NPPES file of Aug 9, 2026

Mary Jo Winkenwerder, RD, LD

Registered Dietitian · Woodstock, IL

Mary Jo Winkenwerder, RD, LD is a registered dietitian with a practice address in Woodstock, Illinois, and NPI 1437522810, issued on Nov 5, 2015. Check the license (Illinois 164.004498, as entered in NPPES) with the Illinois 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
1437522810
Name
Mary Jo Winkenwerder
Credential
RD, LD
Primary taxonomy
Registered Dietitian 133V00000X
License number
164.004498 IL
Self-reported in NPPES; status is on the state search
Practice location
2000 Lake Ave, Woodstock, IL 60098
Phone
(815) 337-7100
Enumerated
Nov 5, 2015
Record last updated
Jan 22, 2024
Fax
(815) 337-4793
Medicare enrollment
Enrolled (PECOS I20240201003417); 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 2,870 in Illinois → Look up another NPI →

Also registered at 2000 Lake Ave

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

  1. Napoleon Abando, MDFamily Medicine Physician1003972753
  2. Jeffrey Altman, MDDermatology Physician1831166958
  3. Jeffrey Bagdon, DOFamily Medicine Physician1518987528
  4. Matthew Banks, PTAPhysical Therapy Assistant1417456476
  5. Douglas Bryan, MDVascular Surgery Physician1285743955
  6. Stephanie Bui, DOPediatrics Physician1285196733

Verify Mary Jo Winkenwerder in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 164.004498    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 Illinois 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. Mercy Health System CorporationJanesville, WI

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

Mary Jo Winkenwerder among 2,870 registered dietitian records in Illinois

Mary Jo Winkenwerder, RD, LD is one of 2,870 registered dietitian records with a practice address in Illinois. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 38% of them.

  • NPI issued2015 · 38% of these records are older, 57% newer
  • In a Medicare fileYes · 8% of these records are
  • In the CMS Doctors and Clinicians fileYes · 9% of these records are
  • Graduated1995 · median 2014 among the 269 with a school on file
  • Record last updated2024 · 59% 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 Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

6 registered dietitian records list a practice address in Woodstock

They are 6 of the 511 NPPES records with a practice address in Woodstock, and 2,870 registered dietitian records in Illinois.

All 2,870 in Illinois → Every provider in Woodstock → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Angela Mack, RDWoodstock, IL 600981902991078
  2. Jacob MiceliWoodstock, IL 600981649029240
  3. Stacia Riffe, MS,RD,LDNWoodstock, IL 600981275906877
  4. Tiffanie Young, MS, RD, LDNWoodstock, IL 600981982836789
  5. Jesell Zepeda, RDWoodstock, IL 600981083232680
  6. Sadie Dahlk, RDZion, IL 600991932686482
  7. Julia Fechtner, RDZion, IL 600991912486135
  8. Amy Gholston, MS, RD, CSO, CNSCZion, IL 600991346726510

Common questions

What is Mary Jo Winkenwerder, RD, LD's NPI number?

Mary Jo Winkenwerder, RD, LD's National Provider Identifier (NPI) is 1437522810, issued on Nov 5, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Mary Jo Winkenwerder, RD, LD located?

The NPPES record lists a practice address at 2000 Lake Ave, Woodstock, IL, 60098. Phone: (815) 337-7100. Providers update this record themselves, so call before visiting.

How can I verify Mary Jo Winkenwerder, RD, LD's license?

NPPES lists Illinois license number 164.004498, as entered by the provider. Search the Illinois 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.