Ilyas K. Colombowala, MD Cardiac Electrophysiology · Houston (832) 478-5067
Opening June 2026

A new home for cardiac electrophysiology in the Texas Medical Center

The Advanced Cardiovascular Institute at 6624 Fannin opens in June 2026, a new ambulatory surgery center where Dr. Ilyas Colombowala performs catheter ablation, pacemaker, ICD, and loop recorder procedures for the comfort and convenience of our patients.

Address
6624 Fannin St, Houston, TX 77030
Opens
June 2026
Scheduling

About the Advanced Cardiovascular Institute

The Advanced Cardiovascular Institute is a new ambulatory surgery center (ASC) dedicated to cardiac electrophysiology. It joins our existing clinic in Northwest Houston and brings catheter ablation, pacemaker, ICD, and loop recorder procedures directly into the Texas Medical Center.

For patients living near downtown, the Inner Loop, River Oaks, the Galleria, West University, Bellaire, or anywhere along the I-69, US-59, or I-610 corridors, the TMC location offers a shorter drive and easier same-day return home after a procedure. For patients in Northwest Houston, the existing pathways at Houston Methodist Willowbrook and Houston Methodist Cypress remain unchanged.

Same-day discharge is standard for most outpatient EP procedures here. Consultations and follow-up visits continue at our Hargrave Rd clinic; the ASC focuses on the procedure itself.

Procedures performed at the TMC ASC

The procedures listed below are the core outpatient electrophysiology work performed at the Advanced Cardiovascular Institute. Each is scheduled in advance, with pre-procedure instructions sent ahead of time and post-procedure follow-up at our clinic.

  • Catheter ablation: atrial fibrillationPulsed-field, radiofrequency, and cryoballoon energy
  • Catheter ablation: SVTIncluding AVNRT, AVRT/WPW, and atrial tachycardias
  • Catheter ablation: atrial flutterTypical (CTI-dependent) and atypical flutter
  • Catheter ablation: ventricular tachycardiaIdiopathic and scar-mediated VT with 3D mapping
  • Pacemaker implantationTransvenous, leadless (Micra, Aveir), and CRT-P
  • ICD & CRT-D implantationTransvenous, subcutaneous (S-ICD), and extravascular (EV-ICD)
  • Loop recorder implantationFor unexplained syncope, palpitations, and post-ablation surveillance
  • Electrical cardioversionPlanned cardioversion for AFib and atrial flutter
  • Electrophysiology studyDiagnostic mapping, often paired with ablation

More complex or higher-acuity cases, including lead extraction, certain high-risk ablations, and any case requiring inpatient admission, are performed at our affiliated hospitals: Houston Methodist Willowbrook, Houston Methodist Cypress, Baylor St. Luke’s Medical Center, St. Luke’s The Vintage, or Memorial Hermann Memorial City.

Location & the Texas Medical Center

6624 Fannin is in the heart of the Texas Medical Center, one of the largest medical complexes in the world. The TMC location places our team adjacent to the resources of nearby hospitals and laboratories, with quick access along Fannin Street and the METRORail Red Line.

Aerial view of the Texas Medical Center skyline showing the Advanced Cardiovascular Institute building
The Texas Medical Center campus, the Advanced Cardiovascular Institute is among the buildings clustered along Fannin Street.

Getting here

Drivers can reach 6624 Fannin from US-59/I-69, I-610, and the Texas Medical Center exits along Fannin and Main. METRORail’s Red Line stops within the TMC for patients arriving by public transit. Parking and check-in details will be sent with the procedure scheduling packet.

Street-level view of the Advanced Cardiovascular Institute building along Fannin Street with METRORail tracks
The Advanced Cardiovascular Institute on Fannin Street, with the METRORail Red Line and Texas Children’s Hospital nearby.

Scheduling & what to expect

Scheduling for procedures at the Advanced Cardiovascular Institute begins after your in-clinic consultation. Most patients are seen at our Hargrave Rd clinic first; from there we discuss treatment options, obtain any prior authorizations, and schedule the procedure at the most appropriate facility.

For most outpatient EP procedures performed at the TMC ASC, patients arrive in the morning and go home the same day. Pre-procedure instructions, fasting guidance, and medication-hold instructions are sent in advance. A responsible adult is required for ride home after sedation.

To schedule a consultation or ask about a procedure at the TMC ASC, call (832) 478-5067 or request an appointment.

Frequently asked questions

Where is the Advanced Cardiovascular Institute located?

The Advanced Cardiovascular Institute is at 6624 Fannin Street, Houston, TX 77030, in the heart of the Texas Medical Center. It is reachable from US-59/I-69 and I-610, and the METRORail Red Line stops within the TMC. The center is scheduled to open in June 2026.

What procedures are performed at the TMC surgery center?

The center handles core outpatient electrophysiology procedures: catheter ablation for AFib, SVT, atrial flutter, and ventricular tachycardia; pacemaker implantation including leadless and CRT-P; ICD and CRT-D implantation; loop recorder placement; electrical cardioversion; and diagnostic EP studies. More complex or inpatient cases are done at affiliated hospitals.

Will I be able to go home the same day?

Yes. Same-day discharge is standard for most outpatient EP procedures at the TMC ASC. Patients arrive in the morning and go home the same day with instructions sent in advance. Because sedation is involved, you will need a responsible adult to drive you home.

How do I schedule a procedure at the ASC?

Scheduling begins after an in-clinic consultation. Most patients are first seen at the Hargrave Road clinic in Northwest Houston, where treatment options are discussed and any prior authorizations are obtained, and the procedure is then scheduled at the most appropriate facility. Call (832) 478-5067 to start.

What if my case is more complex?

More complex or higher-acuity cases, including lead extraction, certain high-risk ablations, and any case needing inpatient admission, are performed at affiliated hospitals: Houston Methodist Willowbrook, Houston Methodist Cypress, Baylor St. Luke's Medical Center, St. Luke's The Vintage, or Memorial Hermann Memorial City.

Ready to talk?

New patients seen within one week for urgent concerns.

Clinic: 13325 Hargrave Rd, Suite 280, Houston, TX 77070 · Mon-Fri 8:30 AM – 5:00 PM

Opening June 2026: Advanced Cardiovascular Institute at the Texas Medical Center · 6624 Fannin St, Houston, TX 77030

Call (832) 478-5067