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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.

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

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].

Information sourced from the clinic's website as of July 11, 2026.

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