DR. BRENDAN O'BRIEN M.D.
NPI 1598073181
Surgery - Trauma Surgery in San Antonio, TX

Active since September 17, 2010PECOS Enrolled
3551 ROGER BROOKE DR, SAN ANTONIO, TX 78234(210) 539-9582 Get Directions Write a Review

NPPES record last updated: December 8, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 8, 2025, May 3, 2024, Oct 27, 2022 and 1 more (4 updates tracked since 2016).

About Dr. Brendan O'brien M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. BRENDAN O'BRIEN M.D. (NPI 1598073181) is an individual trauma surgery provider in San Antonio, Texas, licensed in Texas (T9464) and active in the NPI registry since September 2010. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1598073181
Entity TypeIndividualMale
Primary Taxonomy2086S0127X
Provider Legal NameDR. BRENDAN O'BRIENCredential: M.D.
Location Address3551 ROGER BROOKE DRSan Antonio, TX 78234-4504
Mailing Address8901 Wisconsin AveBethesda, MD 20889-0004
Sole ProprietorYes
Enumeration DateSeptember 17, 2010
Last NPPES UpdateDecember 8, 20254 updates tracked since enumeration
NPPES CertifiedDecember 8, 2025
NPI 1598073181 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtySurgery · Trauma SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code2086S0127X
License Licensed in TX · T9464
Definition
Trauma 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 critical care, typically leading to additional board certification in surgical critical care. There is no trauma surgery board certification at this point. To obtain board certification in surgical critical care, a fellowship in surgical critical care or anesthesiology critical care must be completed during or after general surgery residency.
Also ListedSurgeryTaxonomy 208600000X · License 0101251259 (VA)
Also ListedSurgery · Surgical Critical CareTaxonomy 2086S0102X · License ME146116 (FL)
3551 ROGER BROOKE DR, San Antonio, TX 78234

Secondary Practice Locations 2

Location 11 Boone RdBremerton, WA 98312-1894 · Phone (360) 475-4916
Location 21887 Kingsley Ave Ste 1900Orange Park, FL 32073-4451 · Phone (904) 276-2549 · Fax (904) 276-9235

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Brendan O'brien M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Nurse Anesthetist, Certified Registered
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Physician Assistant
3551 ROGER BROOKE DR
JBSA FT SAM HOUSTON, TX 78234
Pediatrics (Pediatric Endocrinology)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Neurological Surgery
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Ophthalmology
3551 ROGER BROOKE DR
JBSA FORT SAM HOUSTON, TX 78234
Emergency Medicine (Emergency Medical Services)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Brendan O'brien's NPI number?

The NPI number for Brendan O'brien is 1598073181. It was assigned to this individual provider in the NPPES registry on September 17, 2010.

Where is Brendan O'brien located?

Brendan O'brien practices at 3551 Roger Brooke Dr, San Antonio, TX 78234. The listed phone number is (210) 539-9582.

What is Brendan O'brien's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Trauma Surgery, with taxonomy code 2086S0127X.

Is Brendan O'brien enrolled in Medicare?

Yes. Brendan O'brien is registered in the Medicare PECOS enrollment system.

What insurance does Brendan O'brien accept?

Health plans from Blue Cross and Blue Shield of Texas, Florida Blue (BlueCross BlueShield FL) and Florida Blue HMO (a BlueCross BlueShield FL company) list Brendan O'brien as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Brendan O'brien was last updated on December 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.