Mark Holden, MD
NPI 1447319991 · Internal Medicine Physician · Galveston, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Holden, MD is a Internal Medicine Physician provider in Galveston, TX (NPI 1447319991).
Provider details
- NPI number
- 1447319991
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- H0456 (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
- 2006-12-08
- Last updated
- 2010-11-05
Frequently asked questions
- What is Mark Holden's NPI number?
- Mark Holden's National Provider Identifier (NPI) is 1447319991, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Holden's specialty?
- Mark Holden is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Holden located?
- Mark Holden's practice location on file with NPPES is Department of Internal Medicine, Galveston, TX 77555-0569.
- What is Mark Holden's phone number?
- The practice phone number listed in the NPPES registry for Mark Holden is (409) 772-1176.
- Does Mark Holden accept Medicare?
- Mark Holden is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Holden's NPI active?
- Yes — Mark Holden's NPI (1447319991) is active in the NPPES registry as of the last update on 2010-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.