William Sommer
NPI 1427910934 · Addiction (Substance Use Disorder) Counselor · Eugene, OR
William Sommer is a Addiction (Substance Use Disorder) Counselor provider in Eugene, OR (NPI 1427910934).
Provider details
- NPI number
- 1427910934
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sole proprietor
- No
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
83% 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
- 2025-12-02
- Last updated
- 2025-12-02
- Certified
- 2025-12-02
Frequently asked questions
- What is William Sommer's NPI number?
- William Sommer's National Provider Identifier (NPI) is 1427910934, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Sommer's specialty?
- William Sommer is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is William Sommer located?
- William Sommer's practice location on file with NPPES is 1420 Green Acres Rd, Eugene, OR 97408-1791.
- What is William Sommer's phone number?
- The practice phone number listed in the NPPES registry for William Sommer is (541) 762-4500.
- Is William Sommer's NPI active?
- Yes — William Sommer's NPI (1427910934) is active in the NPPES registry as of the last update on 2025-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.