OrganizationActive
Jean Shlyak MD PC
NPI 1235431305 · Internal Medicine Physician · Northbrook, IL
Provider details
- NPI number
- 1235431305
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jean Shlyak, President(847) 390-8550
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(82/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
3492 Milwaukee Ave
Northbrook, IL 60062-7128
Phone: (847) 390-8550
Fax: (847) 390-9095
Street-level locationGet directions
Mailing address
3492 Milwaukee Ave
Northbrook, IL 60062-7128
Registry dates
- Enumerated
- 2010-11-23
- Last updated
- 2010-11-23
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.