Helen Duncan, M.D.
NPI 1194807347 · Psychiatry Physician · Arcadia, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Duncan, M.D. is a Psychiatry Physician provider in Arcadia, CA (NPI 1194807347).
Provider details
- NPI number
- 1194807347
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- G067723 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2006-10-19
- Last updated
- 2020-02-24
- Certified
- 2020-02-24
Frequently asked questions
- What is Helen Duncan's NPI number?
- Helen Duncan's National Provider Identifier (NPI) is 1194807347, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Duncan's specialty?
- Helen Duncan is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Duncan located?
- Helen Duncan's practice location on file with NPPES is 301 W. Huntington Dr., Arcadia, CA 91007-1530.
- What is Helen Duncan's phone number?
- The practice phone number listed in the NPPES registry for Helen Duncan is (626) 445-7430.
- Does Helen Duncan accept Medicare?
- Helen Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Duncan's NPI active?
- Yes — Helen Duncan's NPI (1194807347) is active in the NPPES registry as of the last update on 2020-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.