MEREDITH LEE AMBROSIEWICZ LMSW
NPI 1215450994
Social Worker - Clinical in Port Huron, MI

Active since July 25, 2017PECOS EnrolledAccepts Medicare Assignment
3111 ELECTRIC AVE, PORT HURON, MI 48060(810) 395-4343 Get Directions Write a Review

NPPES record last updated: June 30, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 30, 2025, Oct 10, 2023, Jul 25, 2017 (3 updates tracked since 2017).

About Meredith Lee Ambrosiewicz Lmsw NPPES

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

MEREDITH LEE AMBROSIEWICZ LMSW (NPI 1215450994) is an individual clinical provider in Port Huron, Michigan, licensed in Michigan (6801119093) and active in the NPI registry since July 2017. She is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (2021).

NPPES Registry Identity

NPI1215450994
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMEREDITH LEE AMBROSIEWICZCredential: LMSW
Location Address3111 ELECTRIC AVEPort Huron, MI 48060-8127
Mailing Address3111 Electric AvePort Huron, MI 48060-8127
Sole ProprietorNo
Medical School CMSWayne State University School Of MedicineGraduated 2021
Enumeration DateJuly 25, 2017
Last NPPES UpdateJune 30, 20253 updates tracked since enumeration
NPPES CertifiedJune 30, 2025
✔ NPI 1215450994 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 · 6801119093
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.
3111 ELECTRIC AVE, Port Huron, MI 48060

Accepted Insurance

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

Meredith Lee Ambrosiewicz Lmsw 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 ID1052828639
PECOS Enrollment IDI20250729001232
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 Meredith Ambrosiewicz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Community/Behavioral Health
3111 ELECTRIC AVE
Port Huron, MI 48060
  • Reassigned Medicare billing, Michigan enrollment
  • 80 clinicians in this Medicare group
Mental Health
66 W FLAGLER ST STE 900
Miami, FL 33130
  • Reassigned Medicare billing, Michigan enrollment
  • 411 clinicians in this Medicare group

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 48060 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.

Other Providers at the Same Location NPPES 20

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

Registered Nurse
3111 ELECTRIC AVE
PORT HURON, MI 48060
Social Worker (Clinical)
3111 ELECTRIC AVE
PORT HURON, MI 48060
Peer Specialist
3111 ELECTRIC AVE
PORT HURON, MI 48060
Social Worker (Clinical)
3111 ELECTRIC AVE
PORT HURON, MI 48060
Technician/Technologist
3111 ELECTRIC AVE
PORT HURON, MI 48060
Case Manager/Care Coordinator
3111 ELECTRIC AVE
PORT HURON, MI 48060
Social Worker (Clinical)
3111 ELECTRIC AVE
PORT HURON, MI 48060
Peer Specialist
3111 ELECTRIC AVE
PORT HURON, MI 48060

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 Meredith Ambrosiewicz's NPI number?

The NPI number for Meredith Ambrosiewicz is 1215450994. It was assigned to this individual provider in the NPPES registry on July 25, 2017.

Where is Meredith Ambrosiewicz located?