Mary Ellen Lyon, M.D.
NPI 1093101875 · Emergency Medicine Physician · New Haven, CT
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ellen Lyon, M.D. is a Emergency Medicine Physician provider in New Haven, CT (NPI 1093101875).
Provider details
- NPI number
- 1093101875
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 66793 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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)
- Uw Hospitals & Clinics600 Highland AvenueMadison, WI 53792-0001Phone: (608) 890-8682
Registry dates
- Enumerated
- 2015-04-08
- Last updated
- 2018-06-06
Frequently asked questions
- What is Mary Ellen Lyon's NPI number?
- Mary Ellen Lyon's National Provider Identifier (NPI) is 1093101875, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ellen Lyon's specialty?
- Mary Ellen Lyon is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Ellen Lyon located?
- Mary Ellen Lyon's practice location on file with NPPES is Yale Medical School, New Haven, CT 06510.
- What is Mary Ellen Lyon's phone number?
- The practice phone number listed in the NPPES registry for Mary Ellen Lyon is (213) 713-5674.
- Does Mary Ellen Lyon accept Medicare?
- Mary Ellen Lyon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ellen Lyon's NPI active?
- Yes — Mary Ellen Lyon's NPI (1093101875) is active in the NPPES registry as of the last update on 2018-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.