DR. JOHN J SIEFKE PSYCHOLOGICAL SERVICES PLLC
NPI 1902620115
Psychologist - Clinical in Bozeman, MT

Q: What is Dr. John J Siefke Psychological Services PLLC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Active since November 13, 2024

1902 W DICKERSON ST STE 208, BOZEMAN, MT 59718(406) 295-6899 Get Directions Write a Review

NPPES record last updated: November 13, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. John J Siefke Psychological Services Pllc NPPES

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

DR. JOHN J SIEFKE PSYCHOLOGICAL SERVICES PLLC (NPI 1902620115) is a healthcare organization registered as a clinical in Bozeman, Montana and active in the NPI registry since November 2024. The organization lists John Siefke, Psychologist, as its authorized official.

NPPES Registry Identity

NPI1902620115

Entity TypeOrganization

Primary Taxonomy103TC0700X

Legal Business NameDR. JOHN J SIEFKE PSYCHOLOGICAL SERVICES PLLC

Location Address1902 W DICKERSON ST STE 208Bozeman, MT 59718-6852

Mailing Address1902 W Dickerson St Ste 208Bozeman, MT 59718-6852

Phone(406) 295-6899

Organization SubpartNo

Authorized OfficialJohn SiefkePsychologist · (406) 295-6899

Enumeration DateNovember 13, 2024

NPPES CertifiedNovember 13, 2024

✔ NPI 1902620115 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

1902 W DICKERSON ST STE 208, Bozeman, MT 59718

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. John J Siefke Psychological Services Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Dr. John J Siefke Psychological Services PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

John Siefke, PH.D.

Clinical Psychologist

NPI 1548901853

1902 W DICKERSON ST STE 208
Bozeman, MT 59718

(406) 295-6899

✔ PECOSSame address

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

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 Dr. John J Siefke Psychological Services PLLC's NPI number?

The NPI number for Dr. John J Siefke Psychological Services PLLC is 1902620115. It was assigned to this organization in the NPPES registry on November 13, 2024.

Where is Dr. John J Siefke Psychological Services PLLC located?

Dr. John J Siefke Psychological Services PLLC is located at 1902 W Dickerson St Ste 208, Bozeman, MT 59718. The listed phone number is (406) 295-6899.

What is Dr. John J Siefke Psychological Services PLLC's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Dr. John J Siefke Psychological Services PLLC enrolled in Medicare?

Yes. Dr. John J Siefke Psychological Services PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Dr. John J Siefke Psychological Services PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Psychologist) reassigns their Medicare billing to Dr. John J Siefke Psychological Services PLLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Dr. John J Siefke Psychological Services PLLC was last updated on November 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.