia
- High lipids
- Dyslipidemia
- Hypercholesterolemia
- High blood cholesterol
- Elevated cholesterol
ICD-10 Codes:
- E785: Hyperlipidemia, unspecified
- E7800: Pure hypercholesterolemia, unspecified
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Hardening of the Arteries in the Heart without Chest Pain
- Atherosclerosis
- Coronary Artery Disease
- Silent Coronary Artery Disease
- Asymptomatic Atherosclerosis
ICD-10 Codes:
- I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris
Also known as:
- Atrial Fibrillation
- Premature Atrial Contractions
- Premature Ventricular Contractions
- Heart Palpitations
- Arrhythmia
- Afib
- A-fib
- Irregular heart rhythm
- PACs
- Atrial Ectopic Beats
- Skipped Heartbeat (Atrial)
- PVCs
- Ventricular Ectopic Beats
- Skipped Heartbeat (Ventricular)
- Skipped Heartbeat
- Fluttering Heart
- Pounding Heart
ICD-10 Codes:
- I4891: Unspecified atrial fibrillation
- I491: Atrial premature depolarization
- I493: Ventricular premature depolarization
- R002: Palpitations
Also known as:
- Abnormal EKG
- Heart Health Tests
- Irregular Electrocardiogram
- Unusual Heart Rhythm Test
- ECG Abnormalities
ICD-10 Codes:
- R9431: Abnormal electrocardiogram [ECG] [EKG]
Also known as:
- Past Heart Attack
- Heart Attack
- Previous Heart Attack
- Old Myocardial Infarction
- Prior Heart Attack
ICD-10 Codes:
- I252: Old myocardial infarction
Also known as:
- Chest Pain
- Chest discomfort
- Thoracic pain
- Upper body pain
ICD-10 Codes:
- R079: Chest pain, unspecified
Also known as:
- Coronary Artery Bypass Graft
- Coronary Artery Bypass Surgery
- CABG
- Heart Bypass Graft
- Bypass Surgery Graft
ICD-10 Codes:
- Z951: Presence of aortocoronary bypass graft
Also known as:
- Having a Pacemaker
- Pacemakers and Implantable Defibrillators
- Heart pacemaker
- Artificial pacemaker
- Implanted heart device
ICD-10 Codes:
- Z950: Presence of cardiac pacemaker
Also known as:
- Having a Prosthetic Heart Valve
- Heart Valve Disease
- Artificial heart valve
- Mechanical heart valve
- Bioprosthetic valve
ICD-10 Codes:
- Z952: Presence of prosthetic heart valve
Also known as:
- Cardiomyopathy
- Heart Muscle Disease
- Enlarged Heart
ICD-10 Codes:
- I429: Cardiomyopathy, unspecified
Also known as:
- Having a Coronary Angioplasty Implant or Graft
- Angioplasty
- Coronary stent
- Heart artery graft
- Angioplasty device
ICD-10 Codes:
- Z955: Presence of coronary angioplasty implant and graft
Also known as:
- Shortness of Breath
- Breathing Problems
- Difficulty breathing
- Breathlessness
- Dyspnea
ICD-10 Codes:
- R0602: Shortness of breath
Also known as:
- Narrowed Aortic Valve
- Heart Valve Disease
- Aortic Valve Stenosis
- Tight Aortic Valve
ICD-10 Codes:
- I350: Nonrheumatic aortic (valve) stenosis
Also known as:
- Chest Pain
- Chest discomfort
- Thoracic pain
- Pectoral pain
ICD-10 Codes:
- R0789: Other chest pain
Which procedures does Dr. Alexander perform as a Cardiologist?
As a Cardiologist, procedures performed by a Dr. Jonathan Alexander may include:
- Absent Pulmonary Valve Repair
- Anomalous Coronary Artery Angiography
- Anticoagulation Management
- Aortic Stenosis Repair
- Aortic Valve Repair / Replacement
- Aortopulmonary Window Repair
- Arterial Doppler
- Balloon Septostomy
For detailed information, please contact Dr. Alexander's office.
Does Dr. Alexander accept my insurance?
Dr. Alexander accepts most major insurance plans. Important: Please call our office at (203) 797-7379 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Alexander accept in Danbury, CT?
Dr. Alexander in Danbury, CT accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Cross and Blue Shield of North Carolina
Centene
CVS Health (formerly Aetna)
Department of Defense / Tricare
Elevance Health Inc. (formerly Anthem)
Express Scripts
Medicare
State of Connecticut
UnitedHealthcare
View All Insurances
Where is Dr. Alexander's office located?
Dr. Jonathan Alexander's Primary Practice
24 Hospital Ave
Danbury, CT 06810
(203) 797-7379
What is Dr. Alexander's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Alexander's National Provider Identifier (NPI) number is 1710921754.
What common questions do patients ask about Dr. Alexander?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Alexander
What is Dr. Jonathan Alexander's specialty?
Dr. Alexander is a Cardiologist near Danbury, CT. An internist specializing in cardiovascular diseases focuses on the diagnosis and management of complex heart and blood vessel conditions, including heart attacks and life-threatening arrhythmias. Contact Dr. Alexander to book an appointment today.
Is this Dr. Jonathan Alexander affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Alexander is affiliated with Danbury Hospital, Norwalk Hospital which are a Castle Connolly Top Hospitals. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
Where can I learn more about Cardiologist?
Explore Cardiologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Jonathan Alexander accepting new patients in Danbury, CT?
Yes, Dr. Jonathan Alexander is accepting new patients at this time.
Does Dr. Jonathan Alexander offer online booking?
Please contact Dr. Alexander's office at (203) 797-7379 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Jonathan Alexander?
Please contact Dr. Alexander's office at (203) 797-7379 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Jonathan Alexander have?
Dr. Jonathan Alexander is certified by the American Board of Internal Medicine.
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