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

Dr. Shannon Altazan, DO

Individual provider Emergency Medicine Physician · NPI 1477057883

Dr. Shannon Altazan, DO practises Emergency Medicine in Marietta, Ohio. Graduated from William Carey University College of Osteopathic Medicine in 2018, 8 years ago. Practices with Marietta Memorial Hospital, a 386-clinician group, works from 7 locations and accepts Medicare assignment. Licensed in Ohio and West Virginia.

Years since qualifying
8
Trained at
William Carey University College of Osteopathic Medicine
Licensed in
OH, WV
In the registry since
2018
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

401 Matthew St
Marietta, OH 45750-1635
Phone: (740) 376-1939
Fax: (740) 374-1693
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (6)

  • 206 Columbus Rd, Athens, OH 45701-1316 — (740) 885-4064
  • 1006 Washington Blvd Ste G, Belpre, OH 45714-4005 — (740) 423-3240
  • 799 Farson St, Belpre, OH 45714-1082 — (740) 401-1157
  • 224 Pike St, Marietta, OH 45750-3319 — (740) 373-3960
  • 1106 Colegate Dr, Marietta, OH 45750-1323 — (740) 568-2000
  • 800 Wheeling Ave, Glen Dale, WV 26038-1660 — (304) 843-3313

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 34.015793 (OH)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 3742 (WV)
Family Medicine Physician Taxonomy 207Q00000X · Licence 34.015793 (OH)

Record details

NPI number1477057883
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedMarch 20, 2018
Last updated in NPPESFebruary 19, 2026
Certification dateFebruary 19, 2026

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolWILLIAM CAREY UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2018 (8 years in practice)
Group practice Marietta Memorial Hospital — 386 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 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 patients432
Services billed 547 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