Dean Karahalios, DO
NPI 1891291704 · Pediatric Cardiology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dean Karahalios, DO is a Pediatric Cardiology Physician provider in Madison, WI (NPI 1891291704).
Provider details
- NPI number
- 1891291704
- Entity type
- Individual
- Primary specialty
- Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036.168419 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 225 E Chicago AveChicago, IL 60611-2991Phone: (312) 227-4000
Registry dates
- Enumerated
- 2018-04-01
- Last updated
- 2025-09-04
- Certified
- 2025-09-04
Frequently asked questions
- What is Dean Karahalios's NPI number?
- Dean Karahalios's National Provider Identifier (NPI) is 1891291704, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dean Karahalios's specialty?
- Dean Karahalios is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Dean Karahalios located?
- Dean Karahalios's practice location on file with NPPES is 1675 Highland Ave, Madison, WI 53792-0002.
- What is Dean Karahalios's phone number?
- The practice phone number listed in the NPPES registry for Dean Karahalios is (608) 915-0420.
- Does Dean Karahalios accept Medicare?
- Dean Karahalios is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dean Karahalios's NPI active?
- Yes — Dean Karahalios's NPI (1891291704) is active in the NPPES registry as of the last update on 2025-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.