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

Individual provider Hospitalist Physician · NPI 1669581880

Joseph Alexander Mack, MD is a Hospitalist Physician in Marietta, Ohio. Practices as a sole proprietor and works from 2 locations. Licensed in Ohio.

Licensed in
OH
In the registry since
2006
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) 376-1994
Fax: (740) 374-7701
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1106 Colegate Dr, Marietta, OH 45750-1323 — (740) 374-7700

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 35.075546 (OH)
Hospitalist Physician Taxonomy 208M00000X · Licence 35075546 (OH)

Record details

NPI number1669581880
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 30, 2006
Last updated in NPPESJuly 22, 2021
Certification dateJuly 22, 2021
Mailing addressPo Box 449, Marietta, OH 45750-0449

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