Margaux Rioux, FNP
NPI 1437964947 · Family Nurse Practitioner · South Portland, ME
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaux Rioux, FNP is a Family Nurse Practitioner provider in South Portland, ME (NPI 1437964947).
Provider details
- NPI number
- 1437964947
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- CNP251052 (ME)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
- 2025-02-11
- Last updated
- 2025-02-11
- Certified
- 2025-02-11
Frequently asked questions
- What is Margaux Rioux's NPI number?
- Margaux Rioux's National Provider Identifier (NPI) is 1437964947, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaux Rioux's specialty?
- Margaux Rioux is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaux Rioux located?
- Margaux Rioux's practice location on file with NPPES is 100 Foden Rd Ste 203, South Portland, ME 04106-2327.
- What is Margaux Rioux's phone number?
- The practice phone number listed in the NPPES registry for Margaux Rioux is (207) 874-1489.
- Does Margaux Rioux accept Medicare?
- Margaux Rioux is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaux Rioux's NPI active?
- Yes — Margaux Rioux's NPI (1437964947) is active in the NPPES registry as of the last update on 2025-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.