IndividualActive
William Pierson
NPI 1275773129 · Mental Health Counselor · Holyoke, MA
William Pierson is a Mental Health Counselor provider in Holyoke, MA (NPI 1275773129).
Provider details
- NPI number
- 1275773129
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 3674 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES 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
319 Beech St
Holyoke, MA 01040-3925
Phone: (413) 540-1155
Street-level locationGet directions
Mailing address
3 Pine Brook Dr
Belchertown, MA 01007-9707
Registry dates
- Enumerated
- 2009-03-04
- Last updated
- 2009-03-04
Frequently asked questions
- What is William Pierson's NPI number?
- William Pierson's National Provider Identifier (NPI) is 1275773129, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Pierson's specialty?
- William Pierson is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is William Pierson located?
- William Pierson's practice location on file with NPPES is 319 Beech St, Holyoke, MA 01040-3925.
- What is William Pierson's phone number?
- The practice phone number listed in the NPPES registry for William Pierson is (413) 540-1155.
- Is William Pierson's NPI active?
- Yes — William Pierson's NPI (1275773129) is active in the NPPES registry as of the last update on 2009-03-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.