Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Mary Kathryn Mercer I, DO

Individual provider Internal Medicine Physician · NPI 1992807432

Dr. Mary Kathryn Mercer I, DO is an Internal Medicine Physician in Oklahoma City, Oklahoma. Practices as a sole proprietor. Licensed in Oklahoma.

Licensed in
OK
In the registry since
2006
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

5622 N Portland Ave Ste 101
Oklahoma City, OK 73112-2096
Phone: (405) 942-5513
Fax: (405) 943-1661
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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 2887 (OK)

Record details

NPI number1992807432
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedSeptember 4, 2006
Last updated in NPPESMay 15, 2008

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