NPPES file of Aug 9, 2026

Andrew Tietjen, FNP

Nurse Practitioner · Boise, ID

Andrew Tietjen, FNP is a nurse practitioner with a practice address in Boise, Idaho, and NPI 1427859164, issued on Mar 20, 2025. Check the license (Idaho 5871656, as entered in NPPES) with the Idaho board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427859164
Name
Andrew Tietjen
Credential
FNP
Primary taxonomy
Nurse Practitioner 363L00000X
License number
5871656 ID
Self-reported in NPPES; status is on the state search
Practice location
6051 W Emerald St, Boise, ID 83704
Phone
(208) 302-5150
Enumerated
Mar 20, 2025
Record last updated
May 23, 2025
Fax
(208) 302-5155
Medicare enrollment
Enrolled (PECOS I20250606000001); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest nurse practitioner records → All 593 in Idaho → Look up another NPI →

Also registered at 6051 W Emerald St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Amy Aldrich, DOEmergency Medicine Physician1285840298
  2. Kaitlyn Altuzarra, DNPFamily Nurse Practitioner1417619651
  3. Kelly AndersonPhysician Assistant1295465284
  4. Brianne Ayers, P.A.Physician Assistant1407225212
  5. Joshua Bradley, ATCAthletic Trainer1649970674
  6. Jennifer Carlsen, PA-CPhysician Assistant1235434010

Verify Andrew Tietjen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Idaho board licenses this profession
    Search for license 5871656    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Idaho license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Saint Alphonsus Regional Medical Center IncBoise, ID

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Andrew Tietjen among 593 nurse practitioner records in Idaho

Andrew Tietjen, FNP is one of 593 nurse practitioner records with a practice address in Idaho. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 92% of them.

  • NPI issued2025 · 92% of these records are older, 2% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated2025 · median 2018 among the 382 with a school on file
  • Record last updated2025 · 39% 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 Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

171 nurse practitioner records list a practice address in Boise

They are 171 of the 9,467 NPPES records with a practice address in Boise, and 593 nurse practitioner records in Idaho.

All 593 in Idaho → Every provider in Boise → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Shannon Boyer, NPBoise, ID 837041770744609
  2. Valerie Dawidczik, NPBoise, ID 837041962438382
  3. Becky Elder, NPBoise, ID 837041417938473
  4. Pamela Fields, NPBoise, ID 837041932124864
  5. Barbara Gehrke, CNPBoise, ID 837041790738706
  6. Tiffany Heidt, NPBoise, ID 837041689683518
  7. Michael Loegering, NPBoise, ID 837041821038704
  8. Colleen Loughran, NPBoise, ID 837041912023177

Common questions

What is Andrew Tietjen, FNP's NPI number?

Andrew Tietjen, FNP's National Provider Identifier (NPI) is 1427859164, issued on Mar 20, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Andrew Tietjen, FNP located?

The NPPES record lists a practice address at 6051 W Emerald St, Boise, ID, 83704. Phone: (208) 302-5150. Providers update this record themselves, so call before visiting.

How can I verify Andrew Tietjen, FNP's license?

NPPES lists Idaho license number 5871656, as entered by the provider. Search the Idaho board that licenses this profession; the NPPES record confirms identity 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.