Summary

Dr. William Ocallaghan is a cardiovascular disease specialist with nearly five decades of experience caring for patients with heart conditions. He earned his medical degree from University College Dublin School of Medicine and Medical Science, bringing international training to his practice in South Texas. Dr. Ocallaghan speaks both English and Spanish, helping him connect with patients throughout the diverse Rio Grande Valley community.

Dr. Ocallaghan practices at multiple locations across the region, including Rio Grande Regional Hospital and Heart Institute Renaissance in McAllen, along with Knapp Medical Center in Weslaco and Mission Regional Medical Center in Mission. His extensive experience allows him to provide comprehensive cardiovascular care to patients throughout South Texas. Patients have given him an average rating of 3.0 on Vitals, and he continues to serve the community with his bilingual skills and decades of specialized heart care expertise.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3
  • 49 years of experience
  • speaks English, Spanish
  • University College Dublin School Of Medicine And Medical Science
  • 1 written review
  • 1 specialty
  • 13 areas of expertise
  • 1 hospital affiliation
  • 4 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. William Gerard Ocallaghan has 4 locations

Heart Institute Renaissance

100 E Ridge Rd Ste AMcAllen, TX 78503
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Rio Grande Regional Hospital

101 E Ridge RdMcallen, TX 78503

Knapp Medical Center

1401 E 8th StWeslaco, TX 78596

Mission Regional Medical Center

900 S Bryan RdMission, TX 78572

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Dr. William Gerard Ocallaghan, MD
Dr. Pedro Mego, MD
Dr. Francia Rojas, MD
Dr. Vijaiganesh Nagarajan, MD
Dr. William Gerard Ocallaghan, MDDr. Pedro Mego, MDDr. Francia Rojas, MDDr. Vijaiganesh Nagarajan, MD
Cardiovascular DiseaseCardiovascular DiseaseCardiovascular DiseaseCardiovascular Disease
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.4 
3.7 
49 Years of Experience 30 Years of Experience
No Virtual Visit Option No Virtual Visit Option Virtual Visit Available Virtual Visit Available
Speaks English, Spanish Speaks English, Spanish Speaks English, Spanish Speaks English
McAllen , TXMission , TXHouston , TXKaty , TX
Med School: University College Dublin School Of Medicine And Medical Science Med School: Universidad Nacional Mayor De San Marcos Facultad De Medicina San Fernando
Current Profile
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Insurance Plans Accepted by Dr. William Gerard Ocallaghan

  • Accepts Medicaid

Medical Specialties

Dr. William Gerard Ocallaghan has the following specialty

Specialty Expertise

Dr. William Gerard Ocallaghan has the following 13 areas of expertise

  • Acute Coronary Syndrome (ACS)
  • Arrhythmia
  • Atherosclerosis
  • Blood Clot
  • Heart Attack
  • Heart Block
  • Heart Diseases
  • Heart Failure
  • High Cholesterol
  • High Cholesterol (Hypercholesterolemia)
  • Hypertension
  • Stroke
  • Unstable Angina

Certifications, License, & Education

49 Years Experience

Education & Training

Medical School

Graduated from University College Dublin School Of Medicine And Medical Science in 1977.

NPI Number

Dr. Ocallaghan's NPI number is 1457390619.

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Frequently Asked Questions

What languages does Dr. William Ocallaghan speak?
Dr. William Ocallaghan speaks English and Spanish.
Where is Dr. William Ocallaghan's office located?
Dr. William Ocallaghan's office is located at 100 E Ridge Rd Ste A, McAllen, TX, 78503.
Is Dr. William Ocallaghan accepting new patients?
Dr. William Ocallaghan is accepting new patients on Vitals. View Dr. William Ocallaghan's profile on Vitals to make an appointment.
Does Dr. William Ocallaghan accept my insurance?
You can see the insurance plans that Dr. William Ocallaghan accepts on their Vitals profile.
Which hospitals is Dr. William Ocallaghan affiliated with?
Dr. William Ocallaghan is affiliated with Rio Grande Regional Hospital.

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