Stephen Cassis, MD
NPI 1093709289 · Ophthalmology Physician · Charleston, WV
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Cassis, MD is a Ophthalmology Physician provider in Charleston, WV (NPI 1093709289).
Provider details
- NPI number
- 1093709289
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 12950 (WV)
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
2,234 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 424 | $84 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 370 | $35 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 344 | $437 |
| Established Patient Complete Exam of Visual System92014 | 209 | $112 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 192 | $156 |
| Imaging of Retina92134 | 141 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,293 | 348 |
| Prednisolone Acetate | 1,003 | 696 |
| Ketorolac Tromethamine | 669 | 486 |
| Ofloxacin | 536 | 445 |
| Timolol Maleate | 379 | 126 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 369 | 108 |
| Brimonidine Tartrate | 289 | 98 |
| Dorzolamide Hcl | 148 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$464 across 9 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
- 2005-09-02
- Last updated
- 2011-02-24
Frequently asked questions
- What is Stephen Cassis's NPI number?
- Stephen Cassis's National Provider Identifier (NPI) is 1093709289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Cassis's specialty?
- Stephen Cassis is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Cassis located?
- Stephen Cassis's practice location on file with NPPES is 301 49th St Se, Charleston, WV 25304-1909.
- What is Stephen Cassis's phone number?
- The practice phone number listed in the NPPES registry for Stephen Cassis is (304) 925-3937.
- Does Stephen Cassis accept Medicare?
- Stephen Cassis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Cassis's NPI active?
- Yes — Stephen Cassis's NPI (1093709289) is active in the NPPES registry as of the last update on 2011-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.