Jonathan Chack, M.A.
Jonathan Chack is a Mental Health Counselor provider (Counselor) practicing in Ayer, MA, registered in the NPPES registry with NPI 1922312347 since 2010.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1922312347 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Jonathan Chack |
| Credential | M.A. |
| Sex | Male |
| Practice address | Ayer, MA, 01432 |
| Phone | 9784641048 |
| Enumeration date | 2010-07-27 |
| Last updated in NPPES | 2014-01-14 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YM0800X | Mental Health Counselor | Primary | 7572 | MA |
Copy-ready billing details
Provider: Jonathan Chack, M.A. NPI: 1922312347 Taxonomy: 101YM0800X (Mental Health Counselor) Address: Ayer, MA, 01432
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1316379563 | Ayer Integrative Therapies | Organization | Mental Health Clinic/Center (Including Community Mental Health Center) | Ayer, MA |
| 1851713648 | Ayer Integrative Therapies | Organization | Child & Adolescent Psychiatry Physician | Ayer, MA |
Verify this record
Cross-check NPI 1922312347 against the authoritative CMS record: view Jonathan Chack 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 this the official NPI registry?
What specialty is Jonathan Chack?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-01-14.