MICHAEL PAUL TENNYSEN RN
NPI 1225522956
Nurse Anesthetist, Certified Registered in Warsaw, NY
About Michael Paul Tennysen Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL PAUL TENNYSEN RN (NPI 1225522956) is an individual nurse anesthetist, certified registered in Warsaw, New York, licensed in New York (123550) and active in the NPI registry since June 2018. He is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses 2
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
Michael Paul Tennysen Rn 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
3Medicare enrollment records show Michael Tennysen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Warsaw, NY 14569
- Reassigned Medicare billing, New York enrollment
- 25 clinicians in this Medicare group
Geneva, NY 14456
- Reassigned Medicare billing, New York enrollment
- 148 clinicians in this Medicare group
East Syracuse, NY 13057
- Reassigned Medicare billing, New York enrollment
- 84 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 14569 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.
WARSAW, NY 14569
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 Michael Tennysen's NPI number?
The NPI number for Michael Tennysen is 1225522956. It was assigned to this individual provider in the NPPES registry on June 16, 2018.
Where is Michael Tennysen located?
Michael Tennysen practices at 400 N Main St, Warsaw, NY 14569. The listed phone number is (585) 786-2233.
What is Michael Tennysen's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Michael Tennysen enrolled in Medicare?
Yes. Michael Tennysen 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 Michael Tennysen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Tennysen reassigns Medicare benefits to 3 organizations: Upstate New York Medical Professional Corporation (Warsaw, NY), Geneva General Hospital Inc (Geneva, NY) and Syracuse Gastroenterological Associates PC (East Syracuse, NY). 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 Michael Tennysen'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 Michael Tennysen was last updated on March 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Michael Paul Tennysen, RN · NPI 1225522956
Nurse Anesthetist, Certified Registered physician in Warsaw, New York. Individual provider, active in the CMS NPPES registry since June 16, 2018.
## Identity
- **NPI:** 1225522956 (Entity type: Individual)
- **Enumerated:** June 16, 2018
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 123550 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 N MAIN ST, Warsaw, NY 14569-1025
- **Phone:** (585) 786-2233
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Upstate New York Medical Professional Corporation (NPI 1801553128, Warsaw, NY); Geneva General Hospital Inc (NPI 1447635156, Geneva, NY); Syracuse Gastroenterological Associates PC (NPI 1417326661, East Syracuse, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** March 1, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1225522956) · Data from the CMS NPPES public registry.