NPPES file of Aug 9, 2026

Olivia Allen Simmons, RD, LDN

Registered Dietitian · Nashville, TN

Olivia Allen Simmons, RD, LDN is a registered dietitian with a practice address in Nashville, Tennessee, and NPI 1598440422, issued on Jun 19, 2023. Check the license (Tennessee 3164, as entered in NPPES) 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
1598440422
Name
Olivia Allen Simmons
Credential
RD, LDN
Primary taxonomy
Registered Dietitian 133V00000X
License number
3164 TN
Self-reported in NPPES; status is on the state search
Practice location
2002 Eastland Ave Ste 101, Nashville, TN 37206
Phone
(615) 697-9355
Enumerated
Jun 19, 2023
Record last updated
Jun 19, 2023
Fax
(615) 334-0867
Medicare enrollment
Enrolled (PECOS I20250321001671); may accept 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 1,266 in Tennessee → Look up another NPI →

Also registered at 2002 Eastland Ave Ste 101

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

  1. Sunni Brimsy, LMSWSocial Worker1336878065
  2. Lori Brown, RDNRegistered Dietitian1730740234
  3. Melissa Brown, MPH, CHES, RD, LDRegistered Dietitian1790336048
  4. Holly Darnell, RD, LDNRegistered Dietitian1336621390
  5. Zadie Harlow, LCSWClinical Social Worker1164167219
  6. Kaitlyn Kownacki, RDN, LDNRegistered Dietitian1184275372

Verify Olivia Allen Simmons in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
    Search for license 3164    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 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. Nashville Nutrition PartnersNashville, TN

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

Olivia Allen Simmons among 1,266 registered dietitian records in Tennessee

Olivia Allen Simmons, RD, LDN 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 2023, is newer than 70% of them.

  • NPI issued2023 · 70% of these records are older, 23% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 9% of these records are
  • Graduated2014 · median 2014 among the 117 with a school on file
  • Record last updated2023 · 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).

284 registered dietitian records list a practice address in Nashville

They are 284 of the 24,357 NPPES records with a practice address in Nashville, and 1,266 registered dietitian records in Tennessee.

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

The 8 registered dietitian records with the nearest ZIP codes

  1. Reeta Bandyopadhyay, MS, RDNNashville, TN 372061720655699
  2. Lori Brown, RDNNashville, TN 372061730740234
  3. Melissa Brown, MPH, CHES, RD, LDNashville, TN 372061790336048
  4. Holly Darnell, RD, LDNNashville, TN 372061336621390
  5. Emily Haddock, RD, LDNNashville, TN 372061770174518
  6. Chelsea Jones, RDNNashville, TN 372061528604881
  7. Kaitlyn Kownacki, RDN, LDNNashville, TN 372061184275372
  8. Kathryn McWaters, RDN, LDNNashville, TN 372061598499501

Common questions

What is Olivia Allen Simmons, RD, LDN's NPI number?

Olivia Allen Simmons, RD, LDN's National Provider Identifier (NPI) is 1598440422, issued on Jun 19, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Olivia Allen Simmons, RD, LDN located?

The NPPES record lists a practice address at 2002 Eastland Ave Ste 101, Nashville, TN, 37206. Phone: (615) 697-9355. Providers update this record themselves, so call before visiting.

How can I verify Olivia Allen Simmons, RD, LDN's license?

NPPES lists Tennessee license number 3164, as entered by the provider. 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.