WJ
44 Years of Experience
Accepting patients
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 and is board certified. 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:
- Heart Palpitations
- Atrial Fibrillation
- Premature Ventricular Contractions
- Supraventricular Tachycardia
- Arrhythmia
- Skipped Heartbeat
- Fluttering Heart
- Pounding Heart
- Afib
- A-fib
- Irregular heart rhythm
- PVCs
- Ventricular Ectopic Beats
- Skipped Heartbeat (Ventricular)
- SVT
- Fast heart rate
- Rapid heartbeat
ICD-10 Codes:
- R002: Palpitations
- I480: Paroxysmal atrial fibrillation
- I493: Ventricular premature depolarization
- I4891: Unspecified atrial fibrillation
- I4710: Supraventricular tachycardia, 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 Aorta
- Atherosclerosis
- Aortic artery hardening
- Aortic plaque buildup
- Aortic calcification
ICD-10 Codes:
- I700: Atherosclerosis of aorta
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
Also known as:
- Type 2 Diabetes with Other Circulation Problems
- Diabetes Complicationss
- Diabetes Type 2
- Type 2 diabetes
- Diabetic Vascular Complications
- Diabetes Heart and Blood Vessel Problems
- Diabetes Mellitus Circulatory Issues
- Diabetes Mellitus Complications
- Diabetes Related Health Problems
- Advanced Diabetes
ICD-10 Codes:
- E1159: Type 2 diabetes mellitus with other circulatory complications
- E1169: Type 2 diabetes mellitus with other specified complication
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:
- 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
Also known as:
- Chest Pain
- Chest discomfort
- Thoracic pain
- Upper body pain
ICD-10 Codes:
- R079: Chest pain, unspecified
Also known as:
- Fainting
- Syncope
- Passing out
- Collapse
ICD-10 Codes:
- R55: Syncope and collapse
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:
- Chest Pain
- Chest discomfort
- Thoracic pain
- Pectoral pain
ICD-10 Codes:
- R0789: Other chest pain
Also known as:
- Rheumatic Tricuspid Valve Leak
- Heart Valve Disease
- Streptococcal Infection
- Rheumatic Tricuspid Regurgitation
- Leaky Tricuspid Valve
- Tricuspid Valve Rheumatic Disease
ICD-10 Codes:
- I071: Rheumatic tricuspid insufficiency
Also known as:
- Cardiomyopathy
- Heart Muscle Disease
- Enlarged Heart
ICD-10 Codes:
- I429: Cardiomyopathy, unspecified
Also known as:
- Shortness of Breath
- Breathing Problems
- Difficulty breathing
- Breathlessness
- Dyspnea
ICD-10 Codes:
- R0602: Shortness of breath
Which procedures does Dr. Johnston perform as a Cardiologist?
As a Cardiologist, procedures performed by a 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
CVS Health (formerly Aetna)
Humana
Medicaid
Medicare
Scan Health Plan
St. Joseph Health System (CA)
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?
No, Johnston is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Providence St. Joseph Hospital Orange. Castle Connolly Top Hospitals 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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