William Walker, M.D.
NPI 1619242047 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Houston, TX
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Walker, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Houston, TX (NPI 1619242047).
Provider details
- NPI number
- 1619242047
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- F6158 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2012-03-19
- Last updated
- 2015-04-29
Frequently asked questions
- What is William Walker's NPI number?
- William Walker's National Provider Identifier (NPI) is 1619242047, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Walker's specialty?
- William Walker is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is William Walker located?
- William Walker's practice location on file with NPPES is 2831 Sackett St, Houston, TX 77098-1125.
- What is William Walker's phone number?
- The practice phone number listed in the NPPES registry for William Walker is (713) 520-0021.
- Does William Walker accept Medicare?
- William Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Walker's NPI active?
- Yes — William Walker's NPI (1619242047) is active in the NPPES registry as of the last update on 2015-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.