John Murchison, M.D.
NPI 1003898289 · Cornea and External Diseases Specialist Physician · Knoxville, TN
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Murchison, M.D. is a Cornea and External Diseases Specialist Physician provider in Knoxville, TN (NPI 1003898289).
Provider details
- NPI number
- 1003898289
- Entity type
- Individual
- Primary specialty
- Cornea and External Diseases Specialist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD25105 (TN)
Specialties & taxonomies
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
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
2,964 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 Complete Exam of Visual System92014 | 1,132 | $115 |
| Established Patient Problem Focused Exam of Visual System92012 | 425 | $81 |
| Imaging of Optic Nerve92133 | 286 | $31 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 243 | $23 |
| Exam of Visual Field With Extended Testing92083 | 224 | $57 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 131 | $483 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 854 | 202 |
| Prednisolone Acetate | 509 | 282 |
| Ofloxacin | 260 | 199 |
| Timolol Maleate | 227 | 61 |
| Brimonidine Tartrate | 227 | 69 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 128 | 101 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 113 | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$676 across 28 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
- 2005-11-15
- Last updated
- 2026-04-09
- Certified
- 2026-04-09
Frequently asked questions
- What is John Murchison's NPI number?
- John Murchison's National Provider Identifier (NPI) is 1003898289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Murchison's specialty?
- John Murchison is listed in the NPPES registry with a primary specialty of Cornea and External Diseases Specialist Physician (Allopathic & Osteopathic Physicians).
- Where is John Murchison located?
- John Murchison's practice location on file with NPPES is 4528 Chapman Hwy, Knoxville, TN 37920-4359.
- What is John Murchison's phone number?
- The practice phone number listed in the NPPES registry for John Murchison is (865) 579-3920.
- Does John Murchison accept Medicare?
- John Murchison is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Murchison's NPI active?
- Yes — John Murchison's NPI (1003898289) is active in the NPPES registry as of the last update on 2026-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.