Emily K. Armstrong, MD

Medicare activity in 2024

Official CMS public-use data for Emily K. Armstrong, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)450 services
2. Established patient complete exam of visual system (92014)238 services
3. Removal of cataract with insertion of prosthetic lens (66984)209 services
4. Measurement of corneal curvature and depth of eye (92136)206 services
5. Imaging of retina (92134)150 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure74%
• High cholesterol71%
• Arthritis47%
• Diabetes27%
• Chronic kidney disease26%
• Ischemic heart disease19%

Hospitals where Emily K. Armstrong works

Medicare's Facility Affiliation Data lists Emily K. Armstrong at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Mercy Medical CenterRoseburg, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380027

Practice locations

Addresses where Emily K. Armstrong is enrolled with Medicare (CMS data updated October 2, 2026).

• 341 NW Medical Loop, Suite 120Roseburg, OR 97471 (541) 672‑8288

Group practices

Medicare enrollment lists Emily K. Armstrong as a member of these groups (CMS data updated October 2, 2026).

• Centennial Medical Group Inc59 clinicians in the group
• Umpqua Valley Eye Associates LLC3 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in Oregon →

Other ophthalmologists in Roseburg

Clinicians with the same Medicare primary specialty in Roseburg, OR — not a recommendation.

• Alexander S. Willoughby, MD
• Andrea V. Gray, MD
• John A. Billingsley, MD

All ophthalmologists in Roseburg →

Other clinicians in Centennial Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Brent A. Crane, MD
• Alexander S. Willoughby, MD
• Mohahhed Halabiya
• Ciril Khorolsky, MD
• Lawrence E. Vallario, MD
• Christopher R. Spence, MD

Clinician information

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 October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians