John Ellyn, MD
NPI 1952394330 · Specialist · Charleston, SC
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Ellyn, MD is a Specialist provider in Charleston, SC (NPI 1952394330).
Provider details
- NPI number
- 1952394330
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 11024 (SC)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 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
882 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) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 308 | $115 |
| Imaging of Optic Nerve92133 | 152 | $32 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 132 | $118 |
| Imaging of Retina92134 | 103 | $36 |
| Exam of Visual Field With Extended Testing92083 | 91 | $57 |
| Established Patient Problem Focused Exam of Visual System92012 | 25 | $82 |
| Photography of the Retina |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 383 | 130 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 125 | 40 |
| Bimatoprostbrand: Lumigan | 49 | 14 |
| Timolol Maleate | 42 | 16 |
| Dorzolamide Hcl | 30 | 12 |
| Netarsudil Mesylat/Latanoprostbrand: Rocklatan | 28 | — |
| Brimonidine Tartrate | 28 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-31
- Last updated
- 2013-09-26
Frequently asked questions
- What is John Ellyn's NPI number?
- John Ellyn's National Provider Identifier (NPI) is 1952394330, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ellyn's specialty?
- John Ellyn is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is John Ellyn located?
- John Ellyn's practice location on file with NPPES is 31 Smith St, Charleston, SC 29401-1720.
- What is John Ellyn's phone number?
- The practice phone number listed in the NPPES registry for John Ellyn is (843) 577-6506.
- Does John Ellyn accept Medicare?
- John Ellyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Ellyn's NPI active?
- Yes — John Ellyn's NPI (1952394330) is active in the NPPES registry as of the last update on 2013-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.