Mark Louis Horn, M.D., M.P.H.
Rheumatology Physician · Tenafly, NJ
Mark Louis Horn, M.D., M.P.H. is a rheumatology physician with a practice address in Tenafly, New Jersey, and NPI 1629106380, issued on Mar 2, 2007. Check the license on the New Jersey State Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Louis Horn
- Credential
- M.D., M.P.H.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 139526 NY
Self-reported in NPPES; status is on the state search - Practice location
- 124 Oxford Dr, Tenafly, NJ 07670
- Phone
- (201) 871-9230
- Enumerated
- Mar 2, 2007
- Record last updated
- Aug 17, 2009 (not updated in 17 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 253 in New Jersey → Look up another NPI →
Verify Mark Louis Horn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical ExaminersCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark Louis Horn among 253 rheumatology physician records in New Jersey
Mark Louis Horn, M.D., M.P.H. is one of 253 rheumatology physician records with a practice address in New Jersey. 86% 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 44% newer
- In a Medicare fileNo · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 75% of these records are
- Record last updated2009 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in New Jersey
There are 253 rheumatology physician records in New Jersey. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 253 in New Jersey → Every provider in Tenafly → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Sary Aristy, MDTeaneck, NJ 076661922312628
- Dewan FahimaTeaneck, NJ 076661700128915
- Neil Gonter, MDTeaneck, NJ 076661760465579
- Alexandru Kimel, M.D.Teaneck, NJ 076661992940860
- Ralph Marcus, M.D.Teaneck, NJ 076661033174677
- Anna Zezon, M.D.Teaneck, NJ 076661871866632
- Michael Gross, MDParamus, NJ 076521386701654
- Pieusha MalhotraParamus, NJ 076521932549532
Common questions
What is Mark Louis Horn, M.D., M.P.H.'s NPI number?
Mark Louis Horn, M.D., M.P.H.'s National Provider Identifier (NPI) is 1629106380, issued on Mar 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Louis Horn, M.D., M.P.H. located?
The NPPES record lists a practice address at 124 Oxford Dr, Tenafly, NJ, 07670. Phone: (201) 871-9230. Providers update this record themselves, so call before visiting.
How can I verify Mark Louis Horn, M.D., M.P.H.'s license?
Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. 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.