Leon K. Demar, MD
Dermatology Physician · New York, NY
Leon K. Demar, MD is a dermatology physician with a practice address in New York, New York, and NPI 1780645416, issued on Mar 31, 2006. Check the license (New York 123873, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Leon K. Demar
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 123873 NY
Self-reported in NPPES; status is on the state search - Practice location
- 985 5TH Ave, New York, NY 10075
- Phone
- (212) 988-9010
- Enumerated
- Mar 31, 2006
- Record last updated
- Mar 20, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (212) 535-1452
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 1,211 in New York → Look up another NPI →
Also registered at 985 5TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kimberly Zaga, LMSWSocial Worker1053117267
Verify Leon K. Demar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 123873Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average dermatology physician in 2024
16 Medicare Part D claims, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Leon K. Demar among 1,211 dermatology physician records in New York
Leon K. Demar, MD is one of 1,211 dermatology physician records with a practice address in New York. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2017 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in New York
There are 1,211 dermatology physician records in New York.
All 1,211 in New York → Every provider in New York → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Andrew Alexis, MDNew York, NY 100751285625160
- Sultan Alsalem, MD, MMSCNew York, NY 100751811413131
- Lewis Feder, M.D.New York, NY 100751679630370
- Lenora Felderman, MDNew York, NY 100751235264011
- Rachel GolpanianNew York, NY 100751982282687
- Michele Green, MDNew York, NY 100751689752404
- Monica Halem, MDNew York, NY 100751891996302
- Verena Isak, MDNew York, NY 100751376171876
Common questions
What is Leon K. Demar, MD's NPI number?
Leon K. Demar, MD's National Provider Identifier (NPI) is 1780645416, issued on Mar 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leon K. Demar, MD located?
The NPPES record lists a practice address at 985 5TH Ave, New York, NY, 10075. Phone: (212) 988-9010. Providers update this record themselves, so call before visiting.
How can I verify Leon K. Demar, MD's license?
NPPES lists New York license number 123873, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leon K. Demar, MD prescribe under Medicare Part D?
In 2024, Leon K. Demar, MD had 16 Medicare Part D claims; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.