Vishak John, M.D.
NPI 1255515623 · Ophthalmology Physician · Winston Salem, NC
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vishak John, M.D. is a Ophthalmology Physician provider in Winston Salem, NC (NPI 1255515623).
Provider details
- NPI number
- 1255515623
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 002830 (GA)
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
18 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
8,450 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 | 3,343 | $39 |
| Established Patient Complete Exam of Visual System92014 | 2,318 | $121 |
| Injection of Drug Into Eye67028 | 2,258 | $125 |
| Exam of Retinal Blood Vessels Using a Special Camera After Injection of a Dye92235 | 220 | $153 |
| New Patient Complete Exam of Visual System92004 | 82 | $142 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 52 | $161 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 143 | 101 |
| Ofloxacin | 77 | 72 |
| Ketorolac Tromethamine | 58 | 26 |
| Timolol Maleate | 48 | 13 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 41 | 19 |
| Brimonidine Tartrate | 19 | — |
| Erythromycin Basebrand: Erythromycin | 18 | 18 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$40,296 across 61 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
- 2007-12-20
- Last updated
- 2016-09-26
Frequently asked questions
- What is Vishak John's NPI number?
- Vishak John's National Provider Identifier (NPI) is 1255515623, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vishak John's specialty?
- Vishak John is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Vishak John located?
- Vishak John's practice location on file with NPPES is Medical Center Blvd, Winston Salem, NC 27157-0001.
- What is Vishak John's phone number?
- The practice phone number listed in the NPPES registry for Vishak John is (336) 716-4091.
- Does Vishak John accept Medicare?
- Vishak John is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vishak John's NPI active?
- Yes — Vishak John's NPI (1255515623) is active in the NPPES registry as of the last update on 2016-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.