Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mary Katherine Mark, MS, MPH, RD, LD/N

Registered Dietitian in Miami Beach, FL · enumerated 2019.

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

National Provider Identifier

1356901433

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Registry record

Entity type Individual (Type 1)

Name Mary Katherine Mark

Credential MS, MPH, RD, LD/N

Sex Female

Practice address Miami Beach, FL, 33139

Phone (305) 469-1416

Enumeration date Jun 19, 2019

Last updated in NPPES Jun 19, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 8875 (FL) 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

Is NPI 1356901433 active?

Yes, as of the latest NPPES snapshot, NPI 1356901433 is active (record last updated 2019-06-19).

How do I verify Mary Mark's NPI record?

Cross-check NPI 1356901433 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-19.