NPPES file of Aug 9, 2026

Sara Mattillion, RDN, LDN

Registered Dietitian · Rockford, IL

Sara Mattillion, RDN, LDN is a registered dietitian with a practice address in Rockford, Illinois, and NPI 1336758903, issued on Jul 29, 2020. Check the license with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1336758903
Name
Sara Mattillion
Credential
RDN, LDN
Primary taxonomy
Registered Dietitian 133V00000X
Practice location
930 Winthrop LN, Rockford, IL 61107
Phone
(708) 567-3763
Enumerated
Jul 29, 2020
Record last updated
Jul 29, 2020 (not updated in 6 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Sara Mattillion in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck 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
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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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Registered Dietitian providers in Illinois

There are 2,870 registered dietitian records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 2,870 in Illinois → Every provider in Rockford →

Other registered dietitian records in Illinois

  1. Taylor Aarns, RDNBelleville, IL1295475820
  2. Rebecca Abbatiello, RDWheaton, IL1437460748
  3. Heba Abdel Latief, RDNChicago, IL1821554593
  4. Duaa AbdullahBridgeview, IL1851253009
  5. Leen Abdulqader, RDBridgeview, IL1689372526
  6. Abdullah AbdulwahidPlainfield, IL1417880980
  7. Priscilla Abel Paul, RDNBement, IL1215782941
  8. Kathleen Abernathy, R.D., L.D.N.Lake Forest, IL1295020063
  9. Patricia AbernathyLa Grange, IL1063174837
  10. Michael Abromaitis, RDNSkokie, IL1710402797

Common questions

What is Sara Mattillion, RDN, LDN's NPI number?

Sara Mattillion, RDN, LDN's National Provider Identifier (NPI) is 1336758903, issued on Jul 29, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Sara Mattillion, RDN, LDN located?

The NPPES record lists a practice address at 930 Winthrop LN, Rockford, IL, 61107. Phone: (708) 567-3763. Providers update this record themselves, so call before visiting.

How can I verify Sara Mattillion, RDN, LDN's license?

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. 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.