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Clinic Type

Cardiology

Address

19475 W North Ave Ste 305 Brookfield, WI 53045

Phone

(262) 785-7430

Email

careers@ascension.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

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Team

  • Judith M Riesch, Interventional Cardiology, Physician Assistant — PA-C
  • Pamela A Anderson — APNP
  • Mindyn A Heimsch, Interventional Cardiology, Physician Assistant — PA-C
  • Zhaowei Ai, Internal Medicine, Interventional Cardiology, Cardiology — MD
  • James R Troken, Internal Medicine, Cardiology — DO
  • David W Grambow, Interventional Cardiology, Cardiology — MD
  • Erik G Stilp, Cardiology — MD, FACC, RPVI

Insurance & Payment

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Languages Spoken

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Vitals/WebMD: Dr. Firas Ghanem: 4.7–5.0 stars (15–21 ratings) (15-21 ratings)
  • Healthgrades: Dr. Tejwant Singh: 4.7 stars (32 ratings) (32 ratings)
  • BirdEye/Google: Ascension Wisconsin Hospital Waukesha: 3.4 stars (31 reviews) (31 reviews)

Patients praise

  • Many individual cardiologists receive high patient ratings (e.g., 4.7–5.0 stars) for their clinical care and bedside manner
  • Some patients report positive, smooth, and effective experiences with hospital ER services and clinical staff

Common complaints

  • Significant patient frustration regarding medical billing errors and communication difficulties with Ascension customer service
  • Difficulty in resolving disputed charges without external intervention

"Dr. Ghanem is a wonderful caring doctor. He goes above and beyond in treating and diagnosing the patient."

— Vitals

"The staff at all levels were kind and caring as well as very skilled. Can not say enough good things about this facility."

— BirdEye (review)

"Most involved Medicare users or older adults, and all cited difficulties communicating with Ascension customer service regarding billing errors."

— Journal Sentinel (Public Investigator)

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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