Marc Andrew Horowitz, MD
Ophthalmology Physician · Scarsdale, NY
Marc Andrew Horowitz, MD is an ophthalmology physician with a practice address in Scarsdale, New York, and NPI 1154405173, issued on Oct 25, 2006. Check the license (New York 138509, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Marc Andrew Horowitz
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 138509 NY
Self-reported in NPPES; status is on the state search - Practice location
- 14 Harwood Court, Scarsdale, NY 10583
- Phone
- (914) 723-5511
- Enumerated
- Oct 25, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (914) 723-5659
- Medicaid ID
- 00770498 NY
- Medicare enrollment
- Enrolled (PECOS I20110426000724); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 1,822 in New York → Look up another NPI →
Also registered at 14 Harwood Court
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eve Caligor, MDPsychiatry Physician1649358805
- David Kriegel, MDDermatology Physician1831184779
- Michael Mruz, MSW LCSW ACSWClinical Social Worker1316074941
Verify Marc Andrew 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 138509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average ophthalmology physician in 2024
278 Medicare Part D claims for 99 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims.
Most prescribed
- Latanoprost78 claims
- Tobramycin-Dexamethasone43 claims
- Dorzolamide-Timolol41 claims
- Timolol Maleate24 claims
- Lumigan18 claims
- Travoprost16 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.
The MIPS final score for 2023 (Medicare payment program): 91.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- North Shore-Lij Medical PCManhasset, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Andrew Horowitz among 1,822 ophthalmology physician records in New York
Marc Andrew Horowitz, MD is one of 1,822 ophthalmology 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. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1978 · median 1995 among the 1,215 with a school on file
- Record last updated2007 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 ophthalmology physician records list a practice address in Scarsdale
They are 12 of the 1,028 NPPES records with a practice address in Scarsdale, and 1,822 ophthalmology physician records in New York.
All 1,822 in New York → Every provider in Scarsdale → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Thomas Dunn, MDScarsdale, NY 105831861131765
- George Florakis, MDScarsdale, NY 105831861521239
- Allan Friedland, MDScarsdale, NY 105831801828876
- Sabine Khan, MDScarsdale, NY 105831275915845
- Miriam LevyScarsdale, NY 105831659740686
- Deborah Lipson, MDScarsdale, NY 105831902881816
- Kevin Mathisson, M.D.Scarsdale, NY 105831326076639
- Valarie Overton, MDScarsdale, NY 105831922139377
Common questions
What is Marc Andrew Horowitz, MD's NPI number?
Marc Andrew Horowitz, MD's National Provider Identifier (NPI) is 1154405173, issued on Oct 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marc Andrew Horowitz, MD located?
The NPPES record lists a practice address at 14 Harwood Court, Scarsdale, NY, 10583. Phone: (914) 723-5511. Providers update this record themselves, so call before visiting.
How can I verify Marc Andrew Horowitz, MD's license?
NPPES lists New York license number 138509, 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 Marc Andrew Horowitz, MD prescribe under Medicare Part D?
In 2024, Marc Andrew Horowitz, MD had 278 Medicare Part D claims for 99 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Marc Andrew Horowitz, MD's MIPS final score?
The 2023 MIPS final score is 91.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.