Leon Demar, MD
NPI 1780645416 · Dermatology Physician · New York, NY
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leon Demar, MD is a Dermatology Physician provider in New York, NY (NPI 1780645416).
Provider details
- NPI number
- 1780645416
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 123873 (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
20 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
- 2006-03-31
- Last updated
- 2017-03-20
Frequently asked questions
- What is Leon Demar's NPI number?
- Leon Demar's National Provider Identifier (NPI) is 1780645416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leon Demar's specialty?
- Leon Demar is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Leon Demar located?
- Leon Demar's practice location on file with NPPES is 985 5th Ave, New York, NY 10075-0142.
- What is Leon Demar's phone number?
- The practice phone number listed in the NPPES registry for Leon Demar is (212) 988-9010.
- Does Leon Demar accept Medicare?
- Leon Demar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leon Demar's NPI active?
- Yes — Leon Demar's NPI (1780645416) is active in the NPPES registry as of the last update on 2017-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.