Quick answers
- Where does Sarah Fiallo see patients?
- Medicare's clinician data lists 2 practice locations, including Darien, CT and New Canaan, CT. Call before your visit to confirm the address.
- What is Sarah Fiallo's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Sarah Fiallo accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah Fiallo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Sarah Fiallo offer telehealth?
- Medicare's clinician data says Sarah Fiallo offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Sarah Fiallo?
- (888) 663-6331, as listed in official Medicare / NPI Registry data.
- What is Sarah Fiallo's NPI number?
- 1780189092. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Sarah Fiallo is enrolled with Medicare (CMS data updated 2026-10-02).
- 104 Heights Rd, Suite R103Darien, CT 06820 (888) 663‑6331
- 22 Pine StNew Canaan, CT 06840 (888) 663‑6331
Group practices
Medicare enrollment lists Sarah Fiallo as a member of this group (CMS data updated 2026-10-02).
- HHC One Medical, LLC7 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Darien
Clinicians with the same Medicare primary specialty in Darien, CT — not a recommendation.
Clinician information
| Graduation year | 2015 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1780189092 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians