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

Tiffany Marie Johnston, CNP

Individual provider Nurse Practitioner · NPI 1437670965

Tiffany Marie Johnston, CNP is a Nurse Practitioner in Sioux Falls, South Dakota. Qualified in 2017, 9 years ago. Practices with Avera McKennan, a 962-clinician group and accepts Medicare assignment. Licensed in South Dakota.

Years since qualifying
9
Licensed in
SD
In the registry since
2017
What do these letters mean?
CNP — Certified Nurse Practitioner
A certified nurse practitioner.

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Practice location Address checks out

911 E 20th St Ste 300
Sioux Falls, SD 57105-1045
Phone: (605) 322-1300
Fax: (605) 322-1301
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence CP001232 (SD)

Record details

NPI number1437670965
Entity typeIndividual (Type 1)
GenderFemale
Credentials CNP
Sole proprietorNo
NPI enumeratedJuly 6, 2017
Last updated in NPPESJuly 21, 2022

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Avera McKennan — 962 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

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