Warren Klein, M.D.
NPI 1114912342 · Ophthalmology Physician · Elizabeth, NJ
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Warren Klein, M.D. is a Ophthalmology Physician provider in Elizabeth, NJ (NPI 1114912342).
Provider details
- NPI number
- 1114912342
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 027381 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1,008 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) |
|---|---|---|
| Photography of the Retina92250 | 160 | $38 |
| Exam of the Internal Drainage System of Eye92020 | 121 | $30 |
| Established Patient Problem Focused Exam of Visual System92012 | 89 | $98 |
| Photography of Content of Eyes92285 | 88 | $24 |
| Imaging of Front Third of Eye Using a Special Microscope92286 | 87 | $40 |
| Established Patient Complete Exam of Visual System92014 | 77 | $136 |
| Measurement of Retinal and Optic Nerve Function |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluorometholone | 1,001 | 296 |
| Latanoprost | 515 | 137 |
| Brimonidine Tartrate | 500 | 241 |
| Timolol Maleate | 489 | 136 |
| Prednisolone Acetate | 303 | 266 |
| Dorzolamide Hcl | 266 | 80 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 198 | 49 |
| Bimatoprostbrand: Lumigan |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$99 across 6 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
- 2005-09-14
- Last updated
- 2025-06-11
- Certified
- 2025-06-11
Frequently asked questions
- What is Warren Klein's NPI number?
- Warren Klein's National Provider Identifier (NPI) is 1114912342, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Klein's specialty?
- Warren Klein is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Warren Klein located?
- Warren Klein's practice location on file with NPPES is 230 W Jersey St Fl 2, Elizabeth, NJ 07202-1364.
- What is Warren Klein's phone number?
- The practice phone number listed in the NPPES registry for Warren Klein is (908) 289-1166.
- Does Warren Klein accept Medicare?
- Warren Klein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Warren Klein's NPI active?
- Yes — Warren Klein's NPI (1114912342) is active in the NPPES registry as of the last update on 2025-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.