Mary Ann Demetrius, MD
NPI 1295830966 · Internal Medicine Physician · West Haven, CT
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ann Demetrius, MD is a Internal Medicine Physician provider in West Haven, CT (NPI 1295830966).
Provider details
- NPI number
- 1295830966
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 19989 (CT)
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
- 2006-09-14
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mary Ann Demetrius's NPI number?
- Mary Ann Demetrius's National Provider Identifier (NPI) is 1295830966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ann Demetrius's specialty?
- Mary Ann Demetrius is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Ann Demetrius located?
- Mary Ann Demetrius's practice location on file with NPPES is 950 Campbell Ave, West Haven, CT 06516-2770.
- What is Mary Ann Demetrius's phone number?
- The practice phone number listed in the NPPES registry for Mary Ann Demetrius is (203) 932-5711.
- Does Mary Ann Demetrius accept Medicare?
- Mary Ann Demetrius 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 Demetrius's NPI active?
- Yes — Mary Ann Demetrius's NPI (1295830966) 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.