IndividualActive
Thomas Walker, M. D.
NPI 1619398401 · General Practice Physician · Riverdale, MD
Thomas Walker, M. D. is a General Practice Physician provider in Riverdale, MD (NPI 1619398401).
Provider details
- NPI number
- 1619398401
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M. D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0101035887 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(76/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
4700 River Rd
Riverdale, MD 20737-1228
Phone: (301) 436-3145
Approximate (ZIP-level) locationGet directions
Mailing address
4700 River Rd
Riverdale, MD 20737-1228
Registry dates
- Enumerated
- 2013-12-20
- Last updated
- 2013-12-20
Frequently asked questions
- What is Thomas Walker's NPI number?
- Thomas Walker's National Provider Identifier (NPI) is 1619398401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Walker's specialty?
- Thomas Walker is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Walker located?
- Thomas Walker's practice location on file with NPPES is 4700 River Rd, Riverdale, MD 20737-1228.
- What is Thomas Walker's phone number?
- The practice phone number listed in the NPPES registry for Thomas Walker is (301) 436-3145.
- Is Thomas Walker's NPI active?
- Yes — Thomas Walker's NPI (1619398401) is active in the NPPES registry as of the last update on 2013-12-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.