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Dr. Mark O'Connor Jr, MD
Cardiology* Age 66
Dr. Mark O'Connor Jr, MD
5.0 (1 Ratings)
Map Pin Small Toledo, OH
Dr. Mark O'Connor Jr, MD is a Cardiologist in Toledo, OH.
Dr. Mark O'Connor Jr, MD
5.0 (1 Ratings)

Dr. Mark O'Connor Jr, MD

Cardiology* Age 66
Toledo, OH
Accepting new patients
40 years of experience
Dr. Mark O'Connor Jr, MD is a Cardiologist in Toledo, OH.

About Dr. Mark O'Connor Jr, MD

Dr. O'Connor Jr graduated from UNIVERSITY OF MICHIGAN / MEDICAL CENTER. Dr. Mark O'Connor Jr, MD is a Cardiologist in Toledo, OH and has 40 years experience. Dr. O'Connor Jr's office accepts new patients. Dr. O'Connor Jr is board certified in Cardiovascular Disease and accepts multiple insurance plans.

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Friendly Staff

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Experience Check

Enter a condition or procedure
Syncope
Cardiomyopathy, Dilated
Sick Sinus Syndrome
Syncope
Cardiomyopathy, Dilated
Sick Sinus Syndrome
Syncope
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Cardiomyopathy, Dilated
Sick Sinus Syndrome
Tilt_Testing
Vascular Duplex Ultrasonography and Plethysmography
Electrocardiogram (EKG)
Angina
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Automatic Implantable Cardioverter Defibrillator (ICD) Implantation
Ventricular Tachycardia (VT)
Hypertension
Cardiomyopathy
Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
Cardiac Ultrasound
Atrial Fibrillation
Arrhythmias
Chest Pain
Third Degree Heart Block
Coronary Artery Disease (CAD)
Septal Defect
Paroxysmal Atrial Fibrillation
Cardiac Myocardial Perfusion Imaging
Atherosclerosis
Sinus Bradycardia
Heart Disease
Patent Foramen Ovale (PFO)
Heart Palpitations
Congenital Heart Defects
Supraventricular Tachycardia
Peripheral Vascular Disease (PAD, PVD)
Unstable Angina
Hypotension (Excluding Maternal)
Hypotension
Acute Coronary Syndrome
Hyperlipidemia
Tricuspid Valve Disease
Lipid Disorders
Heart Attack (NSTEMI)
Heart Attack (Acute Myocardial Infarction)
Congestive Heart Failure
Atrial Septal Defect
Aortic Valve Disease
Ventricular Fibrillation
Systolic Heart Failure
Chronic Congestive Heart Failure
Mitral Valve Disease
Orthostatic Hypotension
Hypertensive Heart Disease
Heart Valve Disorders
Hypertensive Heart with Failure
Sinus Tachycardia
Chest CT (incl. Heart and Lungs)
Aortic Valve Regurgitation
Atrial Flutter
Cardiac Catheterization (incl. Coronary Angiography)
Acute Congestive Heart Failure
Heart Murmur
Peripheral Edema
Vitamin D Deficiency
Rheumatic Tricuspid Disease
Hypertensive Chronic Kidney Disease
Acute Deep Vein Thrombosis (DVT)
Acute Venous Embolism Thrombosis
Aneurysm
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Aortic Aneurysm
Aortic Dissection
Aortic Ectasia
Aortic Stenosis
Aortopulmonary Septal Defect
Atherosclerosis of Aorta
Atrioventricular Septal Defect (AVSD)
Atypical Atrial Flutter
Cardiomegaly
Cardiomyopathy, Hypertrophic
Cardiomyopathy, Restrictive
Carotid Artery Disease
Carotid Sinus Syncope
Chronic Deep Vein Thrombosis (DVT)
Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
Chronic Venous Embolism Thrombosis
Cor Pulmonale
Deep Vein Thrombosis (DVT)
Ehlers-Danlos Syndrome
First Degree Heart Block
Heart Attack (STEMI)
Hyperkalemia
Hypertensive Heart and Chronic Kidney Disease
Hypertensive Heart without Failure
Hypokalemia
Limb Swelling
Limb Swelling Caused by Fluid Overload
Long QT Syndrome
Mitral and Aortic Valve Disorder
Mitral Valve Prolapse
Mitral Valve Regurgitation
Mitral Valve Stenosis
Nonrheumatic Mitral Stenosis
Nonrheumatic Tricuspid Disease
Pericardial Disease
Pericarditis
Peripheral Arterial Disease of Extremities
Postpartum Cardiomyopathy
Postural Orthostatic Tachycardia Syndrome
Primary Pulmonary Hypertension
Prinzmetal Angina
Pulmonary Edema
Pulmonary Hypertension
Pulmonary Insufficiency
Pulmonary Valve Disease
Rheumatic Aortic Valve Disorders
Second Degree Heart Block
Systemic Vasculitis
Type 2 Heart Block - Mobitz
Typical Atrial Flutter
Venous Compression
Ventricular Septal Defect
Wolff-Parkinson-White Pattern
Ablation for Cardiac Arrhythmias
Arrhythmia Screening
Cardiac Imaging
Cardiovascular Diagnostic Test
Cardiovascular Stress Test
Cardioversion, Elective
Chest Pain Evaluation
Cholesterol Screening
Coronary Angiogram
Coronary Angioplasty, Atherectomy and Stent
Dobutamine Thallium Stress Test
HeartAware Online Risk Screening
Insertion of Left Ventricular Lead for Pacemaker or Cardioverter and Defibrillator
Nuclear Stress Testing
Pacemaker Insertion or Replacement
Peripheral Arterial Disease Screening (PAD)
Peripheral Artery Catheterization
Pharmacologic Nuclear Stress Test
Pharmacologic Stress Test, Adenosine
Removal or Revision of Pacemaker or Cardioverter and-or Defibrillator
Stress Test
Structural Heart Disease Evaluations and Treatment
TCD Bubble Test
Thoracentesis
Tilt Table Testing
Treadmill Stress Test

