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About

Cardiovascular Institute of the South (CIS) operates 21 cardiovascular offices in Louisiana and Mississippi, offering comprehensive heart and vascular care from prevention to treatment, including interventional procedures, electrophysiology, lipid management, and telemedicine. While CIS is headquartered in Houma, LA, and has a broad Louisiana presence, there is no specific New Iberia location listed among their known offices. For a cardiologist near New Iberia, CIS recommends visiting cardio.com or calling 1-800-425-2565 to locate the closest CIS clinic and book an appointment. If you’re seeking a Louisiana heart doctor affiliated with CIS in or near New Iberia, consider nearby CIS locations in Lafayette, Crowley, Morgan City, or Houma and inquire about telecardiology or local referred specialists.

Clinic Type

Cardiovascular / Cardiology

Address

500 North Lewis Street, Suite 100, New Iberia, Louisiana

Phone

3373675200

Email

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Cardiology
  • Interventional Cardiology
  • Vein treatments
  • Vascular diagnostics
  • Stress testing
  • Cardiac rhythm monitoring

Technology & Equipment

  • vascular lab
  • stress testing
  • cardiac rhythm monitoring
  • in-clinic vein treatments

Team

  • Marcus Cox, MD — Interventional Cardiologist
  • Kris Lindsay, MD — Cardiologist
  • Krishna Nagendran, MD — Interventional Cardiologist
  • Elvis Siripannho, MD — Cardiologist

Insurance & Payment

Languages Spoken

Photos

What Patients Say

Overall sentiment across review platforms: very positive

  • rater8: 4.9 out of 5.0 (for CIS New Iberia location) (Over 300 ratings (specifically for New Iberia location))
  • Vitals (Dr. Marcus Cox): 5.0 out of 5.0
  • Vitals (Dr. John K. Lindsay): 5.0 out of 5.0

Patients praise

  • Professional and knowledgeable staff
  • Compassionate and caring approach
  • Thorough explanations of medical conditions and plans
  • Good bedside manner
  • Friendly office atmosphere

Common complaints

  • Minimal negative feedback reported in reviews

"Doc is great. Takes time to explain everything on your visit. Very satisfied."

Patient review of Dr. Marcus Cox (rater8)

"Love the drs there. Nurses are friendly also make you feel welcome dr Lyndsey is my Dr he is amazing. Dr Butachi was my dr he saved my life 2 times I love and miss him"

Patient review (WebMD)

"Dr. Reed listened to my concerns with much professionalism compassion and patient . She addressed my issues and I am feeling assured of my treatment . I was very happy with her ."

Patient review of Joni Reed, NP (rater8)

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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