MAISIE ALIE ORSILLO DO
NPI 1083233639
Internal Medicine in New Haven, CT
About Maisie Alie Orsillo Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAISIE ALIE ORSILLO DO (NPI 1083233639) is an individual internal medicine provider in New Haven, Connecticut, licensed in Connecticut (74929) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
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
Maisie Alie Orsillo Do 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
2Medicare enrollment records show Maisie Orsillo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 clinicians in this Medicare group
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 468 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 06510 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW HAVEN, CT 06510
NEW HAVEN, CT 06510
NEW HAVEN, CT 06510
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 Maisie Orsillo's NPI number?
The NPI number for Maisie Orsillo is 1083233639. It was assigned to this individual provider in the NPPES registry on April 14, 2020.
Where is Maisie Orsillo located?
Maisie Orsillo practices at 20 York St, New Haven, CT 06510. The listed phone number is (203) 688-4242.
What is Maisie Orsillo's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Maisie Orsillo enrolled in Medicare?
Yes. Maisie Orsillo 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 Maisie Orsillo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maisie Orsillo reassigns Medicare benefits to 2 organizations: Yale University (New Haven, CT) and Cornell Scott Hill Health Corporation (New Haven, CT). 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 Maisie Orsillo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Maisie Orsillo accept?
Health plans from Anthem Blue Cross and Blue Shield list Maisie Orsillo 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 Maisie Orsillo was last updated on June 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Maisie Alie Orsillo, DO · NPI 1083233639
Internal Medicine physician in New Haven, Connecticut. Individual provider, active in the CMS NPPES registry since April 14, 2020.
## Identity
- **NPI:** 1083233639 (Entity type: Individual)
- **Enumerated:** April 14, 2020
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 74929 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 20 YORK ST, New Haven, CT 06510-3220
- **Phone:** (203) 688-4242
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Yale University (NPI 1124148887, New Haven, CT); Cornell Scott Hill Health Corporation (NPI 1902921380, New Haven, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** June 11, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1083233639) · Data from the CMS NPPES public registry.