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Leonard Siedband, M.D.
NPI 1992754840 · Internal Medicine Physician · Niles, IL
Leonard Siedband, M.D. is a Internal Medicine Physician provider in Niles, IL (NPI 1992754840).
Provider details
- NPI number
- 1992754840
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036053030 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
7900 N Milwaukee Ave
18
Niles, IL 60714-3159
Phone: (847) 663-9700
Fax: (874) 663-9702
Street-level locationGet directions
Mailing address
7900 N Milwaukee Ave
Niles, IL 60714-3159
Registry dates
- Enumerated
- 2006-05-09
- Last updated
- 2010-04-08
Frequently asked questions
- What is Leonard Siedband's NPI number?
- Leonard Siedband's National Provider Identifier (NPI) is 1992754840, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leonard Siedband's specialty?
- Leonard Siedband is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Leonard Siedband located?
- Leonard Siedband's practice location on file with NPPES is 7900 N Milwaukee Ave, Niles, IL 60714-3159.
- What is Leonard Siedband's phone number?
- The practice phone number listed in the NPPES registry for Leonard Siedband is (847) 663-9700.
- Is Leonard Siedband's NPI active?
- Yes — Leonard Siedband's NPI (1992754840) is active in the NPPES registry as of the last update on 2010-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.