Janna S. Baker, NP
Nurse Practitioner · Eau Claire, WI
Janna S. Baker, NP is a nurse practitioner with a practice address in Eau Claire, Wisconsin, and NPI 1831401942, issued on Jul 6, 2010. Check the license (Wisconsin 4358-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Janna S. Baker
- Credential
- NP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 4358-33 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Whipple St, Eau Claire, WI 54703
- Phone
- (715) 838-5222
- Enumerated
- Jul 6, 2010
- Record last updated
- Sep 11, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130325000514); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1221 Whipple St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrea Anderson, CRNACertified Registered Nurse Anesthetist1033101894
- Charlene Anderson, APNPNurse Practitioner1194057752
- Gwen Anderson, CRNACertified Registered Nurse Anesthetist1316103369
- Hailee Anderson, CRNACertified Registered Nurse Anesthetist1598453425
Verify Janna S. Baker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 4358-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average nurse practitioner in 2024
164 Medicare Part D claims for 35 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 94 claims were for opioids.
Most prescribed
- Morphine Sulfate30 claims
- Hydrocodone-Acetaminophen19 claims
- Lidocaine Hcl Viscous13 claims
- Oxycodone Hcl13 claims
- Buprenorphine12 claims
- Bupropion Hcl11 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
- Mayo Clinic Health System-Northwest Wisconsin Region IncEau Claire, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
184 nurse practitioner records list a practice address in Eau Claire
They are 184 of the 3,085 NPPES records with a practice address in Eau Claire, and 3,995 nurse practitioner records in Wisconsin.
All 184 in Eau Claire → All 3,995 in Wisconsin → Every provider in Eau Claire →
Other nurse practitioner records in Wisconsin
- Caroline Aaberg, APNPMadison, WI1881384394
- Joyce Abbott, APNPOshkosh, WI1003824665
- Mohamed Abdelazim, APNPAppleton, WI1760266696
- Jacklyn Abel, AGACNP-BCMauston, WI1104631506
- Henrietta Abili, APNPGermantown, WI1174859524
- Jade Abts, NPGreen Bay, WI1992293708
- Karalyn Adam, DNP, RNMarshfield, WI1780933051
- Carol Adamczyk, MSNWauwatosa, WI1457502395
- Amanda Adams, NPMadison, WI1023366598
- Bernadette Adams, FNPWestby, WI1427047620
Common questions
What is Janna S. Baker, NP's NPI number?
Janna S. Baker, NP's National Provider Identifier (NPI) is 1831401942, issued on Jul 6, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Janna S. Baker, NP located?
The NPPES record lists a practice address at 1221 Whipple St, Eau Claire, WI, 54703. Phone: (715) 838-5222. Providers update this record themselves, so call before visiting.
How can I verify Janna S. Baker, NP's license?
NPPES lists Wisconsin license number 4358-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Janna S. Baker, NP prescribe under Medicare Part D?
In 2024, Janna S. Baker, NP had 164 Medicare Part D claims for 35 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.