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Dr. Margaret Ontiveros, MD

Cardiology
2.0 (17)
Map Pin Small San Antonio, TX
Call for new patient details
19 years of experience

Offers telehealth

Overview of Dr. Margaret Ontiveros, MD

Dr. Margaret Ontiveros, MD is a Cardiology Specialist in San Antonio, TX. They specialize in Cardiology, has 19 years of experience, and is board certified in Cardiovascular Disease. They graduated from UNIVERSITY OF CALIFORNIA AT IRVINE / CALIFORNIA COLLEGE OF MEDICINE & SURGERY and is affiliated with Baptist Medical Center.

Dr. Ontiveros works at RiverCity CardioVascular in San Antonio, TX. They frequently treat conditions like Electrocardiogram (EKG), Limb Swelling Caused by Fluid Overload and Heart Disease along with other conditions at varying frequencies. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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Dr. Ontiveros' Office Locations

  1. 1
    Rivercity Cardiovascular of San Antonio Pllc
    311 Camden St Ste 102, San Antonio, TX 78215 Icon Directions Right Arrow Directions Phone Icon (210) 281-9800
  2. 2
    San Antonio Heart Associates P.A.
    1200 Brooklyn Ave Ste 120, San Antonio, TX 78212 Icon Directions Right Arrow Directions Phone Icon (210) 271-7266
  3. 3
    Progressive Pulmonary Associates Pa.
    7003 S New Braunfels Ave Ste 104, San Antonio, TX 78223 Icon Directions Right Arrow Directions Phone Icon (210) 281-9800

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Baptist Medical Center

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Electrocardiogram (EKG)
Limb Swelling Caused by Fluid Overload
Heart Disease
Electrocardiogram (EKG)
Limb Swelling Caused by Fluid Overload
Heart Disease

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Electrocardiogram (EKG) Chevron Icon
Limb Swelling Caused by Fluid Overload Chevron Icon
Heart Disease Chevron Icon
Aortic Stenosis Chevron Icon
Aortic Valve Disease Chevron Icon
Aortic Valve Regurgitation Chevron Icon
Arrhythmia Screening Chevron Icon
Arrhythmias Chevron Icon
Atrial Fibrillation Chevron Icon
Atrial Flutter Chevron Icon
Cardiac Imaging Chevron Icon
Cardiac Myocardial Perfusion Imaging Chevron Icon
Cardiovascular Diagnostic Test Chevron Icon
Cardiovascular Stress Test Chevron Icon
Carotid Artery Disease Chevron Icon
Chest Pain Chevron Icon
Chest Pain Evaluation Chevron Icon
Cholesterol Screening Chevron Icon
Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension) Chevron Icon
Congenital Heart Defects Chevron Icon
Congestive Heart Failure Chevron Icon
Coronary Angiogram Chevron Icon
Coronary Artery Disease (CAD) Chevron Icon
Dobutamine Thallium Stress Test Chevron Icon
Echocardiography Chevron Icon
Endocarditis Chevron Icon
Heart Murmur Chevron Icon
Heart Palpitations Chevron Icon
HeartAware Online Risk Screening Chevron Icon
Hyperlipidemia Chevron Icon
Hypertension Chevron Icon
Hypotension Chevron Icon
Mitral Valve Disease Chevron Icon
Mitral Valve Regurgitation Chevron Icon
Mitral Valve Stenosis Chevron Icon
Nuclear Stress Testing Chevron Icon
Pericardial Disease Chevron Icon
Pericarditis Chevron Icon
Peripheral Arterial Disease Screening (PAD) Chevron Icon
Pharmacologic Nuclear Stress Test Chevron Icon
Pharmacologic Stress Test, Adenosine Chevron Icon
Primary Pulmonary Hypertension Chevron Icon
Pulmonary Hypertension Chevron Icon
Sick Sinus Syndrome Chevron Icon
Sinus Bradycardia Chevron Icon
Sinus Tachycardia Chevron Icon
Stress Test Chevron Icon
Structural Heart Disease Evaluations and Treatment Chevron Icon
Syncope Chevron Icon
  • View other providers who treat Syncope
TCD Bubble Test Chevron Icon
Third Degree Heart Block Chevron Icon
Tilt Table Testing Chevron Icon
Tilt Testing or Cardiac Event Monitors Chevron Icon
Treadmill Stress Test Chevron Icon
Tricuspid Valve Disease Chevron Icon
Aneurysm Chevron Icon
  • View other providers who treat Aneurysm
Aneurysm of Heart Chevron Icon
Angina Chevron Icon
  • View other providers who treat Angina
Angina and Acute Coronary Syndrome Chevron Icon
Aortic Aneurysm Chevron Icon
Aortic Ectasia Chevron Icon
Atrial Septal Defect Chevron Icon
Cardiac Catheterization (incl. Coronary Angiography) Chevron Icon
Cardiac MRI (Magnetic Resonance Imaging) of Heart or Chest Chevron Icon
Cardiomegaly Chevron Icon
Cardiomyopathy Chevron Icon
Cardiomyopathy, Dilated Chevron Icon
Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair Chevron Icon
Chest CT (incl. Heart and Lungs) Chevron Icon
Congenital Aortic Valve Disorders Chevron Icon
Congenital Heart Disease Chevron Icon
Coronary Artery Aneurysm Chevron Icon
Hypertensive Heart and Chronic Kidney Disease Chevron Icon
Hypertensive Heart Disease Chevron Icon
Mitral Valve Prolapse Chevron Icon
Mobitz, Type 2, Heart Block Chevron Icon
Pacemaker Insertion or Replacement Chevron Icon
Patent Foramen Ovale (PFO) Chevron Icon
Rheumatic Aortic Valve Disorders Chevron Icon
Second Degree Heart Block Chevron Icon
Septal Defect Chevron Icon
Supraventricular Tachycardia Chevron Icon
Ventricular Septal Defect Chevron Icon
Ventricular Tachycardia (VT) Chevron Icon
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    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

