Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Maples, RD

Registered Dietitian in Willits, CA · enumerated 2021.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1891450698

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Registry record

Entity type Individual (Type 1)

Name Mark A Maples

Credential RD

Sex Male

Practice address 3 Marcela Dr, Willits, CA, 95490

Phone (707) 456-3035

Enumeration date Nov 5, 2021

Last updated in NPPES Nov 5, 2021

Taxonomy & licenses

133VN1201X Obesity and Weight Management Nutrition Registered Dietitian Dietary & Nutritional Service Providers Secondary

133VN1501X Sports Dietetics Nutrition Registered Dietitian Dietary & Nutritional Service Providers Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers Primary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Mark Maples?

Mark Maples is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-05.