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Karen O'Brien, D.C.
NPI 1548558372 · Chiropractor · Nevada City, CA
Karen O'Brien, D.C. is a Chiropractor provider in Nevada City, CA (NPI 1548558372).
Provider details
- NPI number
- 1548558372
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- D.C.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 22424 (CA)
Specialties & taxonomies
Chiropractic Providers
Profile Score
Detailed profile(81/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
206 Sacramento St
Ste 210
Nevada City, CA 95959-2633
Phone: (530) 277-9327
Street-level locationGet directions
Mailing address
Po Box 2642
Nevada City, CA 95959-1951
Registry dates
- Enumerated
- 2011-07-14
- Last updated
- 2016-11-29
Frequently asked questions
- What is Karen O'Brien's NPI number?
- Karen O'Brien's National Provider Identifier (NPI) is 1548558372, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen O'Brien's specialty?
- Karen O'Brien is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Karen O'Brien located?
- Karen O'Brien's practice location on file with NPPES is 206 Sacramento St, Nevada City, CA 95959-2633.
- What is Karen O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Karen O'Brien is (530) 277-9327.
- Is Karen O'Brien's NPI active?
- Yes — Karen O'Brien's NPI (1548558372) is active in the NPPES registry as of the last update on 2016-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.