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

Stephen T Keithahn, MD

Individual provider Internal Medicine Physician · NPI 1235157827

Stephen T Keithahn, MD practises Internal Medicine in Columbia, Missouri. Graduated from Duke University School of Medicine in 1989, 37 years ago. Practices with Waimanalo Health Center, a 27-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
37
Trained at
Duke University School of Medicine
Licensed in
MO
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Partly verified

Some contact details are missing from the federal record.

One Hospital Dr
Columbia, MO 65212-0001
Phone: (573) 884-9066
Fax: (573) 884-3037
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 111583 (MO)
Internal Medicine Physician Taxonomy 207R00000X · Licence 111583 (MO)
Pediatrics Physician Taxonomy 208000000X · Licence 111583 (MO)

Record details

NPI number1235157827
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2006
Last updated in NPPESNovember 21, 2022
Certification dateNovember 21, 2022

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolDUKE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1989 (37 years in practice)
Group practice Waimanalo Health Center — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Colleagues at Waimanalo Health Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 27 clinicians in the practice; 12 are shown here.

Other providers in Columbia