Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Derek Thomas Fischer, MS RD CD

Registered Dietitian in Greensburg, IN · enumerated 2018.

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

National Provider Identifier

1598266306

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Registry record

Entity type Individual (Type 1)

Name Derek Thomas Fischer

Credential MS RD CD

Sex Male

Practice address 1807 N Lincoln St, Greensburg, IN, 47240

Phone (567) 204-7699

Enumeration date Feb 27, 2018

Last updated in NPPES Feb 27, 2018

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 86082185 (IN) Primary

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 is the NPI number for Derek Fischer?

The National Provider Identifier (NPI) for Derek Fischer is 1598266306, a Type 1 (individual) record in the CMS NPPES registry.

Where does Derek Fischer practice?

The practice location on file with NPPES is in Greensburg, IN. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-27.