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Clinic Type

Cardiology

Address

800 South Main Street, Corona, CA 92882

Phone

(951) 737-4343

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Emergency Care

Yes

Services Offered

  • Cardiology
  • Percutaneous coronary intervention (PCI)
  • balloon angioplasty
  • stent placement
  • catheterization laboratory
  • electrophysiology (EP) studies
  • pacemakers
  • implantable loop recorders
  • implantable cardioverter defibrillators
  • ablation
  • 3D mapping

Technology & Equipment

  • PCI
  • catheterization lab
  • 3D mapping
  • electrophysiology equipment

Team

  • William Suh, MD, board-certified interventional cardiologist — Medical Director of the Cardiology Department

Insurance & Payment

  • Accepted Health Plans
  • Health Insurance Marketplace

Online Bill Pay, Pay Your Bill, Your Hospital Bill, Billing and Insurance

Languages Spoken

  • English
  • Español

FAQs

What procedures are performed in the Cardiology Department?

Diagnostic cardiac catheterization, PCI, balloon angioplasty, stent placement, EP studies, pacemakers, loop recorders, ICDs, and ablation.

What cardiovascular services does Corona Regional Cardiology provide?

The Cardiology Department offers cardiovascular services and is approved/licensed as a PCI facility.

Who is the Medical Director of Cardiology at CRMC?

Dr. Suh is the Medical Director of the Cardiology Department at CRMC.

How can I find a doctor or request a referral?

Call the FREE Direct Doctors Plus physician referral service at 800-882-4362 or request a referral online.

Awards & Accreditations

  • Awards and Accreditations

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Healthgrades (Dr. Roberto Moscoso): 4.9 out of 5 stars (44 reviews) (44)
  • Healthgrades (Dr. Isaac Tsai): 3.8 out of 5 stars (4 reviews) (4)
  • Facebook (Inland Heart Doctors): 86% recommend (22 reviews)

Patients praise

  • High satisfaction with individual physicians' diagnostic skills and clinical care
  • Instances of staff going above and beyond to accommodate urgent requests
  • Clean and well-maintained facilities in certain practices
  • Timely communication of test results in specific cases

Common complaints

  • Administrative issues, such as poor communication and scheduling difficulties
  • Staff unprofessionalism or perceived incompetence
  • Long wait times for appointments and during visits
  • Frustration regarding billing, insurance, or out-of-pocket payment policies
  • Concerns regarding the physical environment and maintenance of some office facilities

"A absolutely fantastic cardiologist... in my opinion the best!"

Healthgrades Patient Review

"Dr. Tsai is a good Dr. but the staff is a mess. They call to confirm your appointment much to early and confuse my elderly mother and my self."

Healthgrades Patient Review

"Dr. Is good but the office/phone system is horrible... The waiting room has old, scuffed and ripped furniture repaired with duct tape."

Yelp Patient Review

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 10, 2026.

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