Janet Siel, MD
NPI 1093873366 · Internal Medicine Physician · Glenview, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Janet Siel, MD is a Internal Medicine Physician provider in Glenview, IL (NPI 1093873366).
Provider details
- NPI number
- 1093873366
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036-079033 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-12-05
- Last updated
- 2020-10-06
- Certified
- 2020-10-06
Frequently asked questions
- What is Janet Siel's NPI number?
- Janet Siel's National Provider Identifier (NPI) is 1093873366, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Siel's specialty?
- Janet Siel is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Janet Siel located?
- Janet Siel's practice location on file with NPPES is 2050 Pfingsten Rd, Glenview, IL 60026-1324.
- What is Janet Siel's phone number?
- The practice phone number listed in the NPPES registry for Janet Siel is (847) 998-4100.
- Does Janet Siel accept Medicare?
- Janet Siel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Janet Siel's NPI active?
- Yes — Janet Siel's NPI (1093873366) is active in the NPPES registry as of the last update on 2020-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.