GREGORY OBRIEN – Mental Health Counselor, NPI 1114793627

GREGORY OBRIEN is a healthcare provider. based in New lenox, Illinois. specializing in CLINICAL SOCIAL WORKER. The NPI Number for GREGORY OBRIEN is 1114793627

Main info

Male
Sole Proprietor
26 Years Of Experience
Accepts Medicare Assignment
Name
GREGORY OBRIEN
NPI
1114793627
Phone
(708) 297-4182
Address
750 WILDWOOD DR
Enumeration Date
27 November 2023
Last Update Date
27 November 2023

Doctor Profile

Medical School Name
OTHER
Secondary Phone
7082691516
Graduation Year
2000 (26 years ago)
PAC ID
0648706671
Group Practice PAC ID
3971997735
Professional Enrollment ID
I20250626001708
Address ID
IL604231279FR10217HWYX400
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience19
Completeness75
Years active:2State licenses:0Digital endpointsOther names

3,510 CLINICAL SOCIAL WORKER in IL

Provider Addresses for GREGORY OBRIEN

  • 750 WILDWOOD DR

    NEW LENOX, IL 604513358

    Phone: (708) 297-4182

    Type: Mailing

  • 10221 W LINCOLN HWY

    FRANKFORT, IL 604231279

    Phone: (815) 806-7560

    Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2025-06-26

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

1

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

  1. Medicare enrolled
  2. On CMS revalidation list
  3. Due date assigned
  4. Revalidate in PECOS

CMS enrollment records

Enrollment IDTypeSpecialtyStateDue date
I20250626001708IClinical Social WorkerILTBD

What to do next

  • No action required while the due date shows TBD.
  • Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
  • Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 60451)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.
PAC ID: 3971997735View full group profile
NameSpecialtyState
Mental Health CounselorIL
Clinical Social WorkerIL
Clinical Social WorkerIL
Mental Health CounselorIL
Mental Health CounselorIL
Mental Health CounselorIL
Clinical Social WorkerIL
Mental Health CounselorIL
Mental Health CounselorIL
Mental Health CounselorIL

Reviews

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Frequently asked questions

What is the 10-digit NPI for GREGORY OBRIEN?
GREGORY OBRIEN — NPI 1114793627 — is the standard way to identify this listing.
Is GREGORY OBRIEN still practicing?
GREGORY OBRIEN is currently listed as active in the public NPI registry.
What is GREGORY OBRIEN best known for clinically?
Directory data describes GREGORY OBRIEN with Mental Health Counselor. Clinical services aligned with this taxonomy classification.
What address line appears for GREGORY OBRIEN?
GREGORY OBRIEN's geographic hint is New Lenox, Illinois in our summary view.
Is specialty guaranteed by NPI alone?
Taxonomy selections describe intent; scope of practice still follows state law.

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