IndividualActive
William Walker
NPI 1033841606 · Mental Health Counselor · Mc Lean, VA
William Walker is a Mental Health Counselor provider in Mc Lean, VA (NPI 1033841606).
Provider details
- NPI number
- 1033841606
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0704014866 (VA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(65/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
8180 Greensboro Dr Ste 350
Mc Lean, VA 22102-3862
Phone: (571) 251-1303
Street-level locationGet directions
Mailing address
4400 Bellavia Ln
Fairfax, VA 22030-4491
Additional practice locations (1)
- 4400 Bellavia LnFairfax, VA 22030-4491Phone: (571) 251-1303
Registry dates
- Enumerated
- 2022-06-30
- Last updated
- 2022-06-30
- Certified
- 2022-06-30
Frequently asked questions
- What is William Walker's NPI number?
- William Walker's National Provider Identifier (NPI) is 1033841606, 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 Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is William Walker located?
- William Walker's practice location on file with NPPES is 8180 Greensboro Dr Ste 350, Mc Lean, VA 22102-3862.
- What is William Walker's phone number?
- The practice phone number listed in the NPPES registry for William Walker is (571) 251-1303.
- Is William Walker's NPI active?
- Yes — William Walker's NPI (1033841606) is active in the NPPES registry as of the last update on 2022-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.