John Lee Duncan
NPI 1174922637 · Marriage & Family Therapist · Sacramento, CA
John Lee Duncan is a Marriage & Family Therapist provider in Sacramento, CA (NPI 1174922637).
Provider details
- NPI number
- 1174922637
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
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
11 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
Mailing address
Registry dates
- Enumerated
- 2014-08-20
- Last updated
- 2014-08-20
Frequently asked questions
- What is John Lee Duncan's NPI number?
- John Lee Duncan's National Provider Identifier (NPI) is 1174922637, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Lee Duncan's specialty?
- John Lee Duncan is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is John Lee Duncan located?
- John Lee Duncan's practice location on file with NPPES is 5523 34th St, Sacramento, CA 95820-4725.
- What is John Lee Duncan's phone number?
- The practice phone number listed in the NPPES registry for John Lee Duncan is (916) 452-3601.
- Is John Lee Duncan's NPI active?
- Yes — John Lee Duncan's NPI (1174922637) is active in the NPPES registry as of the last update on 2014-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.