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

Gary E Oates Jr., MD

Individual provider Emergency Medicine Physician · NPI 1518169986

Gary E Oates Jr., MD practises Emergency Medicine in Marietta, Ohio. Graduated from West Virginia University School of Medicine in 2005, 21 years ago. Practices with Marietta Memorial Hospital, a 386-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Ohio and West Virginia.

Years since qualifying
21
Trained at
West Virginia University School of Medicine
Licensed in
OH, WV
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

401 Matthew St Emergency Dept
Marietta, OH 45750-1635
Phone: (740) 376-1939
Fax: (740) 374-1693
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 799 Farson St, Belpre, OH 45714-1044 — (740) 401-1150

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 35089675 (OH)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 22629 (WV)

Record details

NPI number1518169986
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 5, 2007
Last updated in NPPESSeptember 28, 2026
Certification dateSeptember 28, 2026

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolWEST VIRGINIA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Marietta Memorial Hospital — 386 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 patients603
Services billed 854 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.

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