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DEREK WALLENSTEIN
NPI 1689271371
Social Worker in Fargo, ND

Active since October 06, 2020
1635 43RD ST S STE 105, FARGO, ND 58103(701) 412-2973 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Sep 11, 2025, Oct 6, 2020 (2 updates tracked since 2020).

About Derek Wallenstein NPPES

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

DEREK WALLENSTEIN (NPI 1689271371) is an individual social worker in Fargo, North Dakota and active in the NPI registry since October 2020.

NPPES Registry Identity

NPI1689271371
Entity TypeIndividualMale
Primary Taxonomy104100000X
Provider Legal NameDEREK WALLENSTEIN
Location Address1635 43RD ST S STE 105Fargo, ND 58103-3579
Mailing Address1547 30th Ave SMoorhead, MN 56560-5149 · (218) 287-4338 · Fax (218) 287-5928
Phone(701) 412-2973
Sole ProprietorNo
Enumeration DateOctober 6, 2020
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2025
✔ NPI 1689271371 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
Also ListedSpecialistTaxonomy 174400000X
1635 43RD ST S STE 105, Fargo, ND 58103
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Other Providers at the Same Location NPPES 12

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. ANI CELINE MANGOLD PHD, LP
Psychologist (Clinical)
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (218) 287-4338
GARRICK LEITH
Behavior Analyst
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (701) 412-2973
JOLYNN LENTZ
Behavior Analyst
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (701) 412-2973
KATHARINE BARRETT FERGUSON LMSW
Social Worker (Clinical)
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (218) 287-4338
KELLY JOHNSON
Social Worker (Clinical)
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (701) 412-2973
MARY KATHARINE EPPING LAC, LCSW
Social Worker (Clinical)
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (218) 287-4338
KELSEY MEHUS
Social Worker (Clinical)
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (701) 412-2973
MISTY WRIGHT
Counselor (Professional)
1635 43RD ST S STE 105
FARGO, ND 58103
Cass County (701) 412-2973

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 Derek Wallenstein's NPI number?

The NPI number for Derek Wallenstein is 1689271371. It was assigned to this individual provider in the NPPES registry on October 6, 2020.

Where is Derek Wallenstein located?

Derek Wallenstein practices at 1635 43rd St S Ste 105, Fargo, ND 58103. The listed phone number is (701) 412-2973.

What is Derek Wallenstein's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Derek Wallenstein was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.