Tiffany Marie Johnston, CNP
Nurse Practitioner · Sioux Falls, SD
Tiffany Marie Johnston, CNP is a nurse practitioner with a practice address in Sioux Falls, South Dakota, and NPI 1437670965, issued on Jul 6, 2017. Check the license (South Dakota CP001232, as entered in NPPES) with the South Dakota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Tiffany Marie Johnston
- Credential
- CNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- CP001232 SD
Self-reported in NPPES; status is on the state search - Practice location
- 911 E 20TH St Ste 300, Sioux Falls, SD 57105
- Phone
- (605) 322-1300
- Enumerated
- Jul 6, 2017
- Record last updated
- Jul 21, 2022
- Fax
- (605) 322-1301
- Medicare enrollment
- Enrolled (PECOS I20171030002565); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 465 in South Dakota → Look up another NPI →
Also registered at 911 E 20TH St Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tiffany Marie Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich South Dakota board licenses this profession
Search for license CP001232Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average nurse practitioner in 2024
41 Medicare Part D claims for 24 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $139.39
3 payments; by number, the most common kind was food and beverage; the largest payer was Conetic Solutions, Inc. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Avera MckennanSioux Falls, SD
- Grand Strand Specialty Associates, LLCMyrtle Beach, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tiffany Marie Johnston among 465 nurse practitioner records in South Dakota
Tiffany Marie Johnston, CNP is one of 465 nurse practitioner records with a practice address in South Dakota. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 46% of them.
- NPI issued2017 · 46% of these records are older, 50% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2017 · median 2018 among the 331 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a South Dakota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
239 nurse practitioner records list a practice address in Sioux Falls
They are 239 of the 6,563 NPPES records with a practice address in Sioux Falls, and 465 nurse practitioner records in South Dakota.
All 465 in South Dakota → Every provider in Sioux Falls → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Suzanne Bakken, NPSioux Falls, SD 571051558309211
- Denise Boraas, CNPSioux Falls, SD 571051750396560
- Donna Dickey, CNPSioxu Falls, SD 571051558317628
- Lisa Duncan, CNPSioux Falls, SD 571051285600965
- Julie Elson, CNPSioux Falls, SD 571051306842034
- Nancy Foss, CNPSioux Falls, SD 571051932105590
- Melinda Frost, CNPSioux Falls, SD 571051144296930
- Karen Hanisch, FNPSioux Falls, SD 571051881647774
Common questions
What is Tiffany Marie Johnston, CNP's NPI number?
Tiffany Marie Johnston, CNP's National Provider Identifier (NPI) is 1437670965, issued on Jul 6, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Tiffany Marie Johnston, CNP located?
The NPPES record lists a practice address at 911 E 20TH St Ste 300, Sioux Falls, SD, 57105. Phone: (605) 322-1300. Providers update this record themselves, so call before visiting.
How can I verify Tiffany Marie Johnston, CNP's license?
NPPES lists South Dakota license number CP001232, as entered by the provider. Search the South Dakota board that licenses this profession; the NPPES record confirms identity only.
How much does Tiffany Marie Johnston, CNP prescribe under Medicare Part D?
In 2024, Tiffany Marie Johnston, CNP had 41 Medicare Part D claims for 24 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.