Karen Fiester, PH.D.
NPI 1831119569 · Clinical Psychologist · Boulder, CO
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Fiester, PH.D. is a Clinical Psychologist provider in Boulder, CO (NPI 1831119569).
Provider details
- NPI number
- 1831119569
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 828 (CO)
Specialties & taxonomies
Behavioral Health & Social Service 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
- 2006-07-19
- Last updated
- 2007-07-09
Frequently asked questions
- What is Karen Fiester's NPI number?
- Karen Fiester's National Provider Identifier (NPI) is 1831119569, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Fiester's specialty?
- Karen Fiester is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Karen Fiester located?
- Karen Fiester's practice location on file with NPPES is 1113 Spruce St, Boulder, CO 80302-4001.
- What is Karen Fiester's phone number?
- The practice phone number listed in the NPPES registry for Karen Fiester is (303) 449-3028.
- Does Karen Fiester accept Medicare?
- Karen Fiester is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Fiester's NPI active?
- Yes — Karen Fiester's NPI (1831119569) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.