Nancy Louis, MD
NPI 1245280775 · Neonatal-Perinatal Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Louis, MD is a Neonatal-Perinatal Medicine Physician provider in Boston, MA (NPI 1245280775).
Provider details
- NPI number
- 1245280775
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 157083 (MA)
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
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 282 Washington StHartford, CT 06106-3322Phone: (860) 545-8950Fax: (860) 545-8959
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2022-09-15
- Certified
- 2022-09-15
Frequently asked questions
- What is Nancy Louis's NPI number?
- Nancy Louis's National Provider Identifier (NPI) is 1245280775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Louis's specialty?
- Nancy Louis is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Louis located?
- Nancy Louis's practice location on file with NPPES is 75 Francis St, Boston, MA 02115.
- What is Nancy Louis's phone number?
- The practice phone number listed in the NPPES registry for Nancy Louis is (617) 732-5500.
- Does Nancy Louis accept Medicare?
- Nancy Louis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Louis's NPI active?
- Yes — Nancy Louis's NPI (1245280775) is active in the NPPES registry as of the last update on 2022-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.