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

Margaret Kathleen Siska, MD

Individual provider Pediatric Endocrinology Physician · NPI 1013195122

Margaret Kathleen Siska, MD is a Pediatric Medicine in Bozeman, Montana. Qualified in 2007, 19 years ago. Practices with Billings Clinic, a 805-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
19
Licensed in
MO
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1819 S 22nd Ave Ste 100
Bozeman, MT 59718-7070
Phone: (406) 898-1200
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1465 S Grand Blvd, St. Louis, MO 63104-1003 — (314) 268-4010

Specialties & licences

Pediatric Endocrinology Physician (primary) Taxonomy 2080P0205X · Licence 2013030082 (MO)

Record details

NPI number1013195122
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 31, 2008
Last updated in NPPESMarch 7, 2022
Certification dateMarch 7, 2022

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Billings Clinic — 805 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare