> > > > Dr. Margaret Sullivan, MD
Dr. Margaret Mary Sullivan MD is a female Internist, has 6 years of experience and practices in Internal Medicine, Cardiovascular Disease, and Cardiology.
Dr. Margaret Sullivan has 1 office location.
Margaret A Shaw
802 W Lampasas St
Ennis, TX 75119

Phone Number
Locations and availability (1)
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Margaret Sullivan:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

  • Currently 4 of 4 stars
Patient comments (2)

The overall average patient rating of Dr. Margaret Sullivan is Excellent. Dr. Sullivan has been reviewed by 3 patients who have provided 2 comments. The rating is 4 out of 4 stars.

Patient Ratings
Ease of Appointment 4.0
  • Currently 4 of 4 stars
Promptness 4.0
  • Currently 4 of 4 stars
Courteous Staff 4.0
  • Currently 4 of 4 stars
Accurate Diagnosis 4.0
  • Currently 4 of 4 stars
Bedside Manner 4.0
  • Currently 4 of 4 stars
Spends Time with Me 4.0
  • Currently 4 of 4 stars
Follows Up After Visit 4.0
  • Currently 4 of 4 stars

Specialties & Research

Dr. Margaret Sullivan, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • She has special expertise in 5 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Unstable Angina

Education & Awards

Dr. Sullivan graduated from The University of Texas at Houston.


Dr. Sullivan has 1 hospital affiliations:

  • Ennis Regional Medical Center 

Accepted Insurance Plans

Dr. Sullivan accepts these health insurances in at least one office:

  • Unicare - 11 plans
  • Humana - 14 plans
  • Cigna - 6 plans
  • Aetna - 3 plans

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Additional Information
Where does Dr. Margaret M. Sullivan practice?
Dr. Margaret Sullivan practices Internal Medicine, Cardiovascular Disease, and Cardiology near Ennis, TX.
See Ennis Internists and Ennis Cardiologists.