JOANNA CATHERINE GROSSKOPF FNP
NPI 1902438039
Nurse Practitioner - Family in Williamsville, NY
About Joanna Catherine Grosskopf Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOANNA CATHERINE GROSSKOPF FNP (NPI 1902438039) is an individual family provider in Williamsville, New York, licensed in New York (345394) and active in the NPI registry since February 2020. She is enrolled in Medicare PECOS.
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 (PECOS)
Joanna Catherine Grosskopf Fnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Joanna Grosskopf reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Dunkirk, NY 14048
- Reassigned Medicare billing, New York enrollment
- 572 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 14221 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Joanna Grosskopf's NPI number?
The NPI number for Joanna Grosskopf is 1902438039. It was assigned to this individual provider in the NPPES registry on February 6, 2020.
Where is Joanna Grosskopf located?
Joanna Grosskopf practices at 18 Limestone Dr Ste 5, Williamsville, NY 14221. The listed phone number is (716) 632-1400.
What is Joanna Grosskopf's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Joanna Grosskopf enrolled in Medicare?
Yes. Joanna Grosskopf is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Joanna Grosskopf's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joanna Grosskopf reassigns Medicare benefits to General Physician, PC (Dunkirk, 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 Joanna Grosskopf'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 Joanna Grosskopf was last updated on June 23, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.