Margaret Maher, PHD, RDN
NPI 1548002074 · Registered Dietitian · Madison, WI
Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Maher, PHD, RDN is a Registered Dietitian provider in Madison, WI (NPI 1548002074).
Provider details
- NPI number
- 1548002074
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- PHD, RDN
- Sex
- Female
- Sole proprietor
- No
- License
- 1953 (WI)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Dietary & Nutritional Service Providers
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
- 2024-06-06
- Last updated
- 2026-04-20
- Certified
- 2026-04-20
Frequently asked questions
- What is Margaret Maher's NPI number?
- Margaret Maher's National Provider Identifier (NPI) is 1548002074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Maher's specialty?
- Margaret Maher is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Margaret Maher located?
- Margaret Maher's practice location on file with NPPES is 621 Science Dr, Madison, WI 53711-1074.
- What is Margaret Maher's phone number?
- The practice phone number listed in the NPPES registry for Margaret Maher is (608) 265-8303.
- Does Margaret Maher accept Medicare?
- Margaret Maher is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Maher's NPI active?
- Yes — Margaret Maher's NPI (1548002074) is active in the NPPES registry as of the last update on 2026-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.