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Southern California Heart Specialists

Cardiac CarePasadena, CA

★★★★★4.6/572 reviews across 2 platforms

Ratings by platform

  • Yelp: 4.5/5 stars (based on 60 reviews) (60 reviews)
  • Healthgrades: 5.0/5 stars (12 reviews (for Dr. Gregory Giesler specifically))
  • Facebook: 100% recommended (13 reviews)

What patients say

Patients praise

  • Highly skilled and knowledgeable physicians, particularly Dr. Giesler and Dr. Mauer
  • Thorough, attentive, and clear communication from doctors
  • Reassuring and professional bedside manner
  • Helpful and comforting staff in some patient experiences

Common complaints

  • Difficulty booking appointments, including long hold times and being disconnected
  • Long wait times for scheduled appointments
  • Instances of perceived rudeness or shaming by office staff
  • Strict cancellation policies resulting in missed appointments

In patients' words

"Dr. Geisler is amazing. It's been a year and a half since my two stents were installed. He is great on follw-up visits and takes time to listen and provide great perspective and expertise."

Yelp Review via MapQuest

"I have been trying to book an appointment for over two months. I am always put on hold and then randomly hung up on."

Patient Review

"He's friendly yet professional and very thorough. I appreciate the time he takes to explain everything and any additional questions I may have. He is very reassuring and his confidence gives me confidence."

Healthgrades Review for Dr. Giesler

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 10, 2026 — sources: [1][2][3][4][5][6][7].

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