IndividualActive
David Duncan, PSY.D.
NPI 1558589267 · Clinical Psychologist · Naperville, IL
David Duncan, PSY.D. is a Clinical Psychologist provider in Naperville, IL (NPI 1558589267).
Provider details
- NPI number
- 1558589267
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(83/100 index)
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
83% 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
1555 N Naperville Wheaton Rd
#115
Naperville, IL 60563-1557
Phone: (630) 375-7634
Street-level locationGet directions
Mailing address
2026 Colonial St
Aurora, IL 60503-4771
Registry dates
- Enumerated
- 2007-04-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is David Duncan's NPI number?
- David Duncan's National Provider Identifier (NPI) is 1558589267, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Duncan's specialty?
- David Duncan is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is David Duncan located?
- David Duncan's practice location on file with NPPES is 1555 N Naperville Wheaton Rd, Naperville, IL 60563-1557.
- What is David Duncan's phone number?
- The practice phone number listed in the NPPES registry for David Duncan is (630) 375-7634.
- Is David Duncan's NPI active?
- Yes — David Duncan's NPI (1558589267) 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.