Mary Ann Fieffer, APRN, RN
NPI 1932147675 · Family Nurse Practitioner · New Haven, CT
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ann Fieffer, APRN, RN is a Family Nurse Practitioner provider in New Haven, CT (NPI 1932147675).
Provider details
- NPI number
- 1932147675
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN, RN
- Sex
- Female
- License
- 003167 (CT)
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
20 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
- 2006-06-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Ann Fieffer's NPI number?
- Mary Ann Fieffer's National Provider Identifier (NPI) is 1932147675, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ann Fieffer's specialty?
- Mary Ann Fieffer is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Ann Fieffer located?
- Mary Ann Fieffer's practice location on file with NPPES is 800 Howard Ave, New Haven, CT 06519-1369.
- What is Mary Ann Fieffer's phone number?
- The practice phone number listed in the NPPES registry for Mary Ann Fieffer is (203) 785-2140.
- Does Mary Ann Fieffer accept Medicare?
- Mary Ann Fieffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ann Fieffer's NPI active?
- Yes — Mary Ann Fieffer's NPI (1932147675) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.