A1 CASE MANAGEMENT
NPI 1679190151
Case Management in Alpena, MI

Active since June 30, 2020
112 W CHISHOLM ST, ALPENA, MI 49707(989) 340-1645 Get Directions Write a Review

NPPES record last updated: July 17, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 17, 2020, Jul 7, 2020, Jul 2, 2020 (3 updates tracked since 2020).

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

NPI1679190151
Entity TypeOrganization
Primary Taxonomy251B00000X
Legal Business NameA1 VENTURE LLC
Location Address112 W CHISHOLM STAlpena, MI 49707-2446
Mailing Address350 N 2nd Ave Unit 678Alpena, MI 49707-6229 · (989) 340-1645
Organization SubpartNo
Authorized OfficialKatherine WitkowskiFounder · (989) 340-1645
Enumeration DateJune 30, 2020
Last NPPES UpdateJuly 17, 20203 updates tracked since enumeration
NPPES CertifiedJuly 17, 2020
✔ NPI 1679190151 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCase ManagementAgencies
Taxonomy Code251B00000X
Definition
An organization that is responsible for providing case management services. The agency provides services which assist an individual in gaining access to needed medical, social, educational, and/or other services. Case management services may be used to locate, coordinate, and monitor necessary appropriate services. It may be used to encourage the use of cost-effective medical care by referrals to appropriate providers and to discourage over utilization of costly services. Case management may also serve to provide necessary coordination of non-medical services such as vocational rehabilitation, education, employment, when the services provided enable the individual to function at the highest level.
Also ListedSocial WorkerTaxonomy 104100000X
112 W CHISHOLM ST, Alpena, MI 49707

Other Names 1

Doing Business AsA1 Case Management

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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)

Clinical Social Worker
NPI 1982122081
400 JOHNSON ST
Alpena, MI 49707
(989) 356-7857
✔ PECOS✔ Accepts Medicare1.4 mi

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.