Skip to content

Physician Directory

Find a Doctor

Dr. Margaret M. Sullivan, MD

Cardiovascular Disease

Dr. Sullivan's Overview

Dr. Margaret M. Sullivan graduated from the University of Texas Medical School at San Antonio in 2004. She works in Ennis, TX and specializes in Cardiovascular Disease. Dr. Sullivan is affiliated with Ennis Regional Medical Center.

Dr. Sullivan's Experience

Years in Practice: 11

Dr. Sullivan's Specialties

Cardiovascular Disease

Dr. Sullivan's Education & Training

Medical School: University of Texas Medical School at San Antonio; Graduated 2004

Dr. Sullivan's Rating

Rate This Doctor

Overall Rating


  • Explains conditions & treatments
  • Takes time to answer my questions
  • Provides follow-up as needed
  • View All Ratings

Dr. Sullivan's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO
  • BCBS TX BlueChoice
  • CIGNA Open Access Plus
  • First Health PPO
  • View More

Dr. Sullivan's Office Information & Appointments

Office Locations

Ellis County Medical Assocs
Ellis County Medical Associates

802 W Lampasas St
Ennis, TX 75119
(972) 875-4700


Office Hours and Information

Fax: (972) 878-4527

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 7:00 AM - 6:30 PM
Tuesday 7:00 AM - 6:30 PM
Wednesday 7:00 AM - 6:30 PM
Thursday 7:00 AM - 6:30 PM
Friday 7:00 AM - 6:30 PM
Saturday Closed
Sunday Closed

Other Physicians in Dr. Sullivan's Practice

Dr. Sullivan's Hospital Affiliations

Office Locations

Other Cardiologists Near Ennis, TX

View More Cardiologists