What is Sierra Loncki's NPI number?

Sierra Loncki's National Provider Identifier (NPI) is 1679209498, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sierra Loncki's specialty?

Sierra Loncki is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).

Where is Sierra Loncki located?

Sierra Loncki's practice location on file with NPPES is 1836 South Ave, La Crosse, WI 54601-5429.

What is Sierra Loncki's phone number?

The practice phone number listed in the NPPES registry for Sierra Loncki is (608) 783-7200.

Is Sierra Loncki's NPI active?

Yes — Sierra Loncki's NPI (1679209498) is active in the NPPES registry as of the last update on 2026-05-04.

IndividualActive

Sierra Loncki, RDN

NPI 1679209498 · Registered Dietitian · La Crosse, WI

Sierra Loncki, RDN is a Registered Dietitian provider in La Crosse, WI (NPI 1679209498).

Provider details

NPI number: 1679209498
Entity type: Individual
Primary specialty: Registered DietitianDietary & Nutritional Service Providers
Credential: RDN
Sex: Female
Sole proprietor: No
License: 5004 (WI)

Specialties & taxonomies

Registered DietitianPrimary133V00000XLicense 5004 (WI)
Dietary & Nutritional Service Providers

Profile Score

Established profile(60/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
3 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

1836 South Ave

La Crosse, WI 54601-5429

Phone: (608) 783-7200

Street-level locationGet directions

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Mailing address