DOROTHY SLIWONIK
NPI 1386261949
Nurse Anesthetist, Certified Registered in Waterbury, CT
About Dorothy Sliwonik NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DOROTHY SLIWONIK (NPI 1386261949) is an individual nurse anesthetist, certified registered in Waterbury, Connecticut, licensed in Connecticut (000000) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
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
Dorothy Sliwonik 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
6Medicare enrollment records show Dorothy Sliwonik reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hamden, CT 06518
- Reassigned Medicare billing, Connecticut enrollment
- 88 clinicians in this Medicare group
Hartford, CT 06106
- Reassigned Medicare billing, Connecticut enrollment
- 417 clinicians in this Medicare group
Bridgeport, CT 06610
- Reassigned Medicare billing, Connecticut enrollment
- 129 clinicians in this Medicare group
Hartsdale, NY 10530
- Reassigned Medicare billing, New York enrollment
- 142 clinicians in this Medicare group
Putnam, CT 06260
- Reassigned Medicare billing, Connecticut enrollment
- 225 clinicians in this Medicare group
San Diego, CA 92128
- Reassigned Medicare billing, Connecticut enrollment
- 42 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
New York-Presbyterian Hospital
Acute Care Hospitals · New York, NYPhysician 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.
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.
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 Dorothy Sliwonik's NPI number?
The NPI number for Dorothy Sliwonik is 1386261949. It was assigned to this individual provider in the NPPES registry on June 30, 2020.
Where is Dorothy Sliwonik located?
Dorothy Sliwonik practices at 64 Robbins St, Waterbury, CT 06708. The listed phone number is (203) 573-6000.
What is Dorothy Sliwonik's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Dorothy Sliwonik enrolled in Medicare?
Yes. Dorothy Sliwonik 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 Dorothy Sliwonik's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dorothy Sliwonik reassigns Medicare benefits to 6 organizations: Endoscopy Center Of Connecticut, LLC (Hamden, CT), Connecticut Gi PLLC (Hartford, CT), Bridgeport Anesthesia Associates, P.C. (Bridgeport, CT), Singular Anesthesia Services, PLLC (Hartsdale, NY), North American Partners In Anesthesia Connecticut PC (Putnam, CT) and 1 more organization, listed in the Medicare section above. 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 Dorothy Sliwonik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Dorothy Sliwonik affiliated with any hospitals?
According to CMS data, Dorothy Sliwonik is affiliated with New York-Presbyterian Hospital.
When was this NPI record last updated?
The NPPES record for Dorothy Sliwonik was last updated on June 30, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Dorothy Sliwonik · NPI 1386261949
Nurse Anesthetist, Certified Registered physician in Waterbury, Connecticut. Individual provider, active in the CMS NPPES registry since June 30, 2020.
## Identity
- **NPI:** 1386261949 (Entity type: Individual)
- **Enumerated:** June 30, 2020
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 000000 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 64 ROBBINS ST, Waterbury, CT 06708-2613
- **Phone:** (203) 573-6000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Endoscopy Center Of Connecticut, LLC (NPI 1386757854, Hamden, CT); Connecticut Gi PLLC (NPI 1023124625, Hartford, CT); Bridgeport Anesthesia Associates, P.C. (NPI 1174549257, Bridgeport, CT); Singular Anesthesia Services, PLLC (NPI 1881086718, Hartsdale, NY); North American Partners In Anesthesia Connecticut PC (NPI 1316994775, Putnam, CT); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** June 30, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1386261949) · Data from the CMS NPPES public registry.