Spencer K. Ollayos, MD

Medicare activity in 2024

Official CMS public-use data for Spencer K. Ollayos, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)179 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)72 services
3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)57 services
4. Hospital discharge day management, more than 30 minutes (99239)26 services
5. Hospital discharge day management, 30 minutes or less (99238)25 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 pressure75%
• High cholesterol75%
• Arthritis69%
• Ischemic heart disease61%
• Diabetes54%
• Chronic kidney disease53%

Hospitals where Spencer K. Ollayos works

Medicare's Facility Affiliation Data lists Spencer K. Ollayos 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.

• Berkeley Medical CenterMartinsburg, WV · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 510008
• West Virginia University Hospitals, IncMorgantown, WV · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 510001

Practice locations

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

• 1325 Locust AveFairmont, WV 26554 (304) 366‑9999

Group practices

Medicare enrollment lists Spencer K. Ollayos as a member of this group (CMS data updated October 2, 2026).

• West Virginia University Medical Corporation1,980 clinicians in the group

Specialties

• Hospitalistprimary

Find other Hospitalist doctors in West Virginia →

Other hospitalists in West Virginia

Clinicians with the same Medicare primary specialty in West Virginia — not a recommendation.

• Dana L. Murray, MD
• Sanniya Anaum, MD
• Elizabeth P. Lane, DO
• Despina Poulos, MD
• Andrew D. Myers, MD
• Deo Mulindwa, MD
• Vipin D. Villgran, MD
• Ryan Reinbeau, DO

All hospitalists in West Virginia →

Other clinicians in West Virginia University Medical Corporation

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

• Andrea Labus, MD
• Tien Nguyen, MD
• Angela J. Smolarz, MD
• Michael Gumpf, CNA
• Steven W. Coutras, MD
• Kristina Peron

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