Timothy Ketterhagen, M.D.
NPI 1679848998 · Pediatric Emergency Medicine (Pediatrics) Physician · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Timothy Ketterhagen, M.D. is a Pediatric Emergency Medicine (Pediatrics) Physician provider in Oak Lawn, IL (NPI 1679848998).
Provider details
- NPI number
- 1679848998
- Entity type
- Individual
- Primary specialty
- Pediatric Emergency Medicine (Pediatrics) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036137365 (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
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 5841 S Maryland AveChicago, IL 60637-1447Phone: (773) 702-1000
Registry dates
- Enumerated
- 2012-03-20
- Last updated
- 2025-07-03
- Certified
- 2025-07-03
Frequently asked questions
- What is Timothy Ketterhagen's NPI number?
- Timothy Ketterhagen's National Provider Identifier (NPI) is 1679848998, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Timothy Ketterhagen's specialty?
- Timothy Ketterhagen is listed in the NPPES registry with a primary specialty of Pediatric Emergency Medicine (Pediatrics) Physician (Allopathic & Osteopathic Physicians).
- Where is Timothy Ketterhagen located?
- Timothy Ketterhagen's practice location on file with NPPES is 4440 W 95th St, Oak Lawn, IL 60453.
- What is Timothy Ketterhagen's phone number?
- The practice phone number listed in the NPPES registry for Timothy Ketterhagen is (708) 684-5354.
- Does Timothy Ketterhagen accept Medicare?
- Timothy Ketterhagen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Timothy Ketterhagen's NPI active?
- Yes — Timothy Ketterhagen's NPI (1679848998) is active in the NPPES registry as of the last update on 2025-07-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.