Madeline Duncan, DC
NPI 1841016938 · Chiropractor · Danville, CA
Enrolled with Medicare as Practitioner - Chiropractic · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Madeline Duncan, DC is a Chiropractor provider in Danville, CA (NPI 1841016938).
Provider details
- NPI number
- 1841016938
- Entity type
- Individual
- Primary specialty
- ChiropractorChiropractic Providers
- Credential
- DC
- Sex
- Female
- Sole proprietor
- No
- License
- DC37081 (CA)
Specialties & taxonomies
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 565 Sycamore Valley Rd WDanville, CA 94526-3900Phone: (925) 837-5595
Registry dates
- Enumerated
- 2024-11-23
- Last updated
- 2024-11-23
- Certified
- 2024-11-23
Frequently asked questions
- What is Madeline Duncan's NPI number?
- Madeline Duncan's National Provider Identifier (NPI) is 1841016938, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Madeline Duncan's specialty?
- Madeline Duncan is listed in the NPPES registry with a primary specialty of Chiropractor (Chiropractic Providers).
- Where is Madeline Duncan located?
- Madeline Duncan's practice location on file with NPPES is 318 Diablo Rd Ste 245, Danville, CA 94526-3464.
- What is Madeline Duncan's phone number?
- The practice phone number listed in the NPPES registry for Madeline Duncan is (925) 290-1830.
- Does Madeline Duncan accept Medicare?
- Madeline Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Madeline Duncan's NPI active?
- Yes — Madeline Duncan's NPI (1841016938) is active in the NPPES registry as of the last update on 2024-11-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.