Stephen Schlein, PHD
NPI 1427143403 · Psychologist · Lexington, MA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Schlein, PHD is a Psychologist provider in Lexington, MA (NPI 1427143403).
Provider details
- NPI number
- 1427143403
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 37 (MA)
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
19 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
- 2006-10-04
- Last updated
- 2007-07-08
Frequently asked questions
- What is Stephen Schlein's NPI number?
- Stephen Schlein's National Provider Identifier (NPI) is 1427143403, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Schlein's specialty?
- Stephen Schlein is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephen Schlein located?
- Stephen Schlein's practice location on file with NPPES is 3 Wallis Court, Lexington, MA 02421.
- What is Stephen Schlein's phone number?
- The practice phone number listed in the NPPES registry for Stephen Schlein is (781) 861-8077.
- Does Stephen Schlein accept Medicare?
- Stephen Schlein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Schlein's NPI active?
- Yes — Stephen Schlein's NPI (1427143403) 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.