Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gretchen Hartmann, LMFT

Individual provider Marriage & Family Therapist · NPI 1588092084

Gretchen Hartmann, LMFT is a Marriage and Family Therapist in Sioux Falls, South Dakota. Qualified in 2016, 10 years ago. Practices with Carroll Institute, a 2-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
10
Licensed in
SD
In the registry since
2013
What do these letters mean?
LMFT — Licensed Marriage and Family Therapist
A therapist licensed to treat couples and families.

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Practice location Address checks out

2109 S Norton Ave
Sioux Falls, SD 57105-3730 Not confirmed with CMS for 12 years — call before visiting
Phone: (605) 334-2696
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence LMFT 1218 (SD)

Record details

NPI number1588092084
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMFT
Sole proprietorNo
NPI enumeratedOctober 18, 2013
Last updated in NPPESOctober 18, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMARRIAGE AND FAMILY THERAPIST
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice Carroll Institute — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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