William Ellis, CASAC
NPI 1619601101 · Addiction (Substance Use Disorder) Counselor · Troy, NY
William Ellis, CASAC is a Addiction (Substance Use Disorder) Counselor provider in Troy, NY (NPI 1619601101).
Provider details
- NPI number
- 1619601101
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CASAC
- Sex
- Male
- Sole proprietor
- No
- License
- 35967 (NY)
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
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
Mailing address
Additional practice locations (1)
- 600 Franklin St Ste 204Schenectady, NY 12305-2100Phone: (518) 372-7031
Registry dates
- Enumerated
- 2022-07-12
- Last updated
- 2022-11-28
- Certified
- 2022-11-28
Frequently asked questions
- What is William Ellis's NPI number?
- William Ellis's National Provider Identifier (NPI) is 1619601101, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Ellis's specialty?
- William Ellis is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is William Ellis located?
- William Ellis's practice location on file with NPPES is 2435 6th Ave, Troy, NY 12180-2227.
- What is William Ellis's phone number?
- The practice phone number listed in the NPPES registry for William Ellis is (518) 274-5143.
- Is William Ellis's NPI active?
- Yes — William Ellis's NPI (1619601101) is active in the NPPES registry as of the last update on 2022-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.