Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Sidney P Williamson Jr., MD

Individual provider Emergency Medicine Physician · NPI 1649368044

Dr. Sidney P Williamson Jr., MD is an Emergency Medicine in Bozeman, Montana. Qualified in 1999, 27 years ago. Practices with Bozeman Health Deaconess Hospital, a 313-clinician group and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
27
Licensed in
MT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

915 Highland Blvd
Bozeman, MT 59715-6902
Phone: (406) 585-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 10418 (MT)

Record details

NPI number1649368044
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 11, 2006
Last updated in NPPESApril 15, 2025
Certification dateApril 15, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Bozeman Health Deaconess Hospital — 313 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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