HQ
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Quan, Cardiologist in Newhall, CA?
Dr. Harold Quan is a Cardiologist, who primarily practices in Newhall, CA with 1 additional practice location. He is board certified by the American Board of Internal Medicine. Dr. Quan completed his residency at Univ Louisville Sch Of Med, Internal Medicine; Allegheny Gen Hosp, Internal Medicine. Dr. Quan is fluent in English and French, and is currently seeing new patients. Dr. Quan’s practice accepts Cigna, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Quan’s office at (661) 255-8320.
Where did Dr. Quan go to medical school and complete their residency?
Residency: Univ Louisville Sch Of Med, Internal Medicine; Allegheny Gen Hosp, Internal Medicine
Medical School: University Libre De Bruxelles- Fac De Med Et De Pharm- Bruxelles | University Of Brussels, Faculty Of Medicine and Pharmacy
Is Dr. Quan board certified in Cardiologist?
Yes, Dr. Harold Quan is board certified by the American Board of Internal Medicine
What languages does Dr. Quan speak?
Dr. Quan and their clinical team can communicate with patients in the following languages:
English
French
What conditions does Dr. Quan treat?
As a Cardiologist, Dr. Quan 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. Quan. 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:
- Abnormal EKG
- Heart Health Tests
- Irregular Electrocardiogram
- Unusual Heart Rhythm Test
- ECG Abnormalities
ICD-10 Codes:
- R9431: Abnormal electrocardiogram [ECG] [EKG]
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Premature Ventricular Contractions
- Heart Palpitations
- Fast Heartbeat
- Slow Heart Rate
- Other Heart Rhythm Disorder
- Premature Atrial Contractions
- Arrhythmia
- PVCs
- Ventricular Ectopic Beats
- Skipped Heartbeat (Ventricular)
- Skipped Heartbeat
- Fluttering Heart
- Pounding Heart
- Tachycardia
- Rapid heart rate
- Racing heart
- Bradycardia
- Slow Pulse
- Low Heart Rate
- Cardiac Dysrhythmia
- Irregular Heartbeat
- Heart Rhythm Problems
- PACs
- Atrial Ectopic Beats
- Skipped Heartbeat (Atrial)
ICD-10 Codes:
- I493: Ventricular premature depolarization
- R002: Palpitations
- R000: Tachycardia, unspecified
- R001: Bradycardia, unspecified
- I498: Other specified cardiac arrhythmias
- I491: Atrial premature depolarization
Also known as:
- Chest Pain
- Precordial pain
- Chest discomfort
- Thoracic pain
ICD-10 Codes:
- R072: Precordial pain
Also known as:
- Mixed High Cholesterol and Triglycerides
- Cholesterol
- Triglycerides
- Mixed hyperlipidemia
- Combined hyperlipidemia
- High lipids
ICD-10 Codes:
- E782: Mixed hyperlipidemia
Also known as:
- Permanent Atrial Fibrillation
- Atrial Fibrillation
- Irreversible AFib
- Fixed Atrial Fibrillation
- Long-term AFib
ICD-10 Codes:
- I4821: Permanent atrial fibrillation
Also known as:
- Shortness of Breath
- Breathing Problems
- Difficulty breathing
- Breathlessness
- Dyspnea
ICD-10 Codes:
- R0602: Shortness of breath
Also known as:
- Prediabetes
- Insulin Resistance & Prediabetes
- Borderline diabetes
- Insulin resistance
- High blood sugar (not yet diabetes)
ICD-10 Codes:
- R7303: Prediabetes
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:
- Type 2 Diabetes with High Blood Sugar
- Diabetes Type 2
- Hyperglycemia
- Type 2 diabetes
- Diabetic Hyperglycemia
- High Blood Glucose
- High Sugar Levels
ICD-10 Codes:
- E1165: Type 2 diabetes mellitus with hyperglycemia
Also known as:
- High Cholesterol
- Cholesterol
- Hypercholesterolemia
- High blood cholesterol
- Elevated cholesterol
ICD-10 Codes:
- E7800: Pure hypercholesterolemia, unspecified
Also known as:
- Chronic Kidney Disease from High Blood Pressure
- Chronic Kidney Disease
- High Blood Pressure
- Hypertensive Chronic Kidney Disease
- High Blood Pressure Kidney Disease
- Hypertension-Related Kidney Disease
ICD-10 Codes:
- I129: Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
Also known as:
- Vitamin D Deficiency
- Low Vitamin D Levels
- Lack of Vitamin D
- Hypovitaminosis D
ICD-10 Codes:
- E559: Vitamin D deficiency, unspecified
Also known as:
- Severe Obesity
- Obesity
- Helping Your Child Who Is Overweight
- Take Charge of Your Health: A Guide for Teenagers
- Understanding Adult Overweight & Obesity
- Morbid Obesity
- Extreme Obesity
- Class 3 Obesity
ICD-10 Codes:
- E6601: Morbid (severe) obesity due to excess calories
Also known as:
- Localized Swelling
- Edema
- Localized Edema
- Fluid Retention
- Swelling in one area
ICD-10 Codes:
- R600: Localized edema
Which procedures does Dr. Quan perform as a Cardiologist?
As a Cardiologist, procedures performed by a Dr. Harold Quan 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. Quan's office.
Does Dr. Quan accept my insurance?
Dr. Quan accepts most major insurance plans. Important: Please call our office at (661) 255-8320 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Quan accept in Newhall, CA?
Dr. Quan in Newhall, 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
Apex Healthcare
Blue Shield of California
Centene
CVS Health (formerly Aetna)
Directors Guild of America Employees
Elevance Health Inc. (formerly Anthem)
Medicaid
Medicare
UnitedHealthcare
View All Insurances
Where is Dr. Quan's office located?
Dr. Harold Quan's Primary Practice
23928 Lyons Ave Ste 101
Newhall, CA 91321
(661) 255-8320
What is Dr. Quan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Quan's National Provider Identifier (NPI) number is 1033220256.
What common questions do patients ask about Dr. Quan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Quan
What is Dr. Harold Quan's specialty?
Dr. Quan is a Cardiologist near Newhall, 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. Quan to book an appointment today.
Is this Dr. Harold Quan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Quan is affiliated with Henry Mayo Newhall Hospital which is a Castle Connolly Top Hospital. 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 Harold Quan accepting new patients in Newhall, CA?
Yes, Dr. Harold Quan is accepting new patients at this time.
Does Dr. Harold Quan offer online booking?
Please contact Dr. Quan's office at (661) 255-8320 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Harold Quan?
Please contact Dr. Quan's office at (661) 255-8320 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Harold Quan have?
Dr. Harold Quan is certified by the American Board of Internal Medicine.
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