Thomas Callahan
NPI 1598619363 · Student in an Organized Health Care Education/Training Program · North Chicago, IL
Thomas Callahan is a Student in an Organized Health Care Education/Training Program provider in North Chicago, IL (NPI 1598619363).
Provider details
- NPI number
- 1598619363
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
Mailing address
Registry dates
- Enumerated
- 2026-02-26
- Last updated
- 2026-02-26
- Certified
- 2026-02-26
Frequently asked questions
- What is Thomas Callahan's NPI number?
- Thomas Callahan's National Provider Identifier (NPI) is 1598619363, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Callahan's specialty?
- Thomas Callahan is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Thomas Callahan located?
- Thomas Callahan's practice location on file with NPPES is 3333 Green Bay Rd, North Chicago, IL 60064-3037.
- What is Thomas Callahan's phone number?
- The practice phone number listed in the NPPES registry for Thomas Callahan is (847) 578-3000.
- Is Thomas Callahan's NPI active?
- Yes — Thomas Callahan's NPI (1598619363) is active in the NPPES registry as of the last update on 2026-02-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.