Nathaniel Koo
NPI 1467626184 · Pediatric Surgery Physician · Chicago, IL
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Koo is a Pediatric Surgery Physician provider in Chicago, IL (NPI 1467626184).
Provider details
- NPI number
- 1467626184
- Entity type
- Individual
- Primary specialty
- Pediatric Surgery PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036133774 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2008-04-14
- Last updated
- 2021-04-26
- Certified
- 2021-04-26
Frequently asked questions
- What is Nathaniel Koo's NPI number?
- Nathaniel Koo's National Provider Identifier (NPI) is 1467626184, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Koo's specialty?
- Nathaniel Koo is listed in the NPPES registry with a primary specialty of Pediatric Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Koo located?
- Nathaniel Koo's practice location on file with NPPES is 840 S Wood St, Chicago, IL 60612-4325.
- What is Nathaniel Koo's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Koo is (312) 996-6765.
- Does Nathaniel Koo accept Medicare?
- Nathaniel Koo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Koo's NPI active?
- Yes — Nathaniel Koo's NPI (1467626184) is active in the NPPES registry as of the last update on 2021-04-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.