Cardiac Clinic

Cardiology • Orlando, FL • Since 1982 • Multiple locations including Kissimmee and satellite offices locations

About

Cardiac Clinic is a cardiology practice in Kissimmee, Florida with eight board-certified physicians specializing in internal medicine and cardiovascular diseases. The clinic offers comprehensive cardiology services including interventional cardiology, electrophysiology, cardiac imaging, and peripheral vascular interventions, with office-based and hospital-based services available at multiple locations.

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Clinic Type

Cardiology

Address

311 West Oak St, Kissimmee, FL 34741

Phone

407-933-1423

Email

—

Opening Hours

Monday – Friday 9:00 – 5:00 pm; Saturday Closed; Sunday Closed

Website

https://cardiacclinickiss.com/

Emergency Care

Not specified

Services Offered

Cardiology
Internal Medicine
Cardiovascular Diseases
Diagnostic Testing
Office-based services
Hospital-based services
Telemedicine (if mentioned)

Technology & Equipment

Office-based diagnostic testing
Hospital facilities nearby
Insurance processing
CareCloud/guest payment integration (as seen in payment link)

Team

Dianne Zullow, MD? (physician page listed) — Physician
Sunil Kakkar, MD? (physician page listed) — Physician
Atul Madan, MD? (physician page listed) — Physician
Padma Raju, MD? (physician page listed) — Physician
Saqib Gowani, MD? (physician page listed) — Physician
Sunil Kumar, MD? (physician page listed) — Physician
Manoj Agrawal, MD? (physician page listed) — Physician
Khurram Moin, MD? (physician page listed) — Physician

Insurance & Payment

We accept most public and private insurance plans.
most public and private insurance plans

We accept most major insurances and will file claims with those accepted by our office.

Cash, Credit/Debit, Insurance, credit/debit (payment processing available)

Languages Spoken

English

Pricing

Most procedures with cash-pay pricing available
Referral required for insurance processing (implied)

Current Offers

New patient welcome

FAQs

Do you accept new patients?

We are currently accepting new patients at all our locations.

What should I bring to my appointment?

Please bring your insurance card and ID.

We typically have same-day appointment availability. How can I schedule?

For scheduling call 407-933-1423 Opt.1.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

Birdeye (AdventHealth Medical Group Cardiology): 3.1 out of 5 stars (38 reviews)
Birdeye (The Cardiovascular Center of Florida): 4.9 out of 5 stars (1,233 reviews)
rater8 (Dr. Roland A. Filart): 4.9 out of 5 stars (449 ratings)
Birdeye (Orlando Health Heart Institute): 4.8 out of 5 stars (6,211 reviews)
rater8 (Dr. Sushma Koneru): 4.9 out of 5 stars (462 ratings)
Birdeye (Florida Cardiology, PA): 4.6 out of 5 stars (89 reviews)

Patients praise

doctors are generally described as knowledgeable, thorough, and compassionate
patients appreciate effective and life-saving treatments
professional and attentive clinical care team members
patients feel heard and respected during consultations

Common complaints

long wait times for appointments
difficulties with administrative tasks such as scheduling and communication
unresponsive office staff or difficulty receiving callbacks
concerns regarding professional ethics of front-desk personnel at certain locations

"The doctor is excellent and very knowledgeable. However, the scheduling process needs improvement. Patients are asked to arrive 15 minutes early, yet appointments often run an hour late."

— Birdeye (AdventHealth Medical Group Cardiology at Orlando)

"Staff and doctor were great. The 1 1/4 hour wait time was not."

— rater8 (Dr. Roland A. Filart)

"Waiting over a week for a member of the care team to return my calls... Have left numerous messages and gotten false promises of callbacks."

— Birdeye (Orlando Health Heart Institute)

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

In the News

St. Cloud Hospital launches new cardiac cath lab | Osceola News Gazette — Jul 7, 2026
Orlando Health – Health Central Hospital expands patient care with new cardiac catheterization lab — May 26, 2026

Information sourced from the clinic's website as of July 11, 2026. Own this clinic? Claim or correct this listing.