Mark Demchak, ATC
NPI 1043655145 · Athletic Trainer · Warrenville, IL
Mark Demchak, ATC is a Athletic Trainer provider in Warrenville, IL (NPI 1043655145).
Provider details
- NPI number
- 1043655145
- Entity type
- Individual
- Primary specialty
- Athletic TrainerRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- ATC
- Sex
- Male
- Sole proprietor
- No
- License
- 096003197 (IL)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2013-05-02
- Last updated
- 2013-05-02
Frequently asked questions
- What is Mark Demchak's NPI number?
- Mark Demchak's National Provider Identifier (NPI) is 1043655145, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Demchak's specialty?
- Mark Demchak is listed in the NPPES registry with a primary specialty of Athletic Trainer (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Mark Demchak located?
- Mark Demchak's practice location on file with NPPES is 27650 Ferry Rd, Warrenville, IL 60555-3845.
- What is Mark Demchak's phone number?
- The practice phone number listed in the NPPES registry for Mark Demchak is (630) 225-2663.
- Is Mark Demchak's NPI active?
- Yes — Mark Demchak's NPI (1043655145) is active in the NPPES registry as of the last update on 2013-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.