John Linn, M.D.
NPI 1902853393 · Ophthalmology Physician · Memphis, TN
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Linn, M.D. is a Ophthalmology Physician provider in Memphis, TN (NPI 1902853393).
Provider details
- NPI number
- 1902853393
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- N-8358 (AR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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
569 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) |
|---|---|---|
| Removal of Recurring Cataract in Lens Capsule Using a Laser66821 | 187 | $333 |
| Laser Repair to Improve Eye Fluid Flow65855 | 58 | $192 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 48 | $53 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 46 | $85 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 46 | $120 |
| Established Patient Complete Exam of Visual System92014 | 45 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 62 | 23 |
| Prednisolone Acetate | 46 | 39 |
| Diclofenac Sodium | 38 | 35 |
| Brimonidine Tartrate/Timololbrand: Combigan | 26 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 24 | — |
| Moxifloxacin Hclbrand: Moxifloxacin | 17 | 16 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$627 across 13 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
- 2006-05-30
- Last updated
- 2018-01-15
Frequently asked questions
- What is John Linn's NPI number?
- John Linn's National Provider Identifier (NPI) is 1902853393, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Linn's specialty?
- John Linn is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Linn located?
- John Linn's practice location on file with NPPES is 825 Ridge Lake Blvd, Memphis, TN 38120-9411.
- What is John Linn's phone number?
- The practice phone number listed in the NPPES registry for John Linn is (901) 685-2200.
- Does John Linn accept Medicare?
- John Linn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Linn's NPI active?
- Yes — John Linn's NPI (1902853393) is active in the NPPES registry as of the last update on 2018-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.