1. Home
  2. Directory
  3. Texas
  4. Fort Sam Houston
  5. Internal Medicine
  6. NPI Profile

DR. BRIAN MARKELZ M.D.
NPI 1245397785
Internal Medicine - Cardiovascular Disease in Fort Sam Houston, TX

Active since January 03, 2007
3551 ROGER BROOKE DR, FORT SAM HOUSTON, TX 78234(210) 916-2500 Get Directions Write a Review

NPPES record last updated: September 20, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Sep 20, 2022, Nov 15, 2016 (2 updates tracked since 2016).

About Dr. Brian Markelz M.d. NPPES

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

DR. BRIAN MARKELZ M.D. (NPI 1245397785) is an individual cardiovascular disease provider in Fort Sam Houston, Texas, licensed in Texas (M4322) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1245397785
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. BRIAN MARKELZCredential: M.D.
Location Address3551 ROGER BROOKE DRFort Sam Houston, TX 78234-4504
Mailing Address3551 Roger Brooke DrFort Sam Houston, TX 78234-4504 · (210) 916-2500
Phone(210) 916-2500
Sole ProprietorNo
Enumeration DateJanuary 3, 2007
Last NPPES UpdateSeptember 20, 20222 updates tracked since enumeration
NPPES CertifiedSeptember 20, 2022
✔ NPI 1245397785 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in TX · M4322
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
3551 ROGER BROOKE DR, Fort Sam Houston, TX 78234
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

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.

JANET JONES SIMS CRNA
Nurse Anesthetist, Certified Registered
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (253) 223-6272
JAMES KENNEDY HARDIN PA-C
Physician Assistant
3551 ROGER BROOKE DR
JBSA FT SAM HOUSTON, TX 78234
Bexar County (210) 295-4996
DR. DANIEL VICTOR-CALVIN HAMMOND M.D.
Pediatrics (Pediatric Endocrinology)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 916-3020
JESSICA FULLER LCSW
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 808-1859
DR. JASON ROBERT HALL M.D.
Neurological Surgery
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 539-9582
MRS. KATHRYN ELAINE HELLAND LCSW
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 539-9582
DR. HALWARD BLEGEN IV DO
Ophthalmology
3551 ROGER BROOKE DR
JBSA FORT SAM HOUSTON, TX 78234
Bexar County (210) 220-7419
KOLE HOLLAND SPAULDING M.D.
Emergency Medicine (Emergency Medical Services)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 539-9582

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 Brian Markelz's NPI number?

The NPI number for Brian Markelz is 1245397785. It was assigned to this individual provider in the NPPES registry on January 3, 2007.

Where is Brian Markelz located?

Brian Markelz practices at 3551 Roger Brooke Dr, Fort Sam Houston, TX 78234. The listed phone number is (210) 916-2500.

What is Brian Markelz's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

What insurance does Brian Markelz accept?

Health plans from Blue Cross and Blue Shield of Texas list Brian Markelz 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 Brian Markelz was last updated on September 20, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.