Sean Mcmahon, MSW
NPI 1639802804 · School Counselor · Northampton, MA
Sean Mcmahon, MSW is a School Counselor provider in Northampton, MA (NPI 1639802804).
Provider details
- NPI number
- 1639802804
- Entity type
- Individual
- Primary specialty
- School CounselorBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Counselor101Y00000X
Behavioral Health & Social Service Providers
- Mental Health Counselor101YM0800X
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
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
- 2022-07-06
- Last updated
- 2022-07-06
- Certified
- 2022-07-06
Frequently asked questions
- What is Sean Mcmahon's NPI number?
- Sean Mcmahon's National Provider Identifier (NPI) is 1639802804, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Mcmahon's specialty?
- Sean Mcmahon is listed in the NPPES registry with a primary specialty of School Counselor (Behavioral Health & Social Service Providers).
- Where is Sean Mcmahon located?
- Sean Mcmahon's practice location on file with NPPES is 8 Atwood Dr, Northampton, MA 01060-4266.
- What is Sean Mcmahon's phone number?
- The practice phone number listed in the NPPES registry for Sean Mcmahon is (413) 586-5555.
- Is Sean Mcmahon's NPI active?
- Yes — Sean Mcmahon's NPI (1639802804) is active in the NPPES registry as of the last update on 2022-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.