David Gregory Walker, M.D., P.A.
NPI 1225239544 · Family Medicine Physician · Houston, TX
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Gregory Walker, M.D., P.A. is a Family Medicine Physician organization in Houston, TX (NPI 1225239544).
Provider details
- NPI number
- 1225239544
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- David Walker, Owner(713) 776-2200
- License
- G3884 (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
Other names (DBA / former)
- Doing business as
- Walker Family Practice
Registry dates
- Enumerated
- 2007-05-31
- Last updated
- 2017-02-23
Frequently asked questions
- What is David Gregory Walker, M.D., P.A.'s NPI number?
- David Gregory Walker, M.D., P.A.'s National Provider Identifier (NPI) is 1225239544, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is David Gregory Walker, M.D., P.A.?
- David Gregory Walker, M.D., P.A. is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Gregory Walker, M.D., P.A. located?
- David Gregory Walker, M.D., P.A.'s practice location on file with NPPES is 8408 Bellaire Blvd, Houston, TX 77036-4702.
- What is David Gregory Walker, M.D., P.A.'s phone number?
- The practice phone number listed in the NPPES registry for David Gregory Walker, M.D., P.A. is (713) 776-2200.
- Does David Gregory Walker, M.D., P.A. accept Medicare?
- David Gregory Walker, M.D., P.A. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for David Gregory Walker, M.D., P.A.?
- The authorized official listed on David Gregory Walker, M.D., P.A.'s NPPES record is David Walker, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is David Gregory Walker, M.D., P.A.'s NPI active?
- Yes — David Gregory Walker, M.D., P.A.'s NPI (1225239544) is active in the NPPES registry as of the last update on 2017-02-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.