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Dr. Warren Johnston, MD

Cardiology* Age 75
Dr. Warren Johnston, MD
3.4 (13 Ratings)

Offers telehealth

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Dr. Warren Johnston, MD is a Cardiologist in Orange, CA.
Dr. Warren Johnston, MD
3.4 (13 Ratings)
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Dr. Warren Johnston, MD

Cardiology* Age 75
Orange, CA
Accepting new patients

Offers telehealth

Dr. Warren Johnston, MD is a Cardiologist in Orange, CA.

About

Dr. Johnston graduated from University of Rochester. Dr. Warren Johnston, MD is a Cardiologist in Orange, CA. Dr. Johnston currently practices at St. Joseph Heritage Orange - Cardiology and are affiliated with Providence St. Joseph Hospital Orange. Dr. Johnston has experience treating conditions like Supraventricular Tachycardia, Atherosclerosis of Aorta and Rheumatic Tricuspid Disease among other conditions at varying frequencies. At present, Dr. Johnston received an average rating of 3.4/5 from patients and has been reviewed 13 times. Dr. Johnston's office accepts new patients and telehealth appointments. Dr. Johnston also speaks Arabic. Dr. Johnston is board certified in Cardiovascular Disease and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

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Experience Check

Enter a condition or procedure
Supraventricular Tachycardia
Atherosclerosis of Aorta
Rheumatic Tricuspid Disease
Supraventricular Tachycardia
Atherosclerosis of Aorta
Rheumatic Tricuspid Disease
Supraventricular Tachycardia
Atherosclerosis of Aorta
Rheumatic Tricuspid Disease
Cardiomegaly
First Degree Heart Block
Abdominal Aortic Aneurysm (AAA)
Acute Deep Vein Thrombosis (DVT)
Acute Venous Embolism Thrombosis
Angina
  • View other providers who treat Angina
Aortic Aneurysm
Aortic Ectasia
Aortic Valve Disease
Aortic Valve Regurgitation
Arrhythmias
Atherosclerosis
Atrial Fibrillation
Atrial Flutter
Cardiomyopathy
Cardiomyopathy, Hypertrophic
Carotid Artery Disease
Chest Pain
Chronic Congestive Heart Failure
Chronic Deep Vein Thrombosis (DVT)
Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
Chronic Venous Embolism Thrombosis
Congestive Heart Failure
Coronary Artery Disease (CAD)
Deep Vein Thrombosis (DVT)
Endocarditis
Heart Attack (Acute Myocardial Infarction)
Heart Disease
Heart Murmur
Heart Palpitations
Heart Valve Disorders
Hyperlipidemia
Hypertension
Hypertensive Chronic Kidney Disease
Hypertensive Heart and Chronic Kidney Disease
Hypertensive Heart Disease
Hypertensive Heart with Failure
Hypertensive Heart without Failure
Hypokalemia
Lipid Disorders
Mitral and Aortic Valve Disorder
Mitral Valve Disease
Mitral Valve Prolapse
Mitral Valve Regurgitation
Mitral Valve Stenosis
Noninfective Endocarditis
Nonrheumatic Tricuspid Disease
Paroxysmal Atrial Fibrillation
Pericardial Disease
Peripheral Edema
Peripheral Vascular Disease (PAD, PVD)
Pulmonary Hypertension
Pulmonary Valve Disease
Rheumatic Aortic Valve Disorders
Rheumatic Mitral Stenosis
Second Degree Heart Block
Secondary Renovascular Hypertension
Sick Sinus Syndrome
Sinus Bradycardia
Sinus Tachycardia
Syncope
  • View other providers who treat Syncope
Systolic Heart Failure
Thoracoabdominal Aortic Aneurysm
Tricuspid Valve Disease
Type 2 Heart Block - Mobitz
Ventricular Tachycardia (VT)
Cardiac Myocardial Perfusion Imaging
Cardiac Ultrasound
Chest CT (incl. Heart and Lungs)
Electrocardiogram (EKG)
Tilt_Testing
Vascular Duplex Ultrasonography and Plethysmography
Acute Congestive Heart Failure
Acute Coronary Syndrome
Aneurysm
  • View other providers who treat Aneurysm
Aneurysm of Heart
Aortic Dissection
Aortic Stenosis
Atrial Septal Defect
Atypical Atrial Flutter
Benign Heart Tumors
Cardiomyopathy, Dilated
Chronic Thromboembolic Pulmonary Hypertension
Coarctation of the Aorta
Congenital Aortic Valve Disorders
Congenital Heart Defects
Congenital Heart Disease
Cor Pulmonale
Coronary Artery Aneurysm
Coronary Vessel Malformation
Heart Attack (NSTEMI)
Heart Attack (STEMI)
Hypotension
Hypotension (Excluding Maternal)
Idiopathic Hypotension
Limb Swelling Caused by Fluid Overload
Long COVID Disorder
Long QT Syndrome
Patent Ductus Arteriosus
Patent Foramen Ovale (PFO)
Pericarditis
Peripheral Arterial Disease of Extremities
Primary Pulmonary Hypertension
Pulmonary Edema
Scleroderma
Septal Defect
Systemic Vasculitis
Third Degree Heart Block
Typical Atrial Flutter
Venous Compression
Venous Hypertension
Ventricular Septal Defect
Vitamin D Deficiency
Wolff-Parkinson-White Pattern
Arrhythmia Screening
Cardiac Catheterization (incl. Coronary Angiography)
Cardiac Imaging
Cardiac MRI (Magnetic Resonance Imaging) of Heart or Chest
Cardiovascular Diagnostic Test
Cardiovascular Stress Test
Cardioversion
Chest Pain Evaluation
Cholesterol Screening
Coronary Angiogram
Coronary Angioplasty, Atherectomy and Stent
Dobutamine Thallium Stress Test
HeartAware Online Risk Screening
Nuclear Stress Testing
Peripheral Arterial Disease Screening (PAD)
Pharmacologic Nuclear Stress Test
Stress Test
Structural Heart Disease Evaluations and Treatment
TCD Bubble Test
Thoracentesis
Tilt Table Testing
Treadmill Stress Test

