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Jei Ryoo, M.D.
NPI 1396836540 · Specialist · Chicago, IL
Jei Ryoo, M.D. is a Specialist provider in Chicago, IL (NPI 1396836540).
Provider details
- NPI number
- 1396836540
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(84/100 index)
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
83% 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
820 S. Damen Ave
Path & Lab Medicine Service (mp 113)
Chicago, IL 60612
Phone: (312) 569-6696
Fax: (312) 569-6122
Street-level locationGet directions
Mailing address
1816 Dunhill Cir
Glenview, IL 60025-7618
Registry dates
- Enumerated
- 2006-09-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jei Ryoo's NPI number?
- Jei Ryoo's National Provider Identifier (NPI) is 1396836540, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jei Ryoo's specialty?
- Jei Ryoo is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Jei Ryoo located?
- Jei Ryoo's practice location on file with NPPES is 820 S. Damen Ave, Chicago, IL 60612.
- What is Jei Ryoo's phone number?
- The practice phone number listed in the NPPES registry for Jei Ryoo is (312) 569-6696.
- Is Jei Ryoo's NPI active?
- Yes — Jei Ryoo's NPI (1396836540) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.