Western Massachusetts Psychological Services, LLC
NPI 1033990585 · Mental Health Clinic/Center (Including Community Mental Health Center) · Amherst, MA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Western Massachusetts Psychological Services, LLC is a Mental Health Clinic/Center (Including Community Mental Health Center) organization in Amherst, MA (NPI 1033990585).
Provider details
- NPI number
- 1033990585
- Entity type
- Organization
- Primary specialty
- Mental Health Clinic/Center (Including Community Mental Health Center)Ambulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Stephen Brevik, Psychologist(413) 252-8832
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
Mailing address
Registry dates
- Enumerated
- 2023-10-11
- Last updated
- 2023-10-11
- Certified
- 2023-10-11
Frequently asked questions
- What is Western Massachusetts Psychological Services, LLC's NPI number?
- Western Massachusetts Psychological Services, LLC's National Provider Identifier (NPI) is 1033990585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Western Massachusetts Psychological Services, LLC?
- Western Massachusetts Psychological Services, LLC is classified in the NPPES registry as Mental Health Clinic/Center (Including Community Mental Health Center) (Ambulatory Health Care Facilities).
- Where is Western Massachusetts Psychological Services, LLC located?
- Western Massachusetts Psychological Services, LLC's practice location on file with NPPES is 48 N Pleasant St Ste 201, Amherst, MA 01002-1758.
- What is Western Massachusetts Psychological Services, LLC's phone number?
- The practice phone number listed in the NPPES registry for Western Massachusetts Psychological Services, LLC is (413) 252-8832.
- Does Western Massachusetts Psychological Services, LLC accept Medicare?
- Western Massachusetts Psychological Services, LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Western Massachusetts Psychological Services, LLC?
- The authorized official listed on Western Massachusetts Psychological Services, LLC's NPPES record is Stephen Brevik, Psychologist. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Western Massachusetts Psychological Services, LLC's NPI active?
- Yes — Western Massachusetts Psychological Services, LLC's NPI (1033990585) is active in the NPPES registry as of the last update on 2023-10-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.