Karen S. Underhill, ANP-C
Nurse Practitioner · Ann Arbor, MI
Karen S. Underhill, ANP-C is a nurse practitioner with a practice address in Ann Arbor, Michigan, and NPI 1679590285, issued on Jul 17, 2006. Check the license (Michigan 4704146521, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen S. Underhill
- Credential
- ANP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 4704146521 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1200 Earhart RD, Ann Arbor, MI 48105
- Phone
- (734) 769-0177
- Enumerated
- Jul 17, 2006
- Record last updated
- Feb 9, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,574 in Michigan → Look up another NPI →
Also registered at 1200 Earhart RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kristie Brogan, OTR/LOccupational Therapist1083192512
Verify Karen S. Underhill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704146521Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average nurse practitioner in 2024
724 Medicare Part D claims for 143 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium31 claims
- Amlodipine Besylate24 claims
- Omeprazole24 claims
- Gabapentin23 claims
- Lisinopril23 claims
- Escitalopram Oxalate22 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Karen S. Underhill among 3,574 nurse practitioner records in Michigan
Karen S. Underhill, ANP-C is one of 3,574 nurse practitioner records with a practice address in Michigan. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 84% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 56% of these records are
- Record last updated2015 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
704 nurse practitioner records list a practice address in Ann Arbor
They are 704 of the 15,616 NPPES records with a practice address in Ann Arbor, and 3,574 nurse practitioner records in Michigan.
All 3,574 in Michigan → Every provider in Ann Arbor → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Terri Arthur, AHP, NPAnn Arbor, MI 481051538475546
- Karen Burek, NPAnn Arbor, MI 481051134346216
- Kimberlee Buzenberg, NPAnn Arbor, MI 481051982712196
- Jennifer Dubnicki, NPAnn Arbor, MI 481051437214921
- Bryan Facione, ACNPAnn Arbor, MI 481051538477005
- Douglas Fowler, FNPAnn Arbor, MI 481051346268976
- Michele Gargan, NPAnn Arbor, MI 481051568567154
- Susan Hughes, NPAnn Arbor, MI 481051801016514
Common questions
What is Karen S. Underhill, ANP-C's NPI number?
Karen S. Underhill, ANP-C's National Provider Identifier (NPI) is 1679590285, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen S. Underhill, ANP-C located?
The NPPES record lists a practice address at 1200 Earhart RD, Ann Arbor, MI, 48105. Phone: (734) 769-0177. Providers update this record themselves, so call before visiting.
How can I verify Karen S. Underhill, ANP-C's license?
NPPES lists Michigan license number 4704146521, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Karen S. Underhill, ANP-C prescribe under Medicare Part D?
In 2024, Karen S. Underhill, ANP-C had 724 Medicare Part D claims for 143 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.