Harold Quan, MD

Cardiology

20+ years in practiceNPI: 1033220256Licensed in CA

About

Bio coming soon.

Are you Harold Quan, MD?

Claim your profile

Verify your identity, update your credentials, and take ownership of your listing on PBCMMG.

Claim Profile

Credentials & Recognition

Specialties

Cardiology

NPI sub-specialties

Internal Medicine, Cardiovascular Disease207RC0000X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Google Reviews

2.9 / 5.0

7 reviews

Years in Practice

20+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#33

Top Cardiologists in California, 2026

Cardiology · California · 2026

Other Cardiology Doctors near California

View all →

Dr. Kevin Lee, MD

California, CA · Board cert · 20+ yrs

Dr. David Abrams, MD

California, CA · 21+ yrs

Dr. Edward Abrams, MD

California, CA · 21+ yrs

Dr. Roger Acheatel, MD

California, CA · 21+ yrs

Dr. Ramtin Agah, MD

California, CA · 21+ yrs

Dr. Joseph Ahdoot, MD

California, CA · 21+ yrs

Frequently Asked Questions about Dr. Harold Quan, MD

Where does Dr. Harold Quan, MD practice?+
Dr. Harold Quan, MD practices in California, CA. 23928 LYONS AVE SUITE 101 NEWHALL, CA 913212409.
What is Dr. Harold Quan, MD's phone number?+
Dr. Harold Quan, MD's practice phone is 661-255-8321. Office contact information is verified on the PBCMMG profile.
What does Dr. Harold Quan, MD specialize in?+
Dr. Harold Quan, MD's primary specialty is Cardiology.
Is Dr. Harold Quan, MD board certified?+
Board certification status for Dr. Harold Quan, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Harold Quan, MD been practicing?+
Dr. Harold Quan, MD has been in active practice for 20+ years, based on NPI enumeration and state licensing records.
What is Dr. Harold Quan, MD's NPI number?+
Dr. Harold Quan, MD's National Provider Identifier (NPI) is 1033220256, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

See an error? info@pbcmmg.com

Are you Harold Quan, MD?

Claim & complete your profile →

Verify identity, upload proof, and update credentials. Approval typically 1-2 business days.