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    2.0
    Average provider rating
    Based on 17 ratings
    Patient Ratings (17)
    5 Star
    (4)
    4 Star
    (0)
    3 Star
    (0)
    2 Star
    (1)
    1 Star
    (12)
    Leave a review

    How was your appointment with Dr. Ontiveros?

    Oct 15, 2022
    Father in law was referred due to an irregular heart beat. Dr. Ontiveros was very polite and attentive to his medical history and questions.
    — Oct 15, 2022
    Read more reviews on Healthgrades
    Photo: Dr. Margaret Ontiveros, MD
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    • Likelihood of recommending Dr. Ontiveros to family and friends

    Dr. Ontiveros' Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Ontiveros

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Spends appropriate amount of time with patients

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    About Dr. Margaret Ontiveros, MD

    Specialties
    • Cardiology
    Specialties
    Years of Experience
    • 19 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.
    Languages Spoken
    • English, Spanish
    Languages Spoken
    NPI Number
    • 1346310968
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Medical Education
    • UNIVERSITY OF CALIFORNIA AT IRVINE / CALIFORNIA COLLEGE OF MEDICINE & SURGERY
    Medical Education
    Board Certifications
    • Cardiovascular Disease
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. Ontiveros has an average wait time of 31 – 45 minutes at their office(s).

    Dr. Ontiveros has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Ontiveros works at RiverCity CardioVascular in San Antonio, TX. View the full address on Dr. Ontiveros’s profile.

    Dr. Ontiveros has seen patients for Electrocardiogram (EKG), Limb Swelling Caused by Fluid Overload and Heart Disease, and more. You can see other conditions treated by Dr. Ontiveros on their profile. Please call the provider’s office to confirm all visit reasons.

    17 patients have reviewed Dr. Ontiveros. The overall rating for this provider is 2.0. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Ontiveros.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Ontiveros, there are benefits to both methods. A person calling to schedule an with Dr. Ontiveros appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

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