David Mahon, MD
NPI 1326155888 · Family Medicine Physician · Delavan, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Mahon, MD is a Family Medicine Physician provider in Delavan, WI (NPI 1326155888).
Provider details
- NPI number
- 1326155888
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 31667 (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
- 2006-08-23
- Last updated
- 2023-03-07
Frequently asked questions
- What is David Mahon's NPI number?
- David Mahon's National Provider Identifier (NPI) is 1326155888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Mahon's specialty?
- David Mahon is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Mahon located?
- David Mahon's practice location on file with NPPES is 1550 Hobbs Dr, Delavan, WI 53115.
- What is David Mahon's phone number?
- The practice phone number listed in the NPPES registry for David Mahon is (262) 740-4200.
- Does David Mahon accept Medicare?
- David Mahon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Mahon's NPI active?
- Yes — David Mahon's NPI (1326155888) is active in the NPPES registry as of the last update on 2023-03-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.