NPI registry status
Active
2026 NPPES data Sports Dietetics Nutrition Registered Dietitian NPI 1396427563 RD, CSSD
Verify on CMS → Marietta Parrish, RD, CSSD
Sports Dietetics Nutrition Registered Dietitian in Nashville, Tennessee.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 274 in Sports Dietetics Nutrition Registered Dietitian, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
What the federal data shows
Marietta Parrish, RD, CSSD is a Sports Dietetics Nutrition Registered Dietitian in Nashville, Tennessee, listed in the federal CMS National Provider Identifier registry.
- #398
- Sports Dietetics Nutrition Registered Dietitian rank among Tennessee specialties
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Marietta Parrish, RD, CSSD
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1396427563), first enumerated 08/07/2023.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1396427563 · Sports Dietetics Nutrition Registered Dietitian
NPI-10 · ENUM-RECENT · TAX-TRACE · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1396427563
- ENUM-RECENT 2023
- TAX-TRACE 274
- RX-NONE No Part D
- BOOK-THIN 4 in Tennessee
- PHOTO-ENUM Jordan Harris · 2023
What does the federal data show about Marietta Parrish, RD, CSSD?
Quality data not reportedPrimary specialty
Sports Dietetics Nutrition Registered Dietitian
Specialty distribution in Tennessee
How Sports Dietetics Nutrition Registered Dietitian compares to other specialties among Tennessee providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Sports Dietetics Nutrition Registered Dietitian. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1396427563 |
|---|---|
| Specialty | Sports Dietetics Nutrition Registered Dietitian |
| Credentials | RD, CSSD |
| Gender | Female |
| NPI Issued | 08/07/2023 |
Hospital and facility affiliations
Facilities where Marietta Parrish, RD, CSSD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Nourish, Inc.
Austin, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
More Sports Dietetics Nutrition Registered Dietitian in TN →
All providers in Tennessee →
Compare specialties →
Sports Dietetics Nutrition Registered Dietitian Overview
How Marietta Parrish, RD, CSSD fits within the Sports Dietetics Nutrition Registered Dietitian landscape nationally.
274
Sports Dietetics Nutrition Registered Dietitian Providers in US
41
States with Sports Dietetics Nutrition Registered Dietitian
Nationwide Sports Dietetics Nutrition Registered Dietitian peers with similar MIPS or enrollment year
Two federal-record peer sets for Parrish, both outside Tennessee so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2023)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Sports Dietetics Nutrition Registered Dietitian Providers in Tennessee
Other clinicians with the same primary specialty enrolled in Tennessee, drawn from the same CMS NPPES roster as Parrish.
One of 4 Sports Dietetics Nutrition Registered Dietitian providers enrolled in Tennessee, 3 are shown here.
Frequently Asked Questions
What is Marietta Parrish, RD, CSSD's specialty? ▼
Marietta Parrish, RD, CSSD specializes in Sports Dietetics Nutrition Registered Dietitian and practices in Nashville, Tennessee. Credentials: RD, CSSD.
Where is Marietta Parrish, RD, CSSD located? ▼
Marietta Parrish, RD, CSSD is located at 3619B MAYFLOWER PL, Nashville, TN, 37204. Phone: (615) 496-2029.
What is Marietta Parrish, RD, CSSD's NPI number? ▼
Marietta Parrish, RD, CSSD's National Provider Identifier (NPI) is 1396427563, issued on 08/07/2023.
How many Sports Dietetics Nutrition Registered Dietitian providers are there in the US? ▼
There are 274 Sports Dietetics Nutrition Registered Dietitian providers across 41 states in the US.
Does Marietta Parrish, RD, CSSD accept Medicare? ▼
Marietta Parrish, RD, CSSD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marietta Parrish, RD, CSSD's credentials? ▼
Marietta Parrish, RD, CSSD's NPI is 1396427563 with credentials RD, CSSD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.