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Ophthalmology

Karl E. Olsen, MD

Works at hospitals in Fort Collins, CO · Colorado

Summary

Karl E. Olsen, MD (Ophthalmology) is listed by Medicare at 1 hospital in Fort Collins, CO. NPI 1275539629. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Karl E. Olsen, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

OphthalmologyPrimary specialty
YesAccepts Medicare assignment
31Years since medical school (graduated 1995)
Georgetown University School Of MedicineMedical school
MaleGender (as listed)
Eye Center of Northern Colorado PCGroup practice

Quick answers

Which hospitals does Karl E. Olsen work at?
Medicare's official clinician data lists Karl E. Olsen at 1 hospital: Poudre Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Karl E. Olsen see patients?
Medicare's clinician data lists 2 practice locations, including Fort Collins, CO and Loveland, CO. Call before your visit to confirm the address.
What is Karl E. Olsen's specialty?
Medicare lists Ophthalmology as the primary specialty.
Does Karl E. Olsen accept Medicare assignment?
Yes. Medicare's clinician data says Karl E. Olsen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Karl E. Olsen?
(970) 221-2222, as listed in official Medicare / NPI Registry data.
What is Karl E. Olsen's NPI number?
1275539629. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Karl E. Olsen works

Medicare's Facility Affiliation Data lists Karl E. Olsen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Karl E. Olsen is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Karl E. Olsen as a member of this group (CMS data updated 2026-10-02).

  • Eye Center of Northern Colorado PC71 clinicians in the group

Specialties

Find other Ophthalmology doctors in Colorado →

Other ophthalmologists in Fort Collins

Clinicians with the same Medicare primary specialty in Fort Collins, CO — not a recommendation.

All ophthalmologists in Fort Collins →

Clinician information

CredentialMD
Medical schoolGeorgetown University School Of Medicine
Graduation year1995
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1275539629
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians