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

Mary Ann Gengler, FNP

Individual provider Family Nurse Practitioner · NPI 1003271636

Mary Ann Gengler, FNP is a Family Nurse Practitioner in Sioux City, Iowa. Practices as a sole proprietor and works from 2 locations. Licensed in Iowa.

Licensed in
IA
In the registry since
2015
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Practice location Address checks out

3500 Singing Hills Blvd Ste 200
Sioux City, IA 51106-5127
Phone: (605) 217-7246
Fax: (605) 217-4878
Show map & directions

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

Additional practice locations (1)

  • 46786 120th St, Remsen, IA 51050-8834 — (605) 595-7735

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 076492 (IA)

Record details

NPI number1003271636
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorYes
NPI enumeratedDecember 26, 2015
Last updated in NPPESJuly 21, 2022

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