Marcy Duncan, M.D.
NPI 1427000223 · Pediatrics Physician · Lexington, KY
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcy Duncan, M.D. is a Pediatrics Physician provider in Lexington, KY (NPI 1427000223).
Provider details
- NPI number
- 1427000223
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD0000040774 (TN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-05-17
- Last updated
- 2016-09-21
Frequently asked questions
- What is Marcy Duncan's NPI number?
- Marcy Duncan's National Provider Identifier (NPI) is 1427000223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcy Duncan's specialty?
- Marcy Duncan is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Marcy Duncan located?
- Marcy Duncan's practice location on file with NPPES is 2400 Greatstone PT, Lexington, KY 40504-3274.
- What is Marcy Duncan's phone number?
- The practice phone number listed in the NPPES registry for Marcy Duncan is (859) 323-6211.
- Does Marcy Duncan accept Medicare?
- Marcy Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcy Duncan's NPI active?
- Yes — Marcy Duncan's NPI (1427000223) is active in the NPPES registry as of the last update on 2016-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.