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

Marah J Greff, MSCFSLP

Individual provider Speech-Language Pathologist · NPI 1972163632

Marah J Greff, MSCFSLP is a Speech-Language Pathologist in Williston, North Dakota. Licensed in North Dakota. Registered with an NPI since 2019.

Licensed in
ND
In the registry since
2019

Practice location Address checks out

221 University Ave Ste 203
Williston, ND 58801-5618
Phone: (701) 580-8788
Fax: (701) 609-5231
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Speech-Language Pathologist (primary) Taxonomy 235Z00000X · Licence 1733 (ND)

Record details

NPI number1972163632
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSCFSLP
Sole proprietorNo
NPI enumeratedJune 15, 2019
Last updated in NPPESJune 15, 2019
Mailing address221 University Ave Ste 203, Williston, ND 58801-5618

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