Kevin O'Brien, M.D.
NPI 1134131733 · Allergy & Immunology (Internal Medicine) Physician · Thornton, CO
Kevin O'Brien, M.D. is a Allergy & Immunology (Internal Medicine) Physician provider in Thornton, CO (NPI 1134131733).
Provider details
- NPI number
- 1134131733
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 42142 (CO)
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
- 2006-08-12
- Last updated
- 2010-01-15
Frequently asked questions
- What is Kevin O'Brien's NPI number?
- Kevin O'Brien's National Provider Identifier (NPI) is 1134131733, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kevin O'Brien's specialty?
- Kevin O'Brien is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Kevin O'Brien located?
- Kevin O'Brien's practice location on file with NPPES is 3260 E 104th Ave, Thornton, CO 80233-4406.
- What is Kevin O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Kevin O'Brien is (720) 929-8300.
- Is Kevin O'Brien's NPI active?
- Yes — Kevin O'Brien's NPI (1134131733) is active in the NPPES registry as of the last update on 2010-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.