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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SYDNEY GULDSETH
NPI 1225706526
Nurse Practitioner - Psychiatric/Mental Health in Helena, MT

Active since September 01, 2021PECOS Enrolled
2755 COLONIAL DR, HELENA, MT 59601(406) 444-7500 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Sydney Guldseth NPPES

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

SYDNEY GULDSETH (NPI 1225706526) is an individual psychiatric/mental health provider in Helena, Montana, licensed in Montana (NUR-APRN-LIC-177511) and active in the NPI registry since September 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1225706526
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameSYDNEY GULDSETH
Location Address2755 COLONIAL DRHelena, MT 59601-4926
Mailing Address2620 Shodair DrHelena, MT 59601-5743
Phone(406) 444-7500
Sole ProprietorNo
Enumeration DateSeptember 1, 2021
Last NPPES UpdateSeptember 29, 2026
NPPES CertifiedSeptember 29, 2026
✔ NPI 1225706526 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in MT · NUR-APRN-LIC-177511
2755 COLONIAL DR, Helena, MT 59601
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sydney Guldseth is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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

2

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

Montana Children's Home & Hospital
0.1 mi
Psychiatric Residential Treatment Facility
2755 COLONIAL DR
Helena, MT 59601
  • Reassigned Medicare billing, Montana enrollment
  • Medicare enrollment name: Montana Childrens Home & Hospital
  • 50 clinicians in this Medicare group
NPI 1255704508 (406) 444-7500
Benefis Hospitals Inc
72 mi
Multi-Specialty
1401 25TH ST S
Great Falls, MT 59405
  • Reassigned Medicare billing, Montana enrollment
  • 637 clinicians in this Medicare group
NPI 1780968974 (406) 455-5000

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59601 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
$87.97 typical visit price
range $56.81 – $172.26
Typical copayment $21.99 (range $14.20 – $43.06)
Most-billed visit code 99203
Established Patient
$100.16 typical visit price
range $18.24 – $140.32
Typical copayment $25.04 (range $4.56 – $35.08)
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 20

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

DR. DEANNA L. ARMSTRONG M.D.
Psychiatry & Neurology (Psychiatry)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
CHRISTINA MARIE HAWBAKER GC
Genetic Counselor, MS
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-1061
MS. CYNTHIA MARIE HUDSON MA, MS
Genetic Counselor, MS
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
MARY KATHRYN SCHIEL MSN, APRN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
COURTNEY LYNNE ROGASKI LCSW
Social Worker (Clinical)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
ALICIA MARIE GALAHAN
Nurse Practitioner (Psychiatric/Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
MS. BLANCHE NICOLE SUMNER MS, LCPC
Counselor (Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
THOMAS BOGEN OTR/L
Occupational Therapist
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-1129

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Sydney Guldseth's NPI number?

The NPI number for Sydney Guldseth is 1225706526. It was assigned to this individual provider in the NPPES registry on September 1, 2021.

Where is Sydney Guldseth located?

Sydney Guldseth practices at 2755 Colonial Dr, Helena, MT 59601. The listed phone number is (406) 444-7500.

What is Sydney Guldseth's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Sydney Guldseth enrolled in Medicare?

Yes. Sydney Guldseth is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Sydney Guldseth's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sydney Guldseth reassigns Medicare benefits to 2 organizations: Montana Children's Home & Hospital (Helena, MT) and Benefis Hospitals Inc (Great Falls, MT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sydney Guldseth's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sydney Guldseth accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and PacificSource Health Plans list Sydney Guldseth as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Sydney Guldseth was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.