JONATHAN CHACK M.A.
NPI 1922312347
Counselor - Mental Health in Ayer, MA

Q: What is Jonathan Chack's NPI number?

The NPI number for Jonathan Chack is 1922312347. It was assigned to this individual provider in the NPPES registry on July 27, 2010.

Q: What is Jonathan Chack's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Q: When was this NPI record last updated?

The NPPES record for Jonathan Chack was last updated on January 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since July 27, 2010PECOS Enrolled

10 EAST ST, AYER, MA 01432(978) 464-1048 Get Directions Write a Review

NPPES record last updated: January 14, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Jonathan Chack M.a. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JONATHAN CHACK M.A. (NPI 1922312347) is an individual mental health provider in Ayer, Massachusetts, licensed in Massachusetts (7572) and active in the NPI registry since July 2010. He is enrolled in Medicare PECOS and is a graduate of Other (1993).

NPPES Registry Identity

NPI1922312347

Entity TypeIndividualMale

Primary Taxonomy101YM0800X

Provider Legal NameJONATHAN CHACKCredential: M.A.

Location Address10 EAST STAyer, MA 01432-1805

Mailing Address10 East StAyer, MA 01432-1805 · (978) 464-1048

Phone(978) 464-1048

Sole ProprietorYes

Medical School CMSOtherGraduated 1993

Enumeration DateJuly 27, 2010

Last NPPES UpdateJanuary 14, 2014

✔ NPI 1922312347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers

Taxonomy Code101YM0800X

License✔ Licensed in MA · 7572

10 EAST ST, Ayer, MA 01432

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jonathan Chack M.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4385095637

PECOS Enrollment IDI20240110004796

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Jonathan Chack reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Forensic Consultation & Counseling Service

101 mi

Addiction (Substance Use Disorder)

135 GRANGER ST
Rutland, VT 05701

Reassigned Medicare billing, Vermont enrollment
6 clinicians in this Medicare group

NPI 1083997563 (802) 772-0700

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AYER INTEGRATIVE THERAPIES

Clinic/Center (Mental Health (Including Community Mental Health Center))

10 EAST ST
AYER, MA 01432

Middlesex County (978) 480-0003

AYER INTEGRATIVE THERAPIES

Psychiatry & Neurology (Child & Adolescent Psychiatry)

10 EAST ST
AYER, MA 01432

Middlesex County (978) 480-0003

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 Jonathan Chack's NPI number?

The NPI number for Jonathan Chack is 1922312347. It was assigned to this individual provider in the NPPES registry on July 27, 2010.

Where is Jonathan Chack located?

Jonathan Chack practices at 10 East St, Ayer, MA 01432. The listed phone number is (978) 464-1048.

What is Jonathan Chack's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Jonathan Chack enrolled in Medicare?

Yes. Jonathan Chack is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jonathan Chack's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Chack reassigns Medicare benefits to Forensic Consultation & Counseling Service (Rutland, VT). The 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 Jonathan Chack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jonathan Chack accept?

Health plans from Harvard Pilgrim Health Care list Jonathan Chack 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 Jonathan Chack was last updated on January 14, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.