Matthew Karl, MD
NPI 1154716959 · Retina Specialist (Ophthalmology) Physician · East Setauket, NY
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Karl, MD is a Retina Specialist (Ophthalmology) Physician provider in East Setauket, NY (NPI 1154716959).
Provider details
- NPI number
- 1154716959
- Entity type
- Individual
- Primary specialty
- Retina Specialist (Ophthalmology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35135581 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 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
7,678 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) |
|---|---|---|
| Imaging of Retina92134 | 3,092 | $47 |
| Injection of Drug Into Eye67028 | 1,161 | $143 |
| Established Patient Complete Exam of Visual System92014 | 947 | $148 |
| Established Patient Problem Focused Exam of Visual System92012 | 659 | $105 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 592 | $108 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 283 | $18 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 135 | 84 |
| Ofloxacin | 88 | 72 |
| Atropine Sulfate | 30 | 26 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 27 | 20 |
| Difluprednate | 23 | 17 |
| Cyclopentolate Hcl | 21 | 17 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 20 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$131 across 2 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
- 2015-03-30
- Last updated
- 2023-01-04
- Certified
- 2023-01-04
Frequently asked questions
- What is Matthew Karl's NPI number?
- Matthew Karl's National Provider Identifier (NPI) is 1154716959, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Karl's specialty?
- Matthew Karl is listed in the NPPES registry with a primary specialty of Retina Specialist (Ophthalmology) Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Karl located?
- Matthew Karl's practice location on file with NPPES is 33 Research Way Ste 13, East Setauket, NY 11733-3489.
- What is Matthew Karl's phone number?
- The practice phone number listed in the NPPES registry for Matthew Karl is (631) 444-0650.
- Does Matthew Karl accept Medicare?
- Matthew Karl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Karl's NPI active?
- Yes — Matthew Karl's NPI (1154716959) is active in the NPPES registry as of the last update on 2023-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.