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • Advantage Health Solutions
    Advantage Health Solutions HMO
  • Choice
  • Savings Plus of CA EPO
    Elect Choice (Open Access) EPO
    Deductible Plan CA Members Only HMO
    Select
    Aetna
    Open Choice
    Premier Care Network Plus - Innovation Health
    Managed Choice (Open Access) POS
    Choice Plus POS II
    Managed Choice (Open Access)
    Open Choice PPO
  • Pathway HMO
    Pathway EPO
    California Care Small Group HMO
    Anthem Blue Connection EPO
    Prudent Buyer Large Group CA PPO
    Prudent Buyer Small Group CA PPO
    California Care Large Group HMO
    Prudent Buyer Individual CA PPO
    Vivity CA HMO
  • Open Access Plus
    Cigna PPO
    Cigna
    Southern CA Select HMO
  • Pathway
  • Choice Care (Humana)
  • Choice POS
    Choice Care PPO
    National POS
  • CA Employer Group Plans HMO
    CA Healthnet PPO
  • National
  • Premium
  • Blue High Performance Network
  • First Health (Coventry Health Care)
    First Health (Coventry Health Care) PPO
  • Blue Card
    Blue Card High Performance Network HPN
    Blue Card PPO
  • Northern CA Cigna + Oscar LocalPlus EPO
    Northern CA Cigna + Oscar Open Access Plus EPO
  • Trio ACO
    Trio ACO HMO
    Local Access Plus HMO
    Access Plus Savenet HMO
    Bronze 60 SHOP PPO
    Access Plus Savenet
    Bronze Full 4500 PPO
    Platinum Access+ 25 HMO
    Platinum 90 PPO
    Silver 70 PPO
    Blue High Performance Network EPO
    Access Plus HMO
    Platinum Local Access + HMO 25 HMO
    Blue Shield of California
  • Curative PPO Plus
    Curative PPO
    Curative EPO
  • Select PPO
    Advantage Preferred DirectAccess Plus PPO
  • Options PPO
    Medica Choice
    Nexus Open Access
    SignatureValue - CA HMO
    Choice Plus
    Choice Plus POS
    Options

Locations

  1. 1 St. Joseph Heritage Orange - Cardiology
    1140 W La Veta Ave Ste 430, Orange, CA 92868
    Icon Directions Right Arrow Directions Phone Icon (714) 543-5555

Patient Satisfaction

Likelihood to recommend Dr. Johnston
3.4
Based on 13 Reviews
5 Stars (7)
4 Stars (1)
3 Stars (0)
2 Stars (0)
1 Star (5)

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Patient Reviews
Nov 08, 2022
Dr. Johnston listens to the patient first then discusses and explains. I have gone to him for 23 years… Nothing but positive experiences.
— Nov 08, 2022
See more reviews on Healthgrades
Photo: Dr. Warren Johnston, MD
How would you rate your experience with Dr. Warren Johnston, MD?
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Dr. Johnston's Office & Staff

  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. Johnston

  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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Telehealth Options
This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Johnston?
Call now to make an appointment
(714) 543-5555

About Me

Languages Spoken
Arabic
Languages Spoken
Specialties*
Cardiology
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.
Education

Education

Medical Education
  • University of Rochester
Medical Education

Board Certifications

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.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Johnston communicate via email?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Johnston offer telehealth services or virtual visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Johnston offer an online patient portal?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Johnston have free onsite parking?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Johnston offer weekend visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Johnston offer evening visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Johnston specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Johnston specialize in working with seniors?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Johnston specialize in couples therapy?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Johnston specialize in working with LGBTQ+ community?
No responses yet.
Yes
(0)
No
(0)
Does Dr. Johnston accept insurance?
No responses yet.
Yes
(0)
No
(0)

Frequently Asked Questions

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. Warren Johnston, MD. To arrange an appointment, call the number on Dr. Johnston's profile.

Dr. Johnston frequently treats the following conditions: Supraventricular Tachycardia, Atherosclerosis of Aorta and Rheumatic Tricuspid Disease. See more on Sharecare.

Dr. Warren Johnston, MD is affiliated with Providence St. Joseph Hospital Orange.

Yes, Dr. Warren Johnston, MD holds board certification in Cardiovascular Disease and Internal Medicine.

Hospital Affiliations

  • Providence St. Joseph Hospital Orange

    1100 W Stewart Dr, Orange, CA