Landon Karren, D.O.
NPI 1518212893 · Ophthalmology Physician · Grand Forks, ND
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Landon Karren, D.O. is a Ophthalmology Physician provider in Grand Forks, ND (NPI 1518212893).
Provider details
- NPI number
- 1518212893
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- DO176816 (OR)
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
13 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
1,138 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 | 271 | $124 |
| Imaging of Retina92134 | 210 | $39 |
| Injection of Drug Into Eye67028 | 161 | $122 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 99 | $126 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 73 | $17 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 |
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 |
|---|---|---|
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 99 | 69 |
| Latanoprost | 73 | 20 |
| Timolol Maleate | 29 | — |
| Cyclosporinebrand: Restasis | 21 | — |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 15 | — |
| Prednisolone Acetate | 15 | 15 |
| Cephalexin | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$297 across 11 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
- 2012-07-23
- Last updated
- 2019-08-16
Frequently asked questions
- What is Landon Karren's NPI number?
- Landon Karren's National Provider Identifier (NPI) is 1518212893, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Landon Karren's specialty?
- Landon Karren is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Landon Karren located?
- Landon Karren's practice location on file with NPPES is 4440 S Washington St - Altru Professional Center, Grand Forks, ND 58201-7245.
- What is Landon Karren's phone number?
- The practice phone number listed in the NPPES registry for Landon Karren is (701) 732-7000.
- Does Landon Karren accept Medicare?
- Landon Karren is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Landon Karren's NPI active?
- Yes — Landon Karren's NPI (1518212893) is active in the NPPES registry as of the last update on 2019-08-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.