TIFFANY MARIE JOHNSTON CNP
NPI 1437670965
Nurse Practitioner in Sioux Falls, SD

Q: What is Tiffany Johnston's NPI number?

The NPI number for Tiffany Johnston is 1437670965. It was assigned to this individual provider in the NPPES registry on July 6, 2017.

Q: What is Tiffany Johnston's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Q: When was this NPI record last updated?

The NPPES record for Tiffany Johnston was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 06, 2017PECOS EnrolledAccepts Medicare Assignment

911 E 20TH ST STE 300, SIOUX FALLS, SD 57105(605) 322-1300(605) 322-1301 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, Sep 22, 2017, Jul 6, 2017 (3 updates tracked since 2017).

On this page

About Tiffany Marie Johnston Cnp NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TIFFANY MARIE JOHNSTON CNP (NPI 1437670965) is an individual nurse practitioner in Sioux Falls, South Dakota, licensed in South Dakota (CP001232) and active in the NPI registry since July 2017. She is enrolled in Medicare PECOS, is affiliated with Grand Strand Regional Medical Center, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1437670965

Entity TypeIndividualFemale

Primary Taxonomy363L00000X

Provider Legal NameTIFFANY MARIE JOHNSTONCredential: CNP

Location Address911 E 20TH ST STE 300Sioux Falls, SD 57105-1045

Mailing Address911 E 20th St Ste 300Sioux Falls, SD 57105-1045 · (605) 322-1300 · Fax (605) 322-1301

Phone(605) 322-1300

Fax(605) 322-1301

Sole ProprietorNo

Medical School CMSOtherGraduated 2017

Enumeration DateJuly 6, 2017

Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration

✔ NPI 1437670965 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363L00000X

License✔ Licensed in SD · CP001232

Definition

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

911 E 20TH ST STE 300, Sioux Falls, SD 57105

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Sunflower Health Plan, Ambetter Health, Ambetter Health of Delaware and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tiffany Marie Johnston Cnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4183990534

PECOS Enrollment IDI20171030002565, I20231228000843

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Tiffany Johnston reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Avera Mckennan

Same address

Women's Health

911 E 20TH ST, STE 200
Sioux Falls, SD 57105

Reassigned Medicare billing, South Dakota enrollment
1,277 clinicians in this Medicare group

NPI 1255307450 (605) 322-3455

Grand Strand Specialty Associates, LLC

1,176 mi

Orthopaedic Surgery

8170 ROURK ST
Myrtle Beach, SC 29572

Reassigned Medicare billing, South Carolina enrollment
24 clinicians in this Medicare group

NPI 1821398512 (843) 449-2336

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

25 services20 patients

Treatment of broken neck of thigh bone with bone implant 27245

This procedure involves repairing a fractured thigh bone by inserting a bone implant. The implant helps stabilize the bone, allowing it to heal correctly. It's performed under anesthesia and requires a hospital stay for recovery.

21 services21 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

17 services17 patients

Treatment of upper end of broken thigh bone with placement of stabilizing device or prosthetic replacement 27236

This procedure involves treating a fracture at the top of your thigh bone. A stabilizing device or prosthetic replacement is placed to aid in healing. This helps restore mobility and function while reducing pain. The treatment aims for a quick and safe recovery.

14 services14 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

12 services12 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Grand Strand Regional Medical Center

Acute Care Hospitals · Myrtle Beach, SC

3/5 CMS rating

OwnershipProprietary

CMS Certification Number420085

Location809 82nd ParkwayMyrtle Beach, SC 29572 · Horry County

Emergency services Birthing friendly

Avera Mckennan Hospital & University Health Center

Acute Care Hospitals · Sioux Falls, SD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number430016

Location1325 S Cliff AveSioux Falls, SD 57117 · Minnehaha County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 57105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$85.21 typical visit price

range $55.52 – $167.23

Typical copayment $21.30 (range $13.88 – $41.80)

Most-billed visit code 99203

Established Patient

$97.88 typical visit price

range $18.08 – $137.08

Typical copayment $24.47 (range $4.52 – $34.27)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JESSICA CLARK CNP

Nurse Practitioner