William Clark PHD and Associates, PLC
NPI 1255549861 · Professional Counselor · Vienna, VA
William Clark PHD and Associates, PLC is a Professional Counselor organization in Vienna, VA (NPI 1255549861).
Provider details
- NPI number
- 1255549861
- Entity type
- Organization
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- William Clark, Director(703) 506-8378
- License
- 0810002215 (VA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
- 2007-05-18
- Last updated
- 2020-08-22
Frequently asked questions
- What is William Clark PHD and Associates, PLC's NPI number?
- William Clark PHD and Associates, PLC's National Provider Identifier (NPI) is 1255549861, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William Clark PHD and Associates, PLC?
- William Clark PHD and Associates, PLC is classified in the NPPES registry as Professional Counselor (Behavioral Health & Social Service Providers).
- Where is William Clark PHD and Associates, PLC located?
- William Clark PHD and Associates, PLC's practice location on file with NPPES is 2110 Gallows Rd # B, Vienna, VA 22182-3962.
- What is William Clark PHD and Associates, PLC's phone number?
- The practice phone number listed in the NPPES registry for William Clark PHD and Associates, PLC is (703) 506-8378.
- Who is the authorized official for William Clark PHD and Associates, PLC?
- The authorized official listed on William Clark PHD and Associates, PLC's NPPES record is William Clark, Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William Clark PHD and Associates, PLC's NPI active?
- Yes — William Clark PHD and Associates, PLC's NPI (1255549861) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.