KERT D SABBATH MD
NPI 1831121052
Internal Medicine - Hematology & Oncology in Waterbury, CT
About Kert D Sabbath Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KERT D SABBATH MD (NPI 1831121052) is an individual hematology & oncology provider in Waterbury, Connecticut, licensed in Connecticut (027922) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Boston University School Of Medicine (1979).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Kert D Sabbath 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 Kert Sabbath reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hamden, CT 06514
- 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.
Areas of Expertise CMS Part B claims 4
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 06708 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.
WATERBURY, CT 06708
WATERBURY, CT 06708
WATERBURY, CT 06708
WATERBURY, CT 06708
WATERBURY, CT 06708
WATERBURY, CT 06708
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 Kert Sabbath's NPI number?
The NPI number for Kert Sabbath is 1831121052. It was assigned to this individual provider in the NPPES registry on July 7, 2006.
Where is Kert Sabbath located?
Kert Sabbath practices at 1075 Chase Pkwy Suite B, Waterbury, CT 06708. The listed phone number is (203) 755-6311.
What is Kert Sabbath's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Kert Sabbath enrolled in Medicare?
Yes. Kert Sabbath 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 Kert Sabbath's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kert Sabbath reassigns Medicare benefits to Yale University (Hamden, 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 Kert Sabbath'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 Kert Sabbath was last updated on December 21, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Kert D Sabbath, MD · NPI 1831121052
Hematology & Oncology physician in Waterbury, Connecticut. Individual provider, active in the CMS NPPES registry since July 7, 2006.
## Identity
- **NPI:** 1831121052 (Entity type: Individual)
- **Enumerated:** July 7, 2006
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** 027922 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 1075 CHASE PKWY, SUITE B, Waterbury, CT 06708-2948
- **Phone:** (203) 755-6311 · **Fax:** (203) 755-6263
## 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 1134391824, Hamden, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Boston University School Of Medicine, class of 1979
## Record status
- **NPPES last updated:** December 21, 2011
- **Other identifiers:** Medicaid 001279223 (CT); Medicare UPIN A67913; Medicare ID-Type Unspecified 830000055 (CT)
---
Source: [NPI Profile](https://npiprofile.com/npi/1831121052) · Data from the CMS NPPES public registry.