DR. SARAH CAROL FIALLO MD
NPI 1780189092
Family Medicine in Westport, CT
About Dr. Sarah Carol Fiallo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SARAH CAROL FIALLO MD (NPI 1780189092) is an individual family medicine provider in Westport, Connecticut, licensed in Connecticut (69293) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Sarah Carol Fiallo Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Sarah Fiallo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fairfield, CT 06824
- Reassigned Medicare billing, Connecticut enrollment
- 1,824 clinicians in this Medicare group
Darien, CT 06820
- Reassigned Medicare billing, Connecticut enrollment
- 9 clinicians in this Medicare group
Manhasset, NY 11030
- Reassigned Medicare billing, New York enrollment
- 99 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06880 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Sarah Fiallo's NPI number?
The NPI number for Sarah Fiallo is 1780189092. It was assigned to this individual provider in the NPPES registry on March 28, 2018. The provider is also known as Dr. Sarah Carol Lall MD.
Where is Sarah Fiallo located?
Sarah Fiallo practices at 20 Elm St, Westport, CT 06880. The listed phone number is (888) 663-6331.
What is Sarah Fiallo's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Sarah Fiallo enrolled in Medicare?
Yes. Sarah Fiallo is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Sarah Fiallo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Fiallo reassigns Medicare benefits to 3 organizations: Northeast Medical Group, Inc (Fairfield, CT), Hhc One Medical, LLC (Darien, CT) and Mount Sinai School Of Medicine (Manhasset, NY). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sarah Fiallo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sarah Fiallo accept?
Health plans from Anthem Blue Cross and Blue Shield list Sarah Fiallo as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Sarah Fiallo was last updated on August 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Sarah Carol Fiallo, MD · NPI 1780189092
Family Medicine physician in Westport, Connecticut. Individual provider, active in the CMS NPPES registry since March 28, 2018.
## Identity
- **NPI:** 1780189092 (Entity type: Individual)
- **Enumerated:** March 28, 2018
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 69293 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 20 ELM ST, Westport, CT 06880-3305
- **Phone:** (888) 663-6331 · **Fax:** (203) 604-1053
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Northeast Medical Group, Inc (NPI 1366745267, Fairfield, CT); Hhc One Medical, LLC (NPI 1639881956, Darien, CT); Mount Sinai School Of Medicine (NPI 1144659749, Manhasset, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** August 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1780189092) · Data from the CMS NPPES public registry.