WJ
44 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Johnston, Cardiologist in Orange, CA?
Dr. Warren Johnston, MD is a Cardiologist, who primarily practices in Orange, CA with 2 additional practice locations. He has been practicing for over 44 years. Dr. Johnston is fluent in English and Spanish, and is currently seeing new patients. Dr. Johnston’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Johnston’s office at (714) 543-5555.
What languages does Dr. Johnston speak?
Dr. Johnston and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Johnston treat?
As a Cardiologist, Dr. Johnston 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. Johnston. 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:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Hardening of the Aorta
- Atherosclerosis
- Aortic artery hardening
- Aortic plaque buildup
- Aortic calcification
ICD-10 Codes:
- I700: Atherosclerosis of aorta
Also known as:
- Heart Palpitations
- Atrial Fibrillation
- Premature Ventricular Contractions
- Arrhythmia
- Skipped Heartbeat
- Fluttering Heart
- Pounding Heart
- Afib
- A-fib
- Irregular heart rhythm
- PVCs
- Ventricular Ectopic Beats
- Skipped Heartbeat (Ventricular)
ICD-10 Codes:
- R002: Palpitations
- I480: Paroxysmal atrial fibrillation
- I493: Ventricular premature depolarization
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 Cholesterol
- Cholesterol
- Triglycerides
- Hyperlipidemia
- High lipids
- Dyslipidemia
ICD-10 Codes:
- E785: Hyperlipidemia, unspecified
Which procedures does Dr. Johnston perform as a Cardiologist?
As a Cardiologist, procedures performed by Dr. Warren Johnston 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. Johnston's office.
Does Dr. Johnston accept my insurance?
Dr. Johnston accepts most major insurance plans. Important: Please call our office at (714) 543-5555 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Johnston accept in Orange, CA?
Dr. Johnston in Orange, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
CalOptima
Centene
Crown Cork and Seal Company
CVS Health (formerly Aetna)
Humana
Medicare
St. Joseph Health System (CA)
State of Tennessee
UnitedHealthcare
View All Insurances
Where is Dr. Johnston's office located?
Dr. Warren Johnston's Primary Practice
1140 W La Veta Ave Ste 430
Orange, CA 92868
(714) 543-5555
What is Dr. Johnston's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Johnston's National Provider Identifier (NPI) number is 1427052802.
What common questions do patients ask about Dr. Johnston?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Johnston
What is Dr. Warren Johnston's specialty?
Dr. Johnston is a Cardiologist near Orange, CA. 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. Johnston to book an appointment today.
Is this Dr. Warren Johnston affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Johnston is affiliated with Providence Mission Hospital Mission Viejo, Providence St. Jude Medical Center, Hoag Hospital Newport Beach 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 Warren Johnston accepting new patients in Orange, CA?
Yes, Dr. Warren Johnston is accepting new patients at this time.
Does Dr. Warren Johnston offer online booking?
Please contact Dr. Johnston's office at (714) 543-5555 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Warren Johnston?
Please contact Dr. Johnston's office at (714) 543-5555 for information regarding telehealth appointment availability or for scheduling assistance.
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