Leonard Close, DDS
NPI 1407740731 · Student in an Organized Health Care Education/Training Program · Port Jefferson, NY
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leonard Close, DDS is a Student in an Organized Health Care Education/Training Program provider in Port Jefferson, NY (NPI 1407740731).
Provider details
- NPI number
- 1407740731
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- DDS
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
- 2025-06-03
- Last updated
- 2025-06-03
- Certified
- 2025-06-03
Frequently asked questions
- What is Leonard Close's NPI number?
- Leonard Close's National Provider Identifier (NPI) is 1407740731, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Close's specialty?
- Leonard Close is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Leonard Close located?
- Leonard Close's practice location on file with NPPES is 200 Belle Terre Rd, Port Jefferson, NY 11777-1968.
- What is Leonard Close's phone number?
- The practice phone number listed in the NPPES registry for Leonard Close is (631) 474-6000.
- Does Leonard Close accept Medicare?
- Leonard Close is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leonard Close's NPI active?
- Yes — Leonard Close's NPI (1407740731) is active in the NPPES registry as of the last update on 2025-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.