Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Karen S Underhill, ANP-C

Individual provider Nurse Practitioner · NPI 1679590285

Karen S Underhill, ANP-C is a Nurse Practitioner in Ann Arbor, Michigan. Licensed in Michigan. Registered with an NPI since 2006.

Licensed in
MI
In the registry since
2006
Specialties on file
2
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Practice location Address checks out

1200 Earhart Rd
Ann Arbor, MI 48105-2768 Not confirmed with CMS for 11 years — call before visiting
Phone: (734) 769-0177
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 4704146521 (MI)
Adult Health Nurse Practitioner Taxonomy 363LA2200X · Licence 4704146521 (MI)

Record details

NPI number1679590285
Entity typeIndividual (Type 1)
GenderFemale
Credentials ANP-C
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESFebruary 9, 2015

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 patients161
Services billed 333 a service is one billed item, such as a visit, a test or a procedure
Average patient age80

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.

Other providers in Ann Arbor