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

Dr. Mary Keating Ocallaghan, DO

Individual provider Internal Medicine Physician · NPI 1558369884

Dr. Mary Keating Ocallaghan, DO is an Internal Medicine Physician in Ludington, Michigan. Licensed in Michigan. Registered with an NPI since 2005.

Licensed in
MI
In the registry since
2005
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

889 N Jebavy Dr
Ludington, MI 49431-1208
Phone: (231) 510-6877
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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 5101009391 (MI)

Record details

NPI number1558369884
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 11, 2005
Last updated in NPPESJuly 14, 2020
Certification dateJuly 14, 2020
Mailing address889 N Jebavy Dr, Ludington, MI 49431-1208

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