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

MARLENE JOYCE RUFF MA
NPI 1659356459
Marriage & Family Therapist in Sioux Falls, SD

Q: What is Marlene Ruff's NPI number?

The NPI number for Marlene Ruff is 1659356459. It was assigned to this individual provider in the NPPES registry on December 14, 2005.

Q: What is Marlene Ruff's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

Q: When was this NPI record last updated?

The NPPES record for Marlene Ruff was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 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 December 14, 2005

625 S MINNESOTA AVE, #201, SIOUX FALLS, SD 57104(605) 334-7713(605) 334-5348 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 13, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Marlene Joyce Ruff Ma NPPES

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

MARLENE JOYCE RUFF MA (NPI 1659356459) is an individual marriage & family therapist in Sioux Falls, South Dakota, licensed in South Dakota (LMFT1164QMHP) and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1659356459

Entity TypeIndividualFemale

Primary Taxonomy106H00000X

Provider Legal NameMARLENE JOYCE RUFFCredential: MA

Location Address625 S MINNESOTA AVE, #201Sioux Falls, SD 57104-4871

Mailing Address625 S Minnesota Ave, #201Sioux Falls, SD 57104-4871 · (605) 334-7713 · Fax (605) 334-5348

Phone(605) 334-7713

Fax(605) 334-5348

Sole ProprietorNo

Enumeration DateDecember 14, 2005

Last NPPES UpdateJuly 13, 20262 updates tracked since enumeration

✔ NPI 1659356459 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyMarriage & Family TherapistBehavioral Health & Social Service Providers

Taxonomy Code106H00000X

License✔ Licensed in SD · LMFT1164QMHP

Definition

A marriage and family therapist is a person with a master's degree in marriage and family therapy, or a master's or doctoral degree in a related mental health field with substantially equivalent coursework in marriage and family therapy, who receives supervised clinical experience, or a person who meets the state requirements to practice as a marriage and family therapist. A marriage and family therapist treats mental and emotional disorders within the context of marriage and family systems. A marriage and family therapist provides mental health and counseling services to individuals, couples, families, and groups.

Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License LPC699 (SD)

625 S MINNESOTA AVE, Sioux Falls, SD 57104

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Other Identifiers 1

Other4996167SD · Bcbs

Other Providers at the Same Location NPPES 4

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

MIKAELA K CAMPBELL

Counselor

625 S MINNESOTA AVE, SUITE 201
SIOUX FALLS, SD 57104

Minnehaha County (605) 334-7713

MR. WAYNE SMITH

Counselor (Mental Health)

625 S MINNESOTA AVE, SUITE 201
SIOUX FALLS, SD 57104

Minnehaha County (605) 334-7713

CYNTHIA SNELLER BS

Counselor (Mental Health)

625 S MINNESOTA AVE, SUITE 201
SIOUX FALLS, SD 57104

Minnehaha County (605) 334-7713

MS. LINDA KAY MABEE MS NCC LPCMH QMHP

Counselor (Mental Health)

625 S MINNESOTA AVE, NUMBER 201
SIOUX FALLS, SD 57104

Minnehaha County (605) 334-7713

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 Marlene Ruff's NPI number?

The NPI number for Marlene Ruff is 1659356459. It was assigned to this individual provider in the NPPES registry on December 14, 2005.

Where is Marlene Ruff located?

Marlene Ruff practices at 625 S Minnesota Ave #201, Sioux Falls, SD 57104. The listed phone number is (605) 334-7713.

What is Marlene Ruff's specialty?

The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.

When was this NPI record last updated?

The NPPES record for Marlene Ruff was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 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.