Mark Buck, DO
NPI 1578085031 · Family Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Buck, DO is a Family Medicine Physician provider in San Antonio, TX (NPI 1578085031).
Provider details
- NPI number
- 1578085031
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- BP10061747 (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
8 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
- 2017-07-16
- Last updated
- 2017-07-16
Frequently asked questions
- What is Mark Buck's NPI number?
- Mark Buck's National Provider Identifier (NPI) is 1578085031, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Buck's specialty?
- Mark Buck is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Buck located?
- Mark Buck's practice location on file with NPPES is 1102 Barclay St, San Antonio, TX 78207-7161.
- What is Mark Buck's phone number?
- The practice phone number listed in the NPPES registry for Mark Buck is (832) 314-7334.
- Does Mark Buck accept Medicare?
- Mark Buck is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Buck's NPI active?
- Yes — Mark Buck's NPI (1578085031) is active in the NPPES registry as of the last update on 2017-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.