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Clinic Type

Cardiology

Address

1425 S Main St, Medical Office Building, 1st Floor, Walnut Creek, CA 94596

Phone

925-295-4050

Email

Opening Hours

Monday through Friday, 8:30 a.m. to 5 p.m.

Emergency Care

For emergencies call 911 (not specified in document); general assistance numbers provided (1-800-464-4000, TTY 711)

Services Offered

  • Cardiology

Insurance & Payment

Information updated periodically; provider directory hard copy available by request (see Medicare/Medi-Cal notes)

Languages Spoken

FAQs

The information in this online directory is updated periodically. The availability of physicians, hospitals, providers, and services may change.

Information about a practitioner is provided to us by the practitioner or is obtained as part of the credentialing process. If you have questions, please call us at 1-800-464-4000 (toll free). For the hearing and speech impaired: 1-800-464-4000 (toll free) or TTY 711(toll free). You can also call the Medical Board of California at 916-263-2382, or visit.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • U.S. News & World Report (Cardiologists): 5 out of 5 (13 reviews)
  • Healthgrades (Hospital): 68% (Not explicitly stated)
  • Healthgrades (Dr. John Krouse, Cardiologist): 2.5 out of 5 (6 reviews)
  • WebMD (Dr. Sushil Karmarkar, Cardiologist): 2 out of 5 (1 review)

Patients praise

  • Professional and friendly staff members (nurses and physicians)
  • Coordinated care within a single system
  • Availability of diverse communication methods like e-visits and phone consultations
  • Some physicians noted for being compassionate and informative

Common complaints

  • Long wait times in emergency and intake areas
  • Concerns regarding billing practices and surprise charges
  • Occasional reports of unprofessional or dismissive doctor behavior
  • Challenges with parking access

"Dr. Shiu is a very compassionate and caring doctor. He really listens to his patients..."

Vitals.com review

"Doctor Krouse was being very ruled and unprofessional... His unprofessional behavior put extra stress on his parents."

Healthgrades review

"Between the extreme wait times, doctors who don’t take patients seriously, unnecessary procedures, and constant surprise bills, this has been one of the worst healthcare experiences of my life."

LocalityBiz review

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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