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JASON MICHAEL GILLIAM LMSW
NPI 1083947832
Social Worker - Clinical in Dewitt, MI

Active since September 11, 2009PECOS Enrolled
12990 ONTONAGON DR, DEWITT, MI 48820(517) 202-3022 Get Directions Write a Review

NPPES record last updated: November 6, 2018. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 6, 2018, Aug 16, 2016 (2 updates tracked since 2016).

About Jason Michael Gilliam Lmsw NPPES

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

JASON MICHAEL GILLIAM LMSW (NPI 1083947832) is an individual clinical provider in Dewitt, Michigan, licensed in Michigan (6801096929) and active in the NPI registry since September 2009. He is enrolled in Medicare PECOS and maintains a secondary practice location in Lansing.

NPPES Registry Identity

NPI1083947832
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameJASON MICHAEL GILLIAMCredential: LMSW
Location Address12990 ONTONAGON DRDewitt, MI 48820-8658
Mailing Address12990 Ontonagon DrDewitt, MI 48820-8658 · (517) 202-3022
Phone(517) 202-3022
Sole ProprietorNo
Enumeration DateSeptember 11, 2009
Last NPPES UpdateNovember 6, 20182 updates tracked since enumeration
✔ NPI 1083947832 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in MI · 6801096929
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
12990 ONTONAGON DR, Dewitt, MI 48820
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Secondary Practice Location 1

Location 1812 E Jolly Rd Ste 311Lansing, MI 48910-6825 · Phone (517) 346-8318 · Fax (517) 346-8420

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, Priority Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jason Michael Gilliam Lmsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Jason Gilliam reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Community Mental Health Authority Clinton Eaton Ingham Counties
10 mi
Mental Health (Including Community Mental Health Center)
812 E JOLLY ROAD
Lansing, MI 48910
  • Reassigned Medicare billing, Michigan enrollment
  • Medicare enrollment name: Community Mental Health Authority Of Clinton Eaton Ingham Counties
  • 232 clinicians in this Medicare group
NPI 1265483457 (517) 346-8200

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48820 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $54.34 – $166.68
Typical copayment $0.00 (range $13.58 – $41.67)
Most-billed visit code NA
Established Patient
$68.07 typical visit price
range $17.09 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Jason Gilliam's NPI number?

The NPI number for Jason Gilliam is 1083947832. It was assigned to this individual provider in the NPPES registry on September 11, 2009.

Where is Jason Gilliam located?

Jason Gilliam practices at 12990 Ontonagon Dr, Dewitt, MI 48820. The listed phone number is (517) 202-3022.

What is Jason Gilliam's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Jason Gilliam enrolled in Medicare?

Yes. Jason Gilliam is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jason Gilliam's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jason Gilliam reassigns Medicare benefits to Community Mental Health Authority Clinton Eaton Ingham Counties (Lansing, MI). 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 Jason Gilliam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jason Gilliam accept?

Health plans from Oscar Insurance Company and Priority Health list Jason Gilliam 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 Jason Gilliam was last updated on November 6, 2018. 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.