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Mark Daniels, M.D.
NPI 1043215718 · Gastroenterology Physician · Naperville, IL
Mark Daniels, M.D. is a Gastroenterology Physician provider in Naperville, IL (NPI 1043215718).
Provider details
- NPI number
- 1043215718
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
21 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
100 Spalding Dr
Ste 208
Naperville, IL 60540-6552
Phone: (630) 355-8000
Street-level locationGet directions
Mailing address
1860 Paysphere Cir
Chicago, IL 60674-0018
Registry dates
- Enumerated
- 2005-06-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mark Daniels's NPI number?
- Mark Daniels's National Provider Identifier (NPI) is 1043215718, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Daniels's specialty?
- Mark Daniels is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Daniels located?
- Mark Daniels's practice location on file with NPPES is 100 Spalding Dr, Naperville, IL 60540-6552.
- What is Mark Daniels's phone number?
- The practice phone number listed in the NPPES registry for Mark Daniels is (630) 355-8000.
- Is Mark Daniels's NPI active?
- Yes — Mark Daniels's NPI (1043215718) 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.