NR
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Riddell, Cardiologist in Lowell, MA?
Dr. Nathan Riddell, MD is a Cardiologist, who primarily practices in Lowell, MA with 2 additional practice locations. He is board certified. Dr. Riddell graduated from St. George's University School of Medicine and completed his residency at University of Massachusetts Program. Dr. Riddell is fluent in English, and is currently seeing new patients. Dr. Riddell’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Riddell’s office.
Where did Dr. Riddell go to medical school and complete their residency?
Residency: University of Massachusetts Program
Medical School: St. George's University School of Medicine
What languages does Dr. Riddell speak?
Dr. Riddell and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Riddell treat?
As a Cardiologist, Dr. Riddell 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. Riddell. 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:
- Atrial Fibrillation
- Slow Heart Rate
- Fast Heartbeat
- Other Heart Rhythm Disorder
- Heart Palpitations
- Premature Ventricular Contractions
- Arrhythmia
- Afib
- A-fib
- Irregular heart rhythm
- Bradycardia
- Slow Pulse
- Low Heart Rate
- Tachycardia
- Rapid heart rate
- Racing heart
- Cardiac Dysrhythmia
- Irregular Heartbeat
- Heart Rhythm Problems
- Skipped Heartbeat
- Fluttering Heart
- Pounding Heart
- PVCs
- Ventricular Ectopic Beats
- Skipped Heartbeat (Ventricular)
ICD-10 Codes:
- I4891: Unspecified atrial fibrillation
- R001: Bradycardia, unspecified
- R000: Tachycardia, unspecified
- I498: Other specified cardiac arrhythmias
- R002: Palpitations
- I493: Ventricular premature depolarization
- I480: Paroxysmal atrial fibrillation
Also known as:
- Leaky Mitral Valve
- Narrowed Aortic Valve
- Tricuspid Valve Insufficiency
- Heart Valve Disease
- Mitral Valve Insufficiency
- Mitral Regurgitation
- Aortic Valve Stenosis
- Tight Aortic Valve
- Leaky tricuspid valve
- Tricuspid regurgitation
ICD-10 Codes:
- I340: Nonrheumatic mitral (valve) insufficiency
- I350: Nonrheumatic aortic (valve) stenosis
- I361: Nonrheumatic tricuspid (valve) insufficiency
Also known as:
- Chest Pain
- Chest discomfort
- Thoracic pain
- Upper body pain
ICD-10 Codes:
- R079: Chest pain, unspecified
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:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Enlarged Heart
- Heart Disease
- Cardiomegaly
- Big heart
- Heart enlargement
ICD-10 Codes:
- I517: Cardiomegaly
Also known as:
- Shortness of Breath
- Breathing Problems
- Difficulty breathing
- Breathlessness
- Dyspnea
ICD-10 Codes:
- R0602: Shortness of breath
Also known as:
- Heart Attack (NSTEMI)
- Heart Attack
- Myocardial Infarction
- Non-STEMI
- Less Severe Heart Attack
ICD-10 Codes:
- I214: Non-ST elevation (NSTEMI) myocardial infarction
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:
- Other Pre-Procedure Examination
- Various pre-op checks
- Miscellaneous pre-surgery exams
- Other pre-treatment assessments
ICD-10 Codes:
- Z01818: Encounter for other preprocedural examination
Also known as:
- Fainting
- Syncope
- Passing out
- Collapse
ICD-10 Codes:
- R55: Syncope and collapse
Also known as:
- Pre-Procedure Heart Examination
- Pre-Surgery Cardiac Checkup
- Heart Health Assessment (Before Procedure)
- Cardiovascular Clearance Exam
ICD-10 Codes:
- Z01810: Encounter for preprocedural cardiovascular examination
Which procedures does Dr. Riddell perform as a Cardiologist?
As a Cardiologist, procedures performed by a Dr. Nathan Riddell 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. Riddell's office.
Does Dr. Riddell accept my insurance?
Dr. Riddell accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Riddell accept in Lowell, MA?
Dr. Riddell in Lowell, MA 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 Blue Shield of Massachusetts
Boston Medical Center
CVS Health (formerly Aetna)
Express Scripts
Fallon Community Health Plan
Medicare
Point32Health
State of Massachusetts
UnitedHealthcare
View All Insurances
Where is Dr. Riddell's office located?
What is Dr. Riddell's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Riddell's National Provider Identifier (NPI) number is 1245670983.
What common questions do patients ask about Dr. Riddell?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Riddell
What is Dr. Nathan Riddell's specialty?
Dr. Riddell is a Cardiologist near Lowell, MA. 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. Riddell to book an appointment today.
Is this Dr. Nathan Riddell affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Riddell is affiliated with Lowell General Hospital, Tufts Medical Center 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 Nathan Riddell accepting new patients in Lowell, MA?
Yes, Dr. Nathan Riddell is accepting new patients at this time.
Does Dr. Nathan Riddell offer online booking?
Please contact Dr. Riddell's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Nathan Riddell?
Please contact Dr. Riddell's office for information regarding telehealth appointment availability or for scheduling assistance.
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