NPI age
13 years
Enumerated 2012-08-31
● Active
Type 1 · Individual
DR. Oliver Ezekiel Aregullin, MD
Aregullin is 1 of 45 internal medicine providers in Austin and 1 of 883 in Texas.
Primary specialty
Internal Medicine
Plus 5 subspecialties
Licensed in
TX, FL, MI
3 states
Status
Active
No deactivations on record
Last NPPES update
2025-12-29
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 883 active internal medicine providers in Texas.
NPI age
13 years
↓ 4 yr below median (17 yr)
State licenses
3 states
Top 78% — 21% of peers are multi-state
Subspecialties
3
In the 72% of peers with subspecialties
NPI lifetime · 2012 → 2026
2012-08Enumerated in NPPES
2012
2026
Where they practice
Practice location
9835 N Lake Creek Pkwy
Austin, TX 787176210
Mailing address
100 Michigan St Ne # Mc845
Grand Rapids, MI 495032560
Additional practice locations
1 secondary location on file with NPPES.
Location 2
333 N Santa Rosa Ste 900
San Antonio, TX 782073108
Specialties
-
Internal Medicine PrimaryAn area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical...
-
Internal MedicineA physician who specializes in the care and treatment of adults with congenital heart disease. Adult congenital heart disease (ACHD) physicians are trained to understand the complexities of congenital heart disease, anatomy, physiology,...
-
PediatricsA pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment...
-
PediatricsA pediatric cardiologist provides comprehensive care to patients with cardiovascular problems. This specialist is skilled in selecting, performing and evaluating the structural and functional assessment of the heart and blood vessels,...
Practice context
Part of a multi-provider practice. 69 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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