Kathleen O'Brien, NP
NPI 1396800900 · Family Nurse Practitioner · Elk Grove, CA
Kathleen O'Brien, NP is a Family Nurse Practitioner provider in Elk Grove, CA (NPI 1396800900).
Provider details
- NPI number
- 1396800900
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 320768 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
- 2006-12-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is Kathleen O'Brien's NPI number?
- Kathleen O'Brien's National Provider Identifier (NPI) is 1396800900, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen O'Brien's specialty?
- Kathleen O'Brien is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Kathleen O'Brien located?
- Kathleen O'Brien's practice location on file with NPPES is 9201 Big Horn Blvd, Elk Grove, CA 95758-1240.
- What is Kathleen O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Kathleen O'Brien is (916) 478-5130.
- Is Kathleen O'Brien's NPI active?
- Yes — Kathleen O'Brien's NPI (1396800900) 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.