Michael O'Reilly, M.D.
NPI 1891723995 · Obstetrics & Gynecology Physician · Shelton, CT
Michael O'Reilly, M.D. is a Obstetrics & Gynecology Physician provider in Shelton, CT (NPI 1891723995).
Provider details
- NPI number
- 1891723995
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 031581 (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
- 2006-06-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael O'Reilly's NPI number?
- Michael O'Reilly's National Provider Identifier (NPI) is 1891723995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael O'Reilly's specialty?
- Michael O'Reilly is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Michael O'Reilly located?
- Michael O'Reilly's practice location on file with NPPES is 4 Corporate Dr, Shelton, CT 06484-6211.
- What is Michael O'Reilly's phone number?
- The practice phone number listed in the NPPES registry for Michael O'Reilly is (203) 944-9898.
- Is Michael O'Reilly's NPI active?
- Yes — Michael O'Reilly's NPI (1891723995) 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.