Mary Beth Siewert, FNP
Occupational Health Nurse Practitioner · Bozeman, MT
Mary Beth Siewert, FNP is an occupational health nurse practitioner with a practice address in Bozeman, Montana, and NPI 1942210737, issued on Aug 8, 2006. Check the license (Montana 16885, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Beth Siewert
- Credential
- FNP
- Primary taxonomy
- Occupational Health Nurse Practitioner 363LX0106X
- License number
- 16885 MT
Self-reported in NPPES; status is on the state search - Practice location
- 915 Highland Blvd, Bozeman, MT 59715
- Phone
- (406) 585-5000
- Enumerated
- Aug 8, 2006
- Record last updated
- Oct 12, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 4307381 MT
- Entity
- Type 1 · individual
1 nearest occupational health nurse practitioner record → All 2 in Montana → Look up another NPI →
Also registered at 915 Highland Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Beth Siewert in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 16885Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average occupational health nurse practitioner in 2024
16 Medicare Part D claims, against an average of 393 among the 56 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Occupational Health Nurse Practitioner providers in Montana
There are 2 occupational health nurse practitioner records in Montana.
All 2 in Montana → Every provider in Bozeman → Occupational Health Nurse Practitioner nationwide →
The 1 occupational health nurse practitioner record with the nearest ZIP codes
- Edward Sutliffe, FNPBillings, MT 591011972602563
Common questions
What is Mary Beth Siewert, FNP's NPI number?
Mary Beth Siewert, FNP's National Provider Identifier (NPI) is 1942210737, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Beth Siewert, FNP located?
The NPPES record lists a practice address at 915 Highland Blvd, Bozeman, MT, 59715. Phone: (406) 585-5000. Providers update this record themselves, so call before visiting.
How can I verify Mary Beth Siewert, FNP's license?
NPPES lists Montana license number 16885, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Beth Siewert, FNP prescribe under Medicare Part D?
In 2024, Mary Beth Siewert, FNP had 16 Medicare Part D claims; the average among occupational health nurse practitioner prescribers was 393. Part D covers Medicare prescriptions 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.
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.