Catherine Grotelueschen, M.D.
NPI 1346208428 · Internal Medicine Physician · Lombard, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Grotelueschen, M.D. is a Internal Medicine Physician provider in Lombard, IL (NPI 1346208428).
Provider details
- NPI number
- 1346208428
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036-064001 (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
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
Mailing address
Registry dates
- Enumerated
- 2006-05-01
- Last updated
- 2018-08-31
Frequently asked questions
- What is Catherine Grotelueschen's NPI number?
- Catherine Grotelueschen's National Provider Identifier (NPI) is 1346208428, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Grotelueschen's specialty?
- Catherine Grotelueschen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Catherine Grotelueschen located?
- Catherine Grotelueschen's practice location on file with NPPES is 2340 S Highland Ave, Lombard, IL 60148.
- What is Catherine Grotelueschen's phone number?
- The practice phone number listed in the NPPES registry for Catherine Grotelueschen is (630) 932-2020.
- Does Catherine Grotelueschen accept Medicare?
- Catherine Grotelueschen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Grotelueschen's NPI active?
- Yes — Catherine Grotelueschen's NPI (1346208428) is active in the NPPES registry as of the last update on 2018-08-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.