Heather Duncan, IMF
NPI 1144498189 · Marriage & Family Therapist · Fairfield, CA
Heather Duncan, IMF is a Marriage & Family Therapist provider in Fairfield, CA (NPI 1144498189).
Provider details
- NPI number
- 1144498189
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- IMF
- Sex
- Female
- Sole proprietor
- No
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
18 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
- 2008-02-12
- Last updated
- 2009-02-02
Frequently asked questions
- What is Heather Duncan's NPI number?
- Heather Duncan's National Provider Identifier (NPI) is 1144498189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Heather Duncan's specialty?
- Heather Duncan is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Heather Duncan located?
- Heather Duncan's practice location on file with NPPES is 2500 N Texas St, Fairfield, CA 94533-1639.
- What is Heather Duncan's phone number?
- The practice phone number listed in the NPPES registry for Heather Duncan is (707) 428-4198.
- Is Heather Duncan's NPI active?
- Yes — Heather Duncan's NPI (1144498189) is active in the NPPES registry as of the last update on 2009-02-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.