Mountainside Medical Center

Cardiology • Hackensack, NJ

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About

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Clinic Type

Cardiology

Address

1 Bay Ave, Montclair, NJ 07042

Phone

973-873-7787

Email

ardentcustomerservice@ensemblehp.com

Opening Hours

Not published — contact the clinic to confirm hours.

Website

https://mountainsidemedicalcenter.com/services/cardiology/

Services Offered

cardiology
cardiac rehabilitation
diagnostic imaging
electrophysiology
cardiac catheterization
interventional cardiology
heart and vascular surgery
leadless pacemakers
pacemaker placement
stress tests
echocardiograms
calcium scoring/CT calcium scoring
arterial plaque assessment
vascular imaging

Technology & Equipment

CT calcium scoring
cardiac CT
electrocardiography (ECG)
vascular imaging
CT angiography
leadless pacemakers
pacemaker placement
TAVR
mitral clip
AFib ablation

Insurance & Payment

—

Languages Spoken

—

Social Media

Twitter Youtube Facebook Linkedin Instagram

Photos

What Patients Say

Overall sentiment across review platforms: positive

Hackensack Meridian Health provider pages, Healthgrades, Birdeye, RateMDs: Generally high ratings, often between 4.8 and 5.0 out of 5 across various providers in the network (Varies widely by provider, ranging from tens to hundreds of reviews per doctor)

Patients praise

High level of clinical expertise and knowledge among cardiologists
Strong bedside manner, compassion, and kindness in many patient-doctor interactions
Clear and thorough explanations of medical conditions and treatment plans
High degree of patient trust in their cardiologists' decision-making and care
Effective diagnostic and treatment outcomes

Common complaints

Long wait times in the office past appointment times
Issues with staff cooperation, responsiveness, and communication, including difficulties scheduling appointments
Inaccurate or mismatched appointment times via text messaging systems
Occasional reports of poor bedside manner or lack of compassion from some providers
Frustrations with billing departments and follow-up on test results

"I don't feel Dr. Kim is rushing through my appointment. He is prepared when he comes into the room, and answers all my questions. I am very happy to have him as my cardiologist."

— Patient review for Dr. Bernard Haksoo Kim

"Unfortunately, for years, the wait in the office past your appointment time, is way too long Better scheduling of appointments needs to take place. The patient's time is valuable as well."

— Patient review for Dr. Sunil Kumar Khanna

"The staff at the office have not been cooperative at all. I am going to get a procedure soon, but no one is calling me or answering back when I call them."

— Patient review for Dr. Jayendrakumar N Patel

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. Own this clinic? Claim or correct this listing.