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Maryellen O'Reilly, M.D.
NPI 1780851808 · General Practice Physician · Irvine, CA
Maryellen O'Reilly, M.D. is a General Practice Physician provider in Irvine, CA (NPI 1780851808).
Provider details
- NPI number
- 1780851808
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G63194 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
60 Discovery
Irvine, CA 92618-3105
Phone: (949) 586-9904
Fax: (949) 586-7816
Street-level locationGet directions
Mailing address
60 Discovery
Irvine, CA 92618-3105
Registry dates
- Enumerated
- 2008-05-08
- Last updated
- 2008-05-08
Frequently asked questions
- What is Maryellen O'Reilly's NPI number?
- Maryellen O'Reilly's National Provider Identifier (NPI) is 1780851808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryellen O'Reilly's specialty?
- Maryellen O'Reilly is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Maryellen O'Reilly located?
- Maryellen O'Reilly's practice location on file with NPPES is 60 Discovery, Irvine, CA 92618-3105.
- What is Maryellen O'Reilly's phone number?
- The practice phone number listed in the NPPES registry for Maryellen O'Reilly is (949) 586-9904.
- Is Maryellen O'Reilly's NPI active?
- Yes — Maryellen O'Reilly's NPI (1780851808) is active in the NPPES registry as of the last update on 2008-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.