Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CRYSTAL LYNN ARNSON DNP, APRN, WHNP-BC
NPI 1720691645
Nurse Practitioner - Women's Health in Williston, ND

Q: What is Crystal Arnson's NPI number?

The NPI number for Crystal Arnson is 1720691645. It was assigned to this individual provider in the NPPES registry on August 29, 2020. The provider is also known as Crystal Lynn Lesmeister Dnp, Aprn, Whnp-Bc.

Q: What is Crystal Arnson's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Women's Health, with taxonomy code 363LW0102X.

Q: When was this NPI record last updated?

The NPPES record for Crystal Arnson was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since August 29, 2020

110 W BROADWAY STE 101, WILLISTON, ND 58801(701) 774-6400(701) 577-8536 Get Directions Write a Review

NPPES record last updated: October 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 15, 2026, May 18, 2021, Aug 29, 2020 (3 updates tracked since 2020).

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About Crystal Lynn Arnson Dnp, Aprn, Whnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CRYSTAL LYNN ARNSON DNP, APRN, WHNP-BC (NPI 1720691645) is an individual women's health provider in Williston, North Dakota, licensed in North Dakota (R39631) and active in the NPI registry since August 2020.

NPPES Registry Identity

NPI1720691645

Entity TypeIndividualFemale

Primary Taxonomy363LW0102X

Provider Legal NameCRYSTAL LYNN ARNSONCredential: DNP, APRN, WHNP-BC

Location Address110 W BROADWAY STE 101Williston, ND 58801-6056

Mailing Address13986 51st St NwWilliston, ND 58801-9004 · (763) 248-3340 · Fax (701) 577-8536

Phone(701) 774-6400

Fax(701) 577-8536

Sole ProprietorNo

Enumeration DateAugust 29, 2020

Last NPPES UpdateOctober 15, 20263 updates tracked since enumeration

NPPES CertifiedOctober 15, 2026

✔ NPI 1720691645 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Women's HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LW0102X

License✔ Licensed in ND · R39631

110 W BROADWAY STE 101, Williston, ND 58801

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Other Names 1

Former Name (1)Crystal Lynn Lesmeister Dnp, Aprn, Whnp-bc

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of North Dakota, Sanford Health Plan.Insurance ›

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Crystal Arnson's NPI number?

The NPI number for Crystal Arnson is 1720691645. It was assigned to this individual provider in the NPPES registry on August 29, 2020. The provider is also known as Crystal Lynn Lesmeister Dnp, Aprn, Whnp-Bc.

Where is Crystal Arnson located?

Crystal Arnson practices at 110 W Broadway Ste 101, Williston, ND 58801. The listed phone number is (701) 774-6400.

What is Crystal Arnson's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Women's Health, with taxonomy code 363LW0102X.

What insurance does Crystal Arnson accept?

Health plans from Blue Cross Blue Shield of North Dakota and Sanford Health Plan list Crystal Arnson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Crystal Arnson was last updated on October 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.