Mark Hershowitz, O.D.
NPI 1275530834 · Optometrist · Watertown, NY
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Hershowitz, O.D. is a Optometrist provider in Watertown, NY (NPI 1275530834).
Provider details
- NPI number
- 1275530834
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Male
- Sole proprietor
- No
- License
- TUV007244 (NY)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,800 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,790 | $120 |
| Imaging of Optic Nerve92133 | 644 | $34 |
| Imaging of Retina92134 | 526 | $38 |
| Exam of Visual Field With Extended Testing92083 | 382 | $59 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 253 | $85 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 111 | $157 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 842 | 287 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 279 | 103 |
| Bimatoprostbrand: Lumigan | 269 | 91 |
| Timolol Maleate | 232 | 88 |
| Brimonidine Tartrate | 143 | 50 |
| Dorzolamide Hcl | 103 | 28 |
| Cyclosporine | 88 | 38 |
| Travoprost |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$471 across 24 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-28
- Last updated
- 2021-08-24
- Certified
- 2021-08-24
Frequently asked questions
- What is Mark Hershowitz's NPI number?
- Mark Hershowitz's National Provider Identifier (NPI) is 1275530834, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Hershowitz's specialty?
- Mark Hershowitz is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Mark Hershowitz located?
- Mark Hershowitz's practice location on file with NPPES is 53 Public Sq Ste 102, Watertown, NY 13601-2674.
- What is Mark Hershowitz's phone number?
- The practice phone number listed in the NPPES registry for Mark Hershowitz is (315) 681-6379.
- Does Mark Hershowitz accept Medicare?
- Mark Hershowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Hershowitz's NPI active?
- Yes — Mark Hershowitz's NPI (1275530834) is active in the NPPES registry as of the last update on 2021-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.