Mary O'Connor, M.D.
NPI 1326199555 · Pediatrics Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary O'Connor, M.D. is a Pediatrics Physician provider in Cleveland, OH (NPI 1326199555).
Provider details
- NPI number
- 1326199555
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 35072295 (OH)
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
- 2007-01-15
- Last updated
- 2018-06-28
Frequently asked questions
- What is Mary O'Connor's NPI number?
- Mary O'Connor's National Provider Identifier (NPI) is 1326199555, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary O'Connor's specialty?
- Mary O'Connor is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Mary O'Connor located?
- Mary O'Connor's practice location on file with NPPES is Cleveland Clinic-Fairview Hospital, 18101 Lorain Avenue, Cleveland, OH 44111-5612.
- What is Mary O'Connor's phone number?
- The practice phone number listed in the NPPES registry for Mary O'Connor is (216) 476-7312.
- Does Mary O'Connor accept Medicare?
- Mary O'Connor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary O'Connor's NPI active?
- Yes — Mary O'Connor's NPI (1326199555) is active in the NPPES registry as of the last update on 2018-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.