Dennis O'Malley, M.D.
NPI 1184681223 · Clinical Pathology/Laboratory Medicine Physician · Aliso Viejo, CA
Dennis O'Malley, M.D. is a Clinical Pathology/Laboratory Medicine Physician provider in Aliso Viejo, CA (NPI 1184681223).
Provider details
- NPI number
- 1184681223
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 01056459A (IN)
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
20 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
- 2006-05-01
- Last updated
- 2011-09-02
Frequently asked questions
- What is Dennis O'Malley's NPI number?
- Dennis O'Malley's National Provider Identifier (NPI) is 1184681223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis O'Malley's specialty?
- Dennis O'Malley is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dennis O'Malley located?
- Dennis O'Malley's practice location on file with NPPES is 31 Columbia, Aliso Viejo, CA 92656-1460.
- What is Dennis O'Malley's phone number?
- The practice phone number listed in the NPPES registry for Dennis O'Malley is (949) 425-5832.
- Is Dennis O'Malley's NPI active?
- Yes — Dennis O'Malley's NPI (1184681223) is active in the NPPES registry as of the last update on 2011-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.