Brian Markelz, M.D.
NPI 1245397785 · Cardiovascular Disease Physician · Fort Sam Houston, TX
Brian Markelz, M.D. is a Cardiovascular Disease Physician provider in Fort Sam Houston, TX (NPI 1245397785).
Provider details
- NPI number
- 1245397785
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M4322 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-03
- Last updated
- 2022-09-20
- Certified
- 2022-09-20
Frequently asked questions
- What is Brian Markelz's NPI number?
- Brian Markelz's National Provider Identifier (NPI) is 1245397785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Markelz's specialty?
- Brian Markelz is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Markelz located?
- Brian Markelz's practice location on file with NPPES is 3551 Roger Brooke Dr, Fort Sam Houston, TX 78234-4504.
- What is Brian Markelz's phone number?
- The practice phone number listed in the NPPES registry for Brian Markelz is (210) 916-2500.
- Is Brian Markelz's NPI active?
- Yes — Brian Markelz's NPI (1245397785) is active in the NPPES registry as of the last update on 2022-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.