MS. SANDRA K. SIEFKEN LPC, LISAC
NPI 1871690933
Counselor in Anthem, AZ

Q: What is Sandra Siefken's NPI number?

The NPI number for Sandra Siefken is 1871690933. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Q: What is Sandra Siefken's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

Q: When was this NPI record last updated?

The NPPES record for Sandra Siefken was last updated on May 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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 September 20, 2006

40820 N TRAILHEAD WAY, ANTHEM, AZ 85086(602) 828-8783 Get Directions Write a Review

NPPES record last updated: May 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 15, 2026, Sep 11, 2025 (2 updates tracked since 2025).

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About Ms. Sandra K. Siefken Lpc, Lisac NPPES

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

MS. SANDRA K. SIEFKEN LPC, LISAC (NPI 1871690933) is an individual counselor in Anthem, Arizona, licensed in Arizona (LPC10450) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1871690933

Entity TypeIndividualFemale

Primary Taxonomy101Y00000X

Provider Legal NameMS. SANDRA K. SIEFKENCredential: LPC, LISAC

Location Address40820 N TRAILHEAD WAYAnthem, AZ 85086-4941

Mailing Address40820 N Trailhead WayAnthem, AZ 85086-4941 · (602) 828-8783

Phone(602) 828-8783

Sole ProprietorYes

Enumeration DateSeptember 20, 2006

Last NPPES UpdateMay 15, 20262 updates tracked since enumeration

NPPES CertifiedMay 15, 2026

✔ NPI 1871690933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers

Taxonomy Code101Y00000X

License✔ Licensed in AZ · LPC10450

Definition

A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

Also ListedCounselor · Addiction (Substance Use Disorder)Taxonomy 101YA0400X · License LISAC1477 (AZ)

40820 N TRAILHEAD WAY, Anthem, AZ 85086

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Plan, Inc., Providence Health Plan, UnitedHealthcare.Insurance ›

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 Sandra Siefken's NPI number?

The NPI number for Sandra Siefken is 1871690933. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Sandra Siefken located?

Sandra Siefken practices at 40820 N Trailhead Way, Anthem, AZ 85086. The listed phone number is (602) 828-8783.

What is Sandra Siefken's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

What insurance does Sandra Siefken accept?

Health plans from Oscar Health Plan, Inc., Providence Health Plan and UnitedHealthcare list Sandra Siefken 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 Sandra Siefken was last updated on May 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.