Margaret Siska, MD
NPI 1013195122 · Pediatric Endocrinology Physician · Bozeman, MT
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Siska, MD is a Pediatric Endocrinology Physician provider in Bozeman, MT (NPI 1013195122).
Provider details
- NPI number
- 1013195122
- Entity type
- Individual
- Primary specialty
- Pediatric Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 2013030082 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$111 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1465 S Grand BlvdSt. Louis, MO 63104-1003Phone: (314) 268-4010Fax: (314) 268-6448
Registry dates
- Enumerated
- 2008-01-31
- Last updated
- 2022-03-07
- Certified
- 2022-03-07
Frequently asked questions
- What is Margaret Siska's NPI number?
- Margaret Siska's National Provider Identifier (NPI) is 1013195122, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Siska's specialty?
- Margaret Siska is listed in the NPPES registry with a primary specialty of Pediatric Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Siska located?
- Margaret Siska's practice location on file with NPPES is 1819 S 22nd Ave Ste 100, Bozeman, MT 59718-7070.
- What is Margaret Siska's phone number?
- The practice phone number listed in the NPPES registry for Margaret Siska is (406) 898-1200.
- Does Margaret Siska accept Medicare?
- Margaret Siska is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Siska's NPI active?
- Yes — Margaret Siska's NPI (1013195122) is active in the NPPES registry as of the last update on 2022-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.