Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Corey Alley, MD

Individual provider Hospitalist Physician · NPI 1366020968

Dr. Corey Alley, MD practises Internal Medicine in Marietta, Ohio. Qualified in 2021, 5 years ago. Practices with Marietta Memorial Hospital, a 386-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
5
Licensed in
OH
In the registry since
2021
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

401 Matthew St
Marietta, OH 45750-1635
Phone: (740) 374-7700
Fax: (740) 374-7701
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 1106 Colegate Dr, Marietta, OH 45750-1323 — (740) 374-7700
  • 1600 Medical Center Dr, Huntington, WV 25701-3656 — (304) 691-1824
  • 1600 Medical Center Dr, Huntington, WV 25701-3656 — (304) 691-1824

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 35.150523 (OH)
Hospitalist Physician Taxonomy 208M00000X · Licence 35.150523 (OH)

Record details

NPI number1366020968
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 2, 2021
Last updated in NPPESApril 16, 2024
Certification dateApril 16, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Marietta Memorial Hospital — 386 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 patients162
Services billed 314 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Colleagues at Marietta Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 386 clinicians in the practice; 12 are shown here.

Other providers in Marietta