Marc Horowitz, MD
NPI 1154405173 · Ophthalmology Physician · Scarsdale, NY
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Horowitz, MD is a Ophthalmology Physician provider in Scarsdale, NY (NPI 1154405173).
Provider details
- NPI number
- 1154405173
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 138509 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,938 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Exam of the Internal Drainage System of Eye92020 | 692 | $31 |
| Established Patient Complete Exam of Visual System92014 | 576 | $145 |
| Imaging of Retina92134 | 538 | $47 |
| Ultrasound Scan of Cornea to Determine Thickness76514 | 440 | $13 |
| Established Patient Problem Focused Exam of Visual System92012 | 259 | $103 |
| Exam of Visual Field With Extended Testing92083 | 163 | $74 |
| New Patient Complete Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 78 | 27 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 43 | 37 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 41 | — |
| Timolol Maleate | 24 | — |
| Bimatoprostbrand: Lumigan | 18 | — |
| Travoprost | 16 | — |
| Cyclosporinebrand: Restasis | 13 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marc Horowitz's NPI number?
- Marc Horowitz's National Provider Identifier (NPI) is 1154405173, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Horowitz's specialty?
- Marc Horowitz is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Marc Horowitz located?
- Marc Horowitz's practice location on file with NPPES is 14 Harwood Court, Scarsdale, NY 10583.
- What is Marc Horowitz's phone number?
- The practice phone number listed in the NPPES registry for Marc Horowitz is (914) 723-5511.
- Does Marc Horowitz accept Medicare?
- Marc Horowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Horowitz's NPI active?
- Yes — Marc Horowitz's NPI (1154405173) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.