Harold E Quan

Cardiovascular Disease Internal Medicine

Internal Medicine

(661) 255-8321Newhall, CA
Telehealth Available
NPI Active per CMS — Q2 2026

With over 54 years in internal medicine, Harold Quan is a long-established cardiologist in Newhall. He has been practicing since 2006 — over 54 years. Cardiologists specialize in diagnosing and treating heart and blood vessel conditions including coronary artery disease, and more.

1 of 805 Internal Medicine providers in CASee all Internal Medicine in Newhall54+ years experienceNPI since 2006

Data updated 2014-02-03 on CMS NPPES

Contact & Location

Practice Location

23928 Lyons Ave Suite 101, Newhall, CA 91321-2409

Fax: (661) 255-0338

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Internal MedicineCardiovascular Disease in NewhallAllopathic & Osteopathic Physicians

Cardiologists specialize in diagnosing and treating heart and blood vessel conditions including coronary artery disease, heart failure, arrhythmias, valve disorders, and hypertension. They perform diagnostic procedures such as echocardiograms, stress tests, and cardiac catheterization.

Taxonomy: 207RC0000X

Virtual Cardiovascular Disease Care With Harold Quan

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Harold Quan for follow-ups, medication reviews, and ongoing care — no travel to Newhall required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.

Frequently Asked Questions

Common questions about Harold Quan

NPI records show Dr. Quan as active with telehealth listed in Newhall, CA. Note: NPI status alone doesn't confirm open availability — always call ahead. Phone: (661) 255-8321.

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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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