Quick answers
- Where does Oliver E. Aregullin see patients?
- Medicare's clinician data lists 2 practice locations, including Houston, TX and Austin, TX. Call before your visit to confirm the address.
- What is Oliver E. Aregullin's specialty?
- Medicare lists Pediatric Medicine as the primary specialty, and also Cardiovascular Disease (Cardiology), Internal Medicine and Interventional Cardiology.
- Does Oliver E. Aregullin accept Medicare assignment?
- Yes. Medicare's clinician data says Oliver E. Aregullin accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Oliver E. Aregullin?
- (832) 826-3000, as listed in official Medicare / NPI Registry data.
- What is Oliver E. Aregullin's NPI number?
- 1275882599. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Oliver E. Aregullin is enrolled with Medicare (CMS data updated 2026-10-02).
- 6651 Main StHouston, TX 77030 (832) 826‑3000
- 9835 N Lake Creek PkwyAustin, TX 78717 (727) 229‑3333
Group practices
Medicare enrollment lists Oliver E. Aregullin as a member of this group (CMS data updated 2026-10-02).
- Texas Childrens Physician Group671 clinicians in the group
Specialties
Other pediatricians in Houston
Clinicians with the same Medicare primary specialty in Houston, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275882599 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians