Mark Nowaczewski
Mark Nowaczewski is a Addiction (Substance Use Disorder) Counselor provider (Counselor) practicing in Vassar, MI, registered in the NPPES registry with NPI 1417313115 since 2016.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1417313115 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark Nowaczewski |
| Sex | Male |
| Practice address | Vassar, MI, 48768 |
| Phone | 9898230183 |
| Enumeration date | 2016-01-11 |
| Last updated in NPPES | 2016-01-11 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YA0400X | Addiction (Substance Use Disorder) Counselor | Primary | — | — |
Copy-ready billing details
Provider: Mark Nowaczewski NPI: 1417313115 Taxonomy: 101YA0400X (Addiction (Substance Use Disorder) Counselor) Address: Vassar, MI, 48768
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1891978441 | Wolverine Human Services | Organization | Children's Substance Abuse Rehabilitation Facility | Vassar, MI |
| 1285819532 | Katrina Brock | Individual | Clinical Social Worker | Vassar, MI |
| 1285819482 | James Furbush | Individual | Social Worker | Vassar, MI |
| 1972788198 | Michael Buck | Individual | Clinical Social Worker | Vassar, MI |
| 1578748786 | James Tumidanski | Individual | Social Worker | Vassar, MI |
| 1316122534 | Keith Asbury | Individual | Social Worker | Vassar, MI |
| 1467638304 | Gina Zerka | Individual | Clinical Social Worker | Vassar, MI |
| 1316123938 | Roy Brewer | Individual | Addiction (Substance Use Disorder) Counselor | Vassar, MI |
Verify this record
Cross-check NPI 1417313115 against the authoritative CMS record: view Mark Nowaczewski on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
Is NPI 1417313115 active?
How do I verify Mark Nowaczewski's NPI record?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-01-11.