John Maher, MD
NPI 1588762819 · Emergency Medicine Physician · Beloit, WI
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Maher, MD is a Emergency Medicine Physician provider in Beloit, WI (NPI 1588762819).
Provider details
- NPI number
- 1588762819
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 026681 (WI)
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
19 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
- 2006-09-20
- Last updated
- 2011-05-05
Frequently asked questions
- What is John Maher's NPI number?
- John Maher's National Provider Identifier (NPI) is 1588762819, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Maher's specialty?
- John Maher is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Maher located?
- John Maher's practice location on file with NPPES is 1969 W Hart Rd, Beloit, WI 53511-2230.
- What is John Maher's phone number?
- The practice phone number listed in the NPPES registry for John Maher is (608) 758-7215.
- Does John Maher accept Medicare?
- John Maher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Maher's NPI active?
- Yes — John Maher's NPI (1588762819) is active in the NPPES registry as of the last update on 2011-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.