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Clinic Type

Cardiology

Address

Phone

1-800-675-6368

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Emergency Care

24-hour nurse line for assistance (free)

Services Offered

  • cardiology
  • cardiac imaging
  • diagnostic testing
  • electrophysiology
  • cardiac rehabilitation
  • emergency services
  • complex and minimally invasive surgeries
  • wellness and prevention
  • medical cardiology

Team

  • Physicians and advanced practice providers — Care team for heart conditions

Insurance & Payment

Languages Spoken

FAQs

Do I need a referral for an appointment?

If your insurance plan requires a referral, obtain authorization from your primary care provider. A referral may be needed to avoid rescheduling.

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Riverside Online (Press Ganey): 4.8 out of 5 stars (316 ratings)
  • US News & World Report (Riverside Regional Medical Center Cardiology): 4 out of 5 stars (53 reviews)
  • WebMD (Dr. James O'Brien): 5.0 out of 5 stars (1 rating)

Patients praise

  • Patients report providers explain conditions and treatments well.
  • Patients report providers answer questions thoroughly.
  • High overall satisfaction scores reported by individual providers on official health system platforms (e.g., 4.8/5 for Dr. James O'Brien).

Common complaints

  • Very limited specific public complaints or negative feedback found for the practice as a whole or individual providers in available aggregators.

"Patients praised Dr. O'Brien for explaining conditions and treatments, answering questions, providing follow-up as needed, and giving thorough exams."

WebMD Patient Feedback

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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