COLLEEN MARILYN SINNOTT MD
NPI 1295239580
Obstetrics & Gynecology - Maternal & Fetal Medicine in New Haven, CT
About Colleen Marilyn Sinnott Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
COLLEEN MARILYN SINNOTT MD (NPI 1295239580) is an individual maternal & fetal medicine provider in New Haven, Connecticut, licensed in Connecticut (70727) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Harvard Medical School (2022).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Colleen Marilyn Sinnott 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 Reassignment
Medicare enrollment records show Colleen Sinnott reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New Haven, CT 06519
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06511 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW HAVEN, CT 06511
NEW HAVEN, CT 06511
NEW HAVEN, CT 06511
NEW HAVEN, CT 06511
NEW HAVEN, CT 06511
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 Colleen Sinnott's NPI number?
The NPI number for Colleen Sinnott is 1295239580. It was assigned to this individual provider in the NPPES registry on March 21, 2018.
Where is Colleen Sinnott located?
Colleen Sinnott practices at 1 Long Wharf Dr Fl 2, New Haven, CT 06511. The listed phone number is (601) 820-3688.
What is Colleen Sinnott's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Colleen Sinnott enrolled in Medicare?
Yes. Colleen Sinnott 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 organization bills Medicare for Colleen Sinnott's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Colleen Sinnott reassigns Medicare benefits to Yale University (New Haven, CT). The 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 Colleen Sinnott's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Colleen Sinnott was last updated on September 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.
# Colleen Marilyn Sinnott, MD · NPI 1295239580
Maternal & Fetal Medicine physician in New Haven, Connecticut. Individual provider, active in the CMS NPPES registry since March 21, 2018.
## Identity
- **NPI:** 1295239580 (Entity type: Individual)
- **Enumerated:** March 21, 2018
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** 70727 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1 LONG WHARF DR FL 2, New Haven, CT 06511-5991
- **Phone:** (601) 820-3688
## 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:** Yale University (NPI 1124148887, New Haven, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Harvard Medical School, class of 2022
## Record status
- **NPPES last updated:** September 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1295239580) · Data from the CMS NPPES public registry.