NPPES file of Aug 9, 2026

Mary-Kate Nelson, RDN, LDN

Registered Dietitian · Butler, PA

Mary-Kate Nelson, RDN, LDN is a registered dietitian with a practice address in Butler, Pennsylvania, and NPI 1558933622, issued on Jul 16, 2021. Check the license with the Pennsylvania 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
1558933622
Name
Mary-Kate Nelson
Credential
RDN, LDN
Primary taxonomy
Registered Dietitian 133V00000X
Practice location
353 N Duffy RD, Butler, PA 16001
Phone
(800) 036-2826
Enumerated
Jul 16, 2021
Record last updated
Jul 16, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20250722001179); 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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Also registered at 353 N Duffy RD

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

  1. Paul AbbottMedical Physician Assistant1114903093
  2. Diego Araujo, LCSWClinical Social Worker1013611144
  3. Emily Beahm, LCSWClinical Social Worker1295607075
  4. Cheryl CaporaliRegistered Nurse1659239168
  5. Jessica Carpenter-Brittner, RNGeneral Practice Registered Nurse1942926050
  6. John Casteel, CRNP, DNP-FNPFamily Nurse Practitioner1477108280

Verify Mary-Kate Nelson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Pennsylvania 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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Bills Medicare through one group practice

  1. NO Diet Dietitian LLCBurlington, VT

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

23 registered dietitian records list a practice address in Butler

They are 23 of the 1,139 NPPES records with a practice address in Butler, and 3,083 registered dietitian records in Pennsylvania.

Other registered dietitian records in Pennsylvania

  1. Andrea Abbe, LDNHershey, PA1366623795
  2. Danielle AbermanMalvern, PA1003272188
  3. Nora AbrahamHorsham, PA1346093614
  4. Christina Abriola, R.D.Pittsburgh, PA1356647507
  5. Melissa Accardi, MS, RD, LDNPittsburgh, PA1336768951
  6. Marie AceboLancaster, PA1053347757
  7. Jennifer Acevedo, RDAllentown, PA1538532882
  8. Emily Achey, MS, RDNewmanstown, PA1730724360
  9. Jami Ackerman, RDN LDNEnola, PA1790717924
  10. Rachel Ackley, RDN, LDNAllentown, PA1003589300

Common questions

What is Mary-Kate Nelson, RDN, LDN's NPI number?

Mary-Kate Nelson, RDN, LDN's National Provider Identifier (NPI) is 1558933622, issued on Jul 16, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Mary-Kate Nelson, RDN, LDN located?

The NPPES record lists a practice address at 353 N Duffy RD, Butler, PA, 16001. Phone: (800) 036-2826. Providers update this record themselves, so call before visiting.

How can I verify Mary-Kate Nelson, RDN, LDN's license?

Search the Pennsylvania 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.

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.