Amaris Keiser, M.D.
NPI 1427376466 · Neonatal-Perinatal Medicine Physician · Greenwich, CT
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amaris Keiser, M.D. is a Neonatal-Perinatal Medicine Physician provider in Greenwich, CT (NPI 1427376466).
Provider details
- NPI number
- 1427376466
- Entity type
- Individual
- Primary specialty
- Neonatal-Perinatal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- D0082444 (MD)
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
16 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
- 2010-05-14
- Last updated
- 2025-10-30
- Certified
- 2025-10-30
Frequently asked questions
- What is Amaris Keiser's NPI number?
- Amaris Keiser's National Provider Identifier (NPI) is 1427376466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amaris Keiser's specialty?
- Amaris Keiser is listed in the NPPES registry with a primary specialty of Neonatal-Perinatal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Amaris Keiser located?
- Amaris Keiser's practice location on file with NPPES is 5 Perryridge Rd, Greenwich, CT 06830-4608.
- What is Amaris Keiser's phone number?
- The practice phone number listed in the NPPES registry for Amaris Keiser is (203) 863-3513.
- Does Amaris Keiser accept Medicare?
- Amaris Keiser is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amaris Keiser's NPI active?
- Yes — Amaris Keiser's NPI (1427376466) is active in the NPPES registry as of the last update on 2025-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.