Evelyn Llewellyn, PSY.D.
NPI 1770646424 · Clinical Psychologist · Darien, CT
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Evelyn Llewellyn, PSY.D. is a Clinical Psychologist provider in Darien, CT (NPI 1770646424).
Provider details
- NPI number
- 1770646424
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 009378-1 (NY)
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
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
- 2006-12-17
- Last updated
- 2021-08-24
- Certified
- 2021-08-24
Frequently asked questions
- What is Evelyn Llewellyn's NPI number?
- Evelyn Llewellyn's National Provider Identifier (NPI) is 1770646424, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Evelyn Llewellyn's specialty?
- Evelyn Llewellyn is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Evelyn Llewellyn located?
- Evelyn Llewellyn's practice location on file with NPPES is 6 Musket Ln, Darien, CT 06820-4906.
- What is Evelyn Llewellyn's phone number?
- The practice phone number listed in the NPPES registry for Evelyn Llewellyn is (203) 912-5719.
- Does Evelyn Llewellyn accept Medicare?
- Evelyn Llewellyn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Evelyn Llewellyn's NPI active?
- Yes — Evelyn Llewellyn's NPI (1770646424) is active in the NPPES registry as of the last update on 2021-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.