IndividualActive
Matthew Major, MS
NPI 1821129917 · Mental Health Counselor · Cambridge, MA
Matthew Major, MS is a Mental Health Counselor provider in Cambridge, MA (NPI 1821129917).
Provider details
- NPI number
- 1821129917
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MS
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(83/100 index)
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
950 Cambridge St
Cambridge, MA 02141-1001
Phone: (617) 441-1800
Street-level locationGet directions
Mailing address
58a Willow Ave
Somerville, MA 02144-2916
Registry dates
- Enumerated
- 2007-03-08
- Last updated
- 2007-07-08
Frequently asked questions
- What is Matthew Major's NPI number?
- Matthew Major's National Provider Identifier (NPI) is 1821129917, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Major's specialty?
- Matthew Major is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Matthew Major located?
- Matthew Major's practice location on file with NPPES is 950 Cambridge St, Cambridge, MA 02141-1001.
- What is Matthew Major's phone number?
- The practice phone number listed in the NPPES registry for Matthew Major is (617) 441-1800.
- Is Matthew Major's NPI active?
- Yes — Matthew Major's NPI (1821129917) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.