NPPES file of Aug 9, 2026

Marissa Hewitt, RDN

Registered Dietitian · Clarksville, TN

Marissa Hewitt, RDN is a registered dietitian with a practice address in Clarksville, Tennessee, and NPI 1871481564, issued on Jun 24, 2025. Check the license with the Tennessee 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
1871481564
Name
Marissa Hewitt
Credential
RDN
Primary taxonomy
Registered Dietitian 133V00000X
Practice location
1197 Belvoir LN, Clarksville, TN 37040
Phone
(734) 546-6622
Enumerated
Jun 24, 2025
Record last updated
Jun 24, 2025
Medicare enrollment
Enrolled (PECOS I20250909003731); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 1,266 in Tennessee → Look up another NPI →

Verify Marissa Hewitt in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Tennessee 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
Find the Tennessee 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. Mnt, Inc.Bowling Green, KY

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

Marissa Hewitt among 1,266 registered dietitian records in Tennessee

Marissa Hewitt, RDN is one of 1,266 registered dietitian records with a practice address in Tennessee. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 83% of them.

  • NPI issued2025 · 83% of these records are older, 6% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 9% of these records are
  • Graduated2017 · median 2014 among the 117 with a school on file
  • Record last updated2025 · 50% 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 Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Registered Dietitian providers in Tennessee

There are 1,266 registered dietitian records in Tennessee.

All 1,266 in Tennessee → Every provider in Clarksville → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Margaret Martin, RD, MS, CDE, LDNClarksville, TN 370401184795668
  2. Caitlynn Poynter, RDN, LDN, CDCESClarksville, TN 370401063041010
  3. Alyssa Poythress, RDNClarksville, TN 370401003621426
  4. Amy Ryan, MS, RD, LDClarksville, TN 370401730674094
  5. Sa'Nealdra Wiggins, RDNClarksville, TN 370401699650747
  6. Tabitha Pooler, RDNClarksville, TN 370421689416364
  7. Jenna-Lee Van Tonder, RDNClarksville, TN 370421831975770
  8. Victoria Biles, RD, LDChristiana, TN 370371083909717

Common questions

What is Marissa Hewitt, RDN's NPI number?

Marissa Hewitt, RDN's National Provider Identifier (NPI) is 1871481564, issued on Jun 24, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Marissa Hewitt, RDN located?

The NPPES record lists a practice address at 1197 Belvoir LN, Clarksville, TN, 37040. Phone: (734) 546-6622. Providers update this record themselves, so call before visiting.

How can I verify Marissa Hewitt, RDN's license?

Search the Tennessee 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.