TERESA ANN SION DNP, FNP-BC
NPI 1861971558
Nurse Practitioner - Family in Buffalo, NY
About Teresa Ann Sion Dnp, Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TERESA ANN SION DNP, FNP-BC (NPI 1861971558) is an individual family provider in Buffalo, New York, licensed in New York (343093) and active in the NPI registry since August 2018. She is enrolled in Medicare PECOS, is affiliated with Kaleida Health, and is a graduate of Other (2018).
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
Teresa Ann Sion Dnp, Fnp-bc 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 Teresa Sion reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Buffalo, NY 14203
- Reassigned Medicare billing, New York enrollment
- 676 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.
Kaleida Health
Acute Care Hospitals · Buffalo, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14203 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.
BUFFALO, NY 14203
BUFFALO, NY 14203
BUFFALO, NY 14203
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 Teresa Sion's NPI number?
The NPI number for Teresa Sion is 1861971558. It was assigned to this individual provider in the NPPES registry on August 13, 2018.
Where is Teresa Sion located?
Teresa Sion practices at 100 High St, Buffalo, NY 14203. The listed phone number is (716) 859-5600.
What is Teresa Sion's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Teresa Sion enrolled in Medicare?
Yes. Teresa Sion 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 Teresa Sion's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Teresa Sion reassigns Medicare benefits to Kaleida Health (Buffalo, NY). 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 Teresa Sion's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Teresa Sion affiliated with any hospitals?
According to CMS data, Teresa Sion is affiliated with Kaleida Health.
When was this NPI record last updated?
The NPPES record for Teresa Sion was last updated on August 13, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Teresa Ann Sion, DNP, FNP-BC · NPI 1861971558
Family physician in Buffalo, New York. Individual provider, active in the CMS NPPES registry since August 13, 2018.
## Identity
- **NPI:** 1861971558 (Entity type: Individual)
- **Enumerated:** August 13, 2018
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 343093 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 HIGH ST, Buffalo, NY 14203-1126
- **Phone:** (716) 859-5600
## 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:** Kaleida Health (NPI 1427870070, Buffalo, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** August 13, 2018
---
Source: [NPI Profile](https://npiprofile.com/npi/1861971558) · Data from the CMS NPPES public registry.