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

Mary Ann Marrs, CNP

Individual provider Family Nurse Practitioner · NPI 1144201708

Mary Ann Marrs, CNP is a Family Nurse Practitioner in Rapid City, South Dakota. Licensed in South Dakota. Registered with an NPI since 2005.

Licensed in
SD
In the registry since
2005
Specialties on file
2
What do these letters mean?
CNP — Certified Nurse Practitioner
A certified nurse practitioner.

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Practice location Address checks out

7220 S Highway 16
Rapid City, SD 57702-8708 Not confirmed with CMS for 13 years — call before visiting
Phone: (605) 341-1414
Fax: (605) 341-7062
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Nurse Specialist (primary) Taxonomy 364S00000X · Licence SD-CNP CP000412 (SD)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence R029403 (SD)

Record details

NPI number1144201708
Entity typeIndividual (Type 1)
GenderFemale
Credentials CNP
Sole proprietorNo
NPI enumeratedNovember 10, 2005
Last updated in NPPESDecember 6, 2012

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients18
Services billed 31 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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