NPPES file of Aug 9, 2026

Sophia Marie Nikolai, MS, RD, CD

Registered Dietitian · Appleton, WI

Sophia Marie Nikolai, MS, RD, CD is a registered dietitian with a practice address in Appleton, Wisconsin, and NPI 1760101638, issued on Aug 24, 2022. Check the license (Wisconsin 5009-29, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1760101638
Name
Sophia Marie Nikolai
Credential
MS, RD, CD
Primary taxonomy
Registered Dietitian 133V00000X
License number
5009-29 WI
Self-reported in NPPES; status is on the state search
Practice location
1501 S Madison St, Appleton, WI 54915
Phone
(920) 730-5423
Enumerated
Aug 24, 2022
Record last updated
Jul 9, 2025
Medicare enrollment
Enrolled (PECOS I20230119001916); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 1,457 in Wisconsin → Look up another NPI →

Also registered at 1501 S Madison St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kristin Anderson, RN,APNPNurse Practitioner1124454830
  2. Deborah Bartmann, APNPAdult Health Nurse Practitioner1619318714
  3. Debra Engebos, AUDAudiologist1457348112
  4. Lisa Esser, AUDIOLOGISTAudiologist1851331755
  5. Paige Gorges, RDNRegistered Dietitian1871202663
  6. Kristine Hanson, NPNurse Practitioner1356428767

Verify Sophia Marie Nikolai in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 5009-29    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Baycare Aurora LLCGreen Bay, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sophia Marie Nikolai among 1,457 registered dietitian records in Wisconsin

Sophia Marie Nikolai, MS, RD, CD is one of 1,457 registered dietitian records with a practice address in Wisconsin. 12% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 75% of them.

  • NPI issued2022 · 75% of these records are older, 20% newer
  • In a Medicare fileYes · 12% of these records are
  • In the CMS Doctors and Clinicians fileYes · 13% of these records are
  • Graduated2022 · median 2013 among the 182 with a school on file
  • Record last updated2025 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

48 registered dietitian records list a practice address in Appleton

They are 48 of the 3,249 NPPES records with a practice address in Appleton, and 1,457 registered dietitian records in Wisconsin.

All 1,457 in Wisconsin → Every provider in Appleton → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Marilyn Danz, RD, MS, CDAppleton, WI 549151336342203
  2. Melissa DapraAppleton, WI 549151376746321
  3. Paige Gorges, RDNAppleton, WI 549151871202663
  4. Arissa OukropAppleton, WI 549151316825805
  5. Danielle Stoffel, RD, CDAppleton, WI 549151508281296
  6. Amanda Turner, RDAppleton, WI 549151932811056
  7. Carese Walczyk, RDN, CDAppleton, WI 549151508683921
  8. Kirsten White, RDAppleton, WI 549151538778550

Common questions

What is Sophia Marie Nikolai, MS, RD, CD's NPI number?

Sophia Marie Nikolai, MS, RD, CD's National Provider Identifier (NPI) is 1760101638, issued on Aug 24, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Sophia Marie Nikolai, MS, RD, CD located?

The NPPES record lists a practice address at 1501 S Madison St, Appleton, WI, 54915. Phone: (920) 730-5423. Providers update this record themselves, so call before visiting.

How can I verify Sophia Marie Nikolai, MS, RD, CD's license?

NPPES lists Wisconsin license number 5009-29, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.