William Dwinnells, LMHC
NPI 1003980665 · Mental Health Counselor · Ashland, MA
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Dwinnells, LMHC is a Mental Health Counselor provider in Ashland, MA (NPI 1003980665).
Provider details
- NPI number
- 1003980665
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LMHC
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
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
- 2006-11-17
- Last updated
- 2022-02-08
- Certified
- 2022-02-08
Frequently asked questions
- What is William Dwinnells's NPI number?
- William Dwinnells's National Provider Identifier (NPI) is 1003980665, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Dwinnells's specialty?
- William Dwinnells is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is William Dwinnells located?
- William Dwinnells's practice location on file with NPPES is 40 Spyglass Hill Dr, Ashland, MA 01721-2365.
- What is William Dwinnells's phone number?
- The practice phone number listed in the NPPES registry for William Dwinnells is (978) 254-4119.
- Does William Dwinnells accept Medicare?
- William Dwinnells is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Dwinnells's NPI active?
- Yes — William Dwinnells's NPI (1003980665) is active in the NPPES registry as of the last update on 2022-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.