Mary Siewert, FNP
NPI 1942210737 · Occupational Health Nurse Practitioner · Bozeman, MT
Enrolled with Medicare as Order and Referring Only - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Siewert, FNP is a Occupational Health Nurse Practitioner provider in Bozeman, MT (NPI 1942210737).
Provider details
- NPI number
- 1942210737
- Entity type
- Individual
- Primary specialty
- Occupational Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 16885 (MT)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-08
- Last updated
- 2007-10-12
Frequently asked questions
- What is Mary Siewert's NPI number?
- Mary Siewert's National Provider Identifier (NPI) is 1942210737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Siewert's specialty?
- Mary Siewert is listed in the NPPES registry with a primary specialty of Occupational Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Siewert located?
- Mary Siewert's practice location on file with NPPES is 915 Highland Blvd, Bozeman, MT 59715-6902.
- What is Mary Siewert's phone number?
- The practice phone number listed in the NPPES registry for Mary Siewert is (406) 585-5000.
- Does Mary Siewert accept Medicare?
- Mary Siewert is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Siewert's NPI active?
- Yes — Mary Siewert's NPI (1942210737) is active in the NPPES registry as of the last update on 2007-10-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.