Karla J. Willson, NP
Nurse Practitioner · Ann Arbor, MI
Karla J. Willson, NP is a nurse practitioner with a practice address in Ann Arbor, Michigan, and NPI 1033531066, issued on Jan 10, 2014. Check the license (Michigan 4704193042, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karla J. Willson
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 4704193042 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1500 E Medical Center Dr, Ann Arbor, MI 48109
- Phone
- (734) 936-4185
- Enumerated
- Jan 10, 2014
- Record last updated
- Jan 13, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140220000426); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,574 in Michigan → Look up another NPI →
Also registered at 1500 E Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karla J. Willson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license 4704193042Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average nurse practitioner in 2024
241 Medicare Part D claims for 18 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Water37 claims
- Isradipine25 claims
- Katerzia25 claims
- Sodium Phosphate21 claims
- Famotidine20 claims
- Amlodipine Besylate16 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.
Bills Medicare through one group practice
- Regents OF The University OF MichiganAnn Arbor, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karla J. Willson among 3,574 nurse practitioner records in Michigan
Karla J. Willson, NP 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 2014, is newer than 38% of them.
- NPI issued2014 · 38% of these records are older, 57% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2012 · median 2017 among the 1,983 with a school on file
- Record last updated2014 · 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
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- Danielle Bozaan, NPAnn Arbor, MI 481091922053818
- Deborah Caplan, NPAnn Arbor, MI 481091699725721
- Tina Garcia, NPAnn Arbor, MI 481091013997659
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- Emily Marlow, NPAnn Arbor, MI 481091447293477
Common questions
What is Karla J. Willson, NP's NPI number?
Karla J. Willson, NP's National Provider Identifier (NPI) is 1033531066, issued on Jan 10, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Karla J. Willson, NP located?
The NPPES record lists a practice address at 1500 E Medical Center Dr, Ann Arbor, MI, 48109. Phone: (734) 936-4185. Providers update this record themselves, so call before visiting.
How can I verify Karla J. Willson, NP's license?
NPPES lists Michigan license number 4704193042, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.
How much does Karla J. Willson, NP prescribe under Medicare Part D?
In 2024, Karla J. Willson, NP had 241 Medicare Part D claims for 18 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.