Marc A. Leaf, MD
Internal Medicine Physician · Brooklyn, NY
Marc A. Leaf, MD is an internal medicine physician with a practice address in Brooklyn, New York, and NPI 1700988797, issued on Sep 1, 2006. Check the license (New York 151457, as entered in NPPES) on the NYS Education Department, Office of the Professions; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marc A. Leaf
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 151457 NY
Self-reported in NPPES; status is on the state search - Practice location
- 8023 19TH Ave, Brooklyn, NY 11214
- Phone
- (718) 232-3003
- Enumerated
- Sep 1, 2006
- Record last updated
- Mar 14, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (718) 232-5445
- Medicaid ID
- 01585666 NY
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 8023 19TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mordechai ReiferSocial Worker1326787920
Verify Marc A. Leaf 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 151457Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Marc A. Leaf among 12,067 internal medicine physician records in New York
Marc A. Leaf, MD is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileNo · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2011 · 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 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,497 internal medicine physician records list a practice address in Brooklyn
They are 1,497 of the 64,057 NPPES records with a practice address in Brooklyn, and 12,067 internal medicine physician records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 12,067 in New York → Every provider in Brooklyn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Irine Corst, MDBrooklyn, NY 112141386783132
- Irina Gekker, MDBrooklyn, NY 112141225090137
- Lubov Klimova, MDBrooklyn, NY 112141477653798
- Orrin Lippoff, MDBrooklyn, NY 112141225038664
- Anming Luo, M.D.Brooklyn, NY 112141821162611
- Stephen Mastrianni, DOBrooklyn, NY 112141174518211
- Hanan Miller, M.D.Brooklyn, NY 112141437143377
- Ralph Peluso, MDBrooklyn, NY 112141093716987
Common questions
What is Marc A. Leaf, MD's NPI number?
Marc A. Leaf, MD's National Provider Identifier (NPI) is 1700988797, issued on Sep 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc A. Leaf, MD located?
The NPPES record lists a practice address at 8023 19TH Ave, Brooklyn, NY, 11214. Phone: (718) 232-3003. Providers update this record themselves, so call before visiting.
How can I verify Marc A. Leaf, MD's license?
NPPES lists New York license number 151457, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.