Brian Leddy, MD
NPI 1851975957 · Internal Medicine Physician · Brentwood, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Leddy, MD is a Internal Medicine Physician provider in Brentwood, NY (NPI 1851975957).
Provider details
- NPI number
- 1851975957
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 333704 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
- 2021-05-06
- Last updated
- 2025-02-24
- Certified
- 2025-02-24
Frequently asked questions
- What is Brian Leddy's NPI number?
- Brian Leddy's National Provider Identifier (NPI) is 1851975957, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Leddy's specialty?
- Brian Leddy is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Leddy located?
- Brian Leddy's practice location on file with NPPES is 160 4th St, Brentwood, NY 11717-4658.
- What is Brian Leddy's phone number?
- The practice phone number listed in the NPPES registry for Brian Leddy is (631) 273-7105.
- Does Brian Leddy accept Medicare?
- Brian Leddy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Leddy's NPI active?
- Yes — Brian Leddy's NPI (1851975957) is active in the NPPES registry as of the last update on 2025-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.