Mark L. Horowitz, M.D.
Pediatrics Physician · Warwick, NY
Mark L. Horowitz, M.D. is a pediatrics physician with a practice address in Warwick, New York, and NPI 1477649853, issued on Oct 5, 2006. Check the license (New York 135749-1, 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
- Mark L. Horowitz
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License numbers
- 135749-1 NY
25MA06649400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 10 Ronald Reagan Blvd, Warwick, NY 10990
- Phone
- (845) 986-2058
- Enumerated
- Oct 5, 2006
- Record last updated
- Jun 17, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (845) 986-7669
- Medicaid IDs
- 00513617 NY
0283908 NJ - Entity
- Type 1 · individual
Also registered at 10 Ronald Reagan Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Luciano Barone, M.D.Pediatrics Physician1972601862
- Melanie Goth, M.D.Pediatrics Physician1447346838
- Jeffrey Horowitz, M.D.Pediatrics Physician1558469437
- Elissa Kappel, FNP-BCFamily Nurse Practitioner1922573930
Verify Mark L. Horowitz 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 135749-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6 pediatrics physician records list a practice address in Warwick
They are 6 of the 304 NPPES records with a practice address in Warwick, and 5,795 pediatrics physician records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 6 in Warwick → All 5,795 in New York → Every provider in Warwick →
Other pediatrics physician records in New York
- Meghan Aabo, D.O.Albany, NY1659765857
- Edda AbadRidgewood, NY1295768059
- Danielle Abadi, MDBrooklyn, NY1003298993
- Jacobo AbadiBronx, NY1710064001
- Thomas Abbamont, MDCamillus, NY1922199389
- Hamza Abbasi, MDNiagara Falls, NY1083099501
- Gary Abberbock, MDBrooklyn, NY1114931789
- Michael Abbey-Mensah, M.DBrooklyn, NY1497853451
- Ann Marie Abbondante, M.D.Staten Island, NY1558334433
- Jake AbbuhlAlbany, NY1114504313
Common questions
What is Mark L. Horowitz, M.D.'s NPI number?
Mark L. Horowitz, M.D.'s National Provider Identifier (NPI) is 1477649853, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Horowitz, M.D. located?
The NPPES record lists a practice address at 10 Ronald Reagan Blvd, Warwick, NY, 10990. Phone: (845) 986-2058. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Horowitz, M.D.'s license?
NPPES lists New York license number 135749-1, 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.