Derek Ellis
NPI 1720372857 · Addiction (Substance Use Disorder) Counselor · New York, NY
Derek Ellis is a Addiction (Substance Use Disorder) Counselor provider in New York, NY (NPI 1720372857).
Provider details
- NPI number
- 1720372857
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
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
15 yrs in NPPES 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
- 2011-06-07
- Last updated
- 2011-06-07
Frequently asked questions
- What is Derek Ellis's NPI number?
- Derek Ellis's National Provider Identifier (NPI) is 1720372857, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Ellis's specialty?
- Derek Ellis is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Derek Ellis located?
- Derek Ellis's practice location on file with NPPES is 311 W 35th St, New York, NY 10001-1701.
- What is Derek Ellis's phone number?
- The practice phone number listed in the NPPES registry for Derek Ellis is (212) 736-5900.
- Is Derek Ellis's NPI active?
- Yes — Derek Ellis's NPI (1720372857) is active in the NPPES registry as of the last update on 2011-06-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.