Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kahlen Ralph Darr, MS, LGC

Q: What is the NPI number for Kahlen Darr?

The National Provider Identifier (NPI) for Kahlen Darr is 1235755711, a Type 1 (individual) record in the CMS NPPES registry.

Genetic Counselor (M.S.) in Rochester, MN · enumerated 2020.

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

National Provider Identifier

1235755711

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Registry record

Entity type Individual (Type 1)

Name Kahlen Ralph Darr

Credential MS, LGC

Sex Male

Practice address 200 1st St Sw, Rochester, MN, 55905

Phone (507) 284-2511

Enumeration date Jun 22, 2020

Last updated in NPPES Nov 2, 2022

Taxonomy & licenses

170300000X Genetic Counselor (M.S.) Other Service Providers Secondary

170300000X Genetic Counselor (M.S.) Other Service Providers · License 1554 (MN) Primary

170300000X Genetic Counselor (M.S.) Other Service Providers · License 74000444A (IN) Secondary

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

Where does Kahlen Darr practice?

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

What is the NPI number for Kahlen Darr?

The National Provider Identifier (NPI) for Kahlen Darr is 1235755711, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-02.