Accepted Insurance Plans

* Please verify this information when scheduling an appointment.
  • Nexus Open Access
    Options PPO
    Choice Plus POS
    Medica Choice
    Navigate POS
    Navigate HMO
  • Curative PPO
    Curative EPO
    Curative PPO Plus
  • Health Network Option Open Access
    Aetna
    Managed Choice (Open Access) POS
    Choice Plus POS II
    Elect Choice (Open Access) EPO
    Premier Care Network APCN Choice (OAMC) POS II
    Premier Care Network Plus - Innovation Health
    Open Choice PPO
  • SuperMed HMO
    SuperMed PPO Plus
  • Blue Card PPO
  • First Health (Coventry Health Care) PPO
  • Ohio (PHC) HMO
  • Choice POS
    Choice Care Network PPO
    Choice Care PPO
  • Blue Care Network PCP Focus Network HMO
    Blue Cross Premier PPO
  • Anthem Blue Cross Blue Shield HMO
    Anthem Blue Cross Blue Shield PPO
    Blue Preferred Plus POS
  • Priority Health HMO
    Priority PPO
  • Open Access Plus
    Cigna PPO
  • Blue Preferred-OH POS
  • HAP Insurance PPO
    HAP Insurance HMO

Where Dr. Mark O'Connor Jr, MD Sees Patients

  1. 1 Cardiovascular Physicians Management LLC
    2409 Cherry St Ste 100, Toledo, OH 43608
    Icon Directions Right Arrow Directions Phone Icon (419) 251-3232
  2. 2 Office
    12623 Eckel Junction Rd Ste 2500, Perrysburg, OH 43551
    Icon Directions Right Arrow Directions Phone Icon (419) 873-6695
  3. 3 Aspen Medical Partners LLC
    7581 Secor Rd, Lambertville, MI 48144
    Icon Directions Right Arrow Directions Phone Icon (734) 856-6360
  4. 4 Office
    470 W Market St, Tiffin, OH 44883
    Icon Directions Right Arrow Directions Phone Icon (419) 443-9650
    Monday
    08:30 - 16:30
    Tuesday
    08:30 - 16:30
    Wednesday
    08:30 - 16:30
    Thursday
    08:30 - 16:30
    Friday
    08:30 - 16:30

What Patients Say

Likelihood to recommend Dr. O'Connor Jr
5.0
Based on 1 Reviews
5 Stars (1)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (0)

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Patient Reviews
Jun 30, 2025
Doctor O’connor is the best cardiologist ever he is very thorough,very kind and caring!
Carrie — Jun 30, 2025
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Meet Dr. Mark O'Connor Jr, MD

Specialties*
Cardiology
Internal Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
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FAQs About Dr. O'Connor Jr's Practice

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Mark O'Connor Jr, MD. To arrange an appointment, call the number on Dr. O'Connor Jr's profile.

Dr. Mark O'Connor Jr, MD is affiliated with Mercy Health Tiffin Hospital, ProMedica Toledo Hospital, Mercy Health-St. Vincent Medical Center and Fulton County Health Center.

Yes, Dr. Mark O'Connor Jr, MD holds board certification in Cardiovascular Disease and Internal Medicine.
Training & Medical Education
Medical Education
  • UNIVERSITY OF MICHIGAN / MEDICAL CENTER
    1986
Medical Education
Board Certifications
  • Cardiovascular Disease and Internal Medicine
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

Hospitals Where Dr. Mark O'Connor Jr, MD Practices

  • Mercy Health Tiffin Hospital

    45 St Lawrence Dr, Tiffin, OH

  • ProMedica Toledo Hospital

    1 Promedica Pkwy, Toledo, OH

  • Mercy Health-St. Vincent Medical Center

    2213 Cherry St, Toledo, OH

  • Fulton County Health Center

    725 S Shoop Ave, Wauseon, OH

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