A1 CASE MANAGEMENT
NPI 1679190151
Case Management in Alpena, MI
About A1 Case Management NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
A1 CASE MANAGEMENT (NPI 1679190151) is a healthcare organization registered as a case management in Alpena, Michigan and active in the NPI registry since June 2020. The organization lists Katherine Witkowski, Founder, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
A1 Case Management is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to A1 Case Management, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 A1 Venture LLC's NPI number?
The NPI number for A1 Venture LLC is 1679190151. It was assigned to this organization in the NPPES registry on June 30, 2020. The provider is doing business as A1 Case Management.
Where is A1 Venture LLC located?
A1 Venture LLC is located at 112 W Chisholm St, Alpena, MI 49707. The listed phone number is (989) 340-1645.
What is A1 Venture LLC's specialty?
The primary specialty registered for this NPI is Case Management with taxonomy code 251B00000X.
Is A1 Venture LLC enrolled in Medicare?
Yes. A1 Venture LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through A1 Venture LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Social Worker) reassigns their Medicare billing to A1 Venture LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does A1 Venture LLC accept?
Health plans from Blue Cross Blue Shield of Michigan Mutual Insurance Company list A1 Venture LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for A1 Venture LLC was last updated on July 17, 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.