William O'Brien, CSAC
NPI 1356270482 · Addiction (Substance Use Disorder) Counselor · Roanoke, VA
William O'Brien, CSAC is a Addiction (Substance Use Disorder) Counselor provider in Roanoke, VA (NPI 1356270482).
Provider details
- NPI number
- 1356270482
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CSAC
- Sex
- Male
- Sole proprietor
- No
- License
- 0710101465 (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
Under 1 yr in 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
- 2026-05-15
- Last updated
- 2026-05-15
- Certified
- 2026-05-15
Frequently asked questions
- What is William O'Brien's NPI number?
- William O'Brien's National Provider Identifier (NPI) is 1356270482, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William O'Brien's specialty?
- William O'Brien is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is William O'Brien located?
- William O'Brien's practice location on file with NPPES is 707 5th St Ne, Roanoke, VA 24016-2123.
- What is William O'Brien's phone number?
- The practice phone number listed in the NPPES registry for William O'Brien is (540) 966-5808.
- Is William O'Brien's NPI active?
- Yes — William O'Brien's NPI (1356270482) is active in the NPPES registry as of the last update on 2026-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.