Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Matthew A Stack, PA C
Physician Assistant in Ithaca, MI · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1033108667
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Matthew A Stack
Credential PA C
Sex Male
Practice address 121 N Pine River St, Ithaca, MI, 48847
Phone (989) 287-0662
Enumeration date Oct 17, 2005
Last updated in NPPES Feb 5, 2026
Taxonomy & licenses
103T00000X Psychologist Behavioral Health & Social Service Providers · License 6301007939 (MI) Secondary
363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 2782 (AZ) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 5601003961 (MI) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| P00140431 | Other | AZ | RAILROAD |
| 0852900260 | Other | MI | BCBSM |
| 762246 | Medicaid | AZ | - |
| 50155318 | Other | NM | MEDICAID |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1033108667 active?
Yes, as of the latest NPPES snapshot, NPI 1033108667 is active (record last updated 2026-02-05).
How do I verify Matthew Stack's NPI record?
Cross-check NPI 1033108667 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Michael Stack MD PC Rural Health Clinic/Center · Ithaca, MI NPI 1376580175 Michael Stack Family Medicine Physician · Ithaca, MI NPI 1932146685 Elizabeth Hackert-Neff Professional Counselor · Ithaca, MI NPI 1528210366 Mymichigan Medical Center Alma Rural Health Clinic/Center · Ithaca, MI NPI 1538301668 Cora Pavlik Family Nurse Practitioner · Ithaca, MI NPI 1043704133 Aubree Akers Family Nurse Practitioner · Ithaca, MI NPI 1982321378 Trauma and Addiction Solutions Pllc Mental Health Clinic/Center (Including Community Mental Health Center) · Ithaca, MI NPI 1174381974
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-05.