Joel Hartl, M.D.
NPI 1518256742 · Pediatrics Physician · Milwaukee, WI
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joel Hartl, M.D. is a Pediatrics Physician provider in Milwaukee, WI (NPI 1518256742).
Provider details
- NPI number
- 1518256742
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- DR.0053575 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
- 2011-03-28
- Last updated
- 2016-03-17
Frequently asked questions
- What is Joel Hartl's NPI number?
- Joel Hartl's National Provider Identifier (NPI) is 1518256742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joel Hartl's specialty?
- Joel Hartl is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Joel Hartl located?
- Joel Hartl's practice location on file with NPPES is 8701 W Watertown Plank Rd, Milwaukee, WI 53226-3548.
- What is Joel Hartl's phone number?
- The practice phone number listed in the NPPES registry for Joel Hartl is (414) 266-2000.
- Does Joel Hartl accept Medicare?
- Joel Hartl is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joel Hartl's NPI active?
- Yes — Joel Hartl's NPI (1518256742) is active in the NPPES registry as of the last update on 2016-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.