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Mark Lewis, MD
NPI 1811007925 · Internal Medicine Physician · Geneva, IL
Mark Lewis, MD is a Internal Medicine Physician provider in Geneva, IL (NPI 1811007925).
Provider details
- NPI number
- 1811007925
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036074413 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 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
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
2197 Blackberry Dr
Geneva, IL 60134
Phone: (630) 232-7600
Fax: (630) 232-7941
Approximate (ZIP-level) locationGet directions
Mailing address
2197 Blackberry Dr
Geneva, IL 60134
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2009-11-18
Frequently asked questions
- What is Mark Lewis's NPI number?
- Mark Lewis's National Provider Identifier (NPI) is 1811007925, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Lewis's specialty?
- Mark Lewis is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Lewis located?
- Mark Lewis's practice location on file with NPPES is 2197 Blackberry Dr, Geneva, IL 60134.
- What is Mark Lewis's phone number?
- The practice phone number listed in the NPPES registry for Mark Lewis is (630) 232-7600.
- Is Mark Lewis's NPI active?
- Yes — Mark Lewis's NPI (1811007925) is active in the NPPES registry as of the last update on 2009-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.