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JOHN HALLOCK M.A.
NPI 1861940751
Counselor - Mental Health in Hadley, MA

Active since September 20, 2016PECOS EnrolledAccepts Medicare Assignment
95 MOUNT WARNER RD, HADLEY, MA 01035(314) 549-8874 Get Directions Write a Review

NPPES record last updated: April 3, 2019. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 3, 2019, Sep 20, 2016 (2 updates tracked since 2016).

About John Hallock M.a. NPPES

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

JOHN HALLOCK M.A. (NPI 1861940751) is an individual mental health provider in Hadley, Massachusetts, licensed in Massachusetts (10913) and active in the NPI registry since September 2016. He is enrolled in Medicare PECOS and is a graduate of Other (2016).

NPPES Registry Identity

NPI1861940751
Entity TypeIndividualMale
Primary Taxonomy101YM0800X
Provider Legal NameJOHN HALLOCKCredential: M.A.
Location Address95 MOUNT WARNER RDHadley, MA 01035-9699
Mailing Address95 Mount Warner RdHadley, MA 01035-9699 · (314) 549-8874
Phone(314) 549-8874
Sole ProprietorNo
Medical School CMSOtherGraduated 2016
Enumeration DateSeptember 20, 2016
Last NPPES UpdateApril 3, 20192 updates tracked since enumeration
✔ NPI 1861940751 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 · 10913
95 MOUNT WARNER RD, Hadley, MA 01035
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Hallock M.a. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3971954843
PECOS Enrollment IDI20240105000217
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 Reassignments

2

Medicare enrollment records show John Hallock reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Servicenet Inc
4.9 mi
Mental Health (Including Community Mental Health Center)
50 PLEASANT ST
Northampton, MA 01060
  • Reassigned Medicare billing, Massachusetts enrollment
  • 64 clinicians in this Medicare group
NPI 1659314425 (413) 584-6855
River Valley Counseling Center, Inc
12 mi
Mental Health (Including Community Mental Health Center)
303 BEECH ST
Holyoke, MA 01040
  • Reassigned Medicare billing, Massachusetts enrollment
  • 144 clinicians in this Medicare group
NPI 1851444616 (413) 540-1234

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 John Hallock's NPI number?

The NPI number for John Hallock is 1861940751. It was assigned to this individual provider in the NPPES registry on September 20, 2016.

Where is John Hallock located?

John Hallock practices at 95 Mount Warner Rd, Hadley, MA 01035. The listed phone number is (314) 549-8874.

What is John Hallock's specialty?

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

Is John Hallock enrolled in Medicare?

Yes. John Hallock is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for John Hallock's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Hallock reassigns Medicare benefits to 2 organizations: Servicenet Inc (Northampton, MA) and River Valley Counseling Center, Inc (Holyoke, MA). Each 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 John Hallock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for John Hallock was last updated on April 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.