Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Spencer Ollayos

Individual provider Internal Medicine Physician · NPI 1184185084

Spencer Ollayos is a Hospitalist in Fairmont, West Virginia. Graduated from Georgetown University School of Medicine in 2019, 7 years ago. Practices with West Virginia University Medical Corporation, a 1,981-clinician group and accepts Medicare assignment. Licensed in West Virginia.

Years since qualifying
7
Trained at
Georgetown University School of Medicine
Licensed in
WV
In the registry since
2019
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Practice location Address checks out

1325 Locust Ave
Fairmont, WV 26554-1435
Phone: (045) 347-8103
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 31599 (WV)

Record details

NPI number1184185084
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 25, 2019
Last updated in NPPESDecember 8, 2022
Certification dateDecember 8, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHOSPITALIST
Medical schoolGEORGETOWN UNIVERSITY SCHOOL OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice West Virginia University Medical Corporation — 1981 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients176
Services billed 407 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at West Virginia University Medical Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1981 clinicians in the practice; 12 are shown here.

Other providers in Fairmont