Sibyl Hewitt, PH.D
NPI 1831738863 · Psychologist · Boulder, CO
Sibyl Hewitt, PH.D is a Psychologist provider in Boulder, CO (NPI 1831738863).
Provider details
- NPI number
- 1831738863
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D
- Sex
- Female
- Sole proprietor
- No
- License
- PSY.0006814 (CO)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
6 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
- 2019-12-20
- Last updated
- 2026-04-27
- Certified
- 2026-04-27
Frequently asked questions
- What is Sibyl Hewitt's NPI number?
- Sibyl Hewitt's National Provider Identifier (NPI) is 1831738863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sibyl Hewitt's specialty?
- Sibyl Hewitt is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Sibyl Hewitt located?
- Sibyl Hewitt's practice location on file with NPPES is 777 29th St Ste 500, Boulder, CO 80303-2357.
- What is Sibyl Hewitt's phone number?
- The practice phone number listed in the NPPES registry for Sibyl Hewitt is (720) 551-8074.
- Is Sibyl Hewitt's NPI active?
- Yes — Sibyl Hewitt's NPI (1831738863) is active in the NPPES registry as of the last update on 2026-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.