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INTEGRIS Health Cardiovascular Physicians Duncan

4.9 out of 5 · 2,195 reviews

Cardiology • Duncan, OK • Since 1994

About

INTEGRIS Health is Oklahoma’s largest Oklahoma‑owned health system and a major private employer, offering a broad network of hospitals, clinics, and specialty services across the state. - Check INTEGRIS Health Duncan or INTEGRIS Heart & Vascular in nearby Oklahoma City or Enid for cardio services. - Use the INTEGRIS Health patient portal to schedule appointments, view records, and contact cardiology departments. - Contact INTEGRIS Duncan directly or visit the main INTEGRIS Health sites for the most accurate location, availability, and provider details.

Clinic Type

Cardiology

Address

1312 Harville Road Duncan, OK 73533

Phone

405-947-3341

Email

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Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Cardiology
  • Interventional Cardiology

Technology & Equipment

  • Interventional Cardiology
  • Cardiovascular care

Team

  • R. Casey Sullivan, M.D. — M.D.
  • Richard Lane, M.D. — M.D.
  • Zeeshan Khan, M.D. — M.D.
  • Ronald Woodson, M.D. — M.D.

Insurance & Payment

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Languages Spoken

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Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Birdeye (aggregated): 4.8 out of 5 stars (aggregated for Cardiovascular Physicians) (773 reviews)
  • INTEGRIS Health (individual provider): 4.9 out of 5 stars (individual providers) (2,195 ratings)

Patients praise

  • Physicians perceived as caring, thorough, and attentive
  • Staff praised for being helpful and responsive to questions
  • High overall satisfaction ratings for many individual providers within the network

Common complaints

  • Long wait times in emergency departments at various INTEGRIS locations
  • Concerns regarding billing, insurance processing, and financial transparency
  • Occasional reports of perceived dismissive or rude communication from staff

"My cardiologist, Dr Kastigher is a very caring man and is always very thorough. His staff is also the best. Always ready to answer questions and help you to feel better."

— Birdeye Review

"The doctor was very rude and condescending to me and family."

— Yelp Review of INTEGRIS brand

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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