Gwendolyn Leaf, MA
NPI 1184104259 · Mental Health Counselor · Northampton, MA
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gwendolyn Leaf, MA is a Mental Health Counselor provider in Northampton, MA (NPI 1184104259).
Provider details
- NPI number
- 1184104259
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MA
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
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
7 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
- 2018-08-17
- Last updated
- 2018-08-17
Frequently asked questions
- What is Gwendolyn Leaf's NPI number?
- Gwendolyn Leaf's National Provider Identifier (NPI) is 1184104259, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gwendolyn Leaf's specialty?
- Gwendolyn Leaf is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Gwendolyn Leaf located?
- Gwendolyn Leaf's practice location on file with NPPES is 269 Main St, Northampton, MA 01060-3586.
- What is Gwendolyn Leaf's phone number?
- The practice phone number listed in the NPPES registry for Gwendolyn Leaf is (413) 584-0075.
- Does Gwendolyn Leaf accept Medicare?
- Gwendolyn Leaf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gwendolyn Leaf's NPI active?
- Yes — Gwendolyn Leaf's NPI (1184104259) is active in the NPPES registry as of the last update on 2018-08-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.