NPI age
15 years
Enumerated 2010-09-17
● Active
Type 1 · Individual
DR. Brendan O'Brien, M.D.
O'Brien is 1 of 7 surgery providers in San Antonio and 1 of 159 in Texas.
Primary specialty
Surgery
Plus 2 subspecialties
Licensed in
TX, VA, FL
3 states
Status
Active
No deactivations on record
Last NPPES update
2025-12-08
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 159 active surgery providers in Texas.
NPI age
15 years
≈ at median (16 yr)
State licenses
3 states
Top 81% — 18% of peers are multi-state
Subspecialties
2
In the 58% of peers with subspecialties
NPI lifetime · 2010 → 2026
2010-09Enumerated in NPPES
2010
2026
Where they practice
Practice location
3551 Roger Brooke Dr
San Antonio, TX 782344504
Mailing address
8901 Wisconsin Ave
Bethesda, MD 208890004
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
1 Boone Rd
Bremerton, WA 983121894
Location 3
1887 Kingsley Ave Ste 1900
Orange Park, FL 320734451
Specialties
-
Surgery PrimaryTrauma surgery is a recognized subspecialty of general surgery. Trauma surgeons are physicians who have completed a five-year general surgery residency and usually continue with a one to two year fellowship in trauma and/or surgical...
-
SurgeryA general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and...
-
SurgeryA surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ...
Practice context
Part of a multi-provider practice. 365 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 159 Surgery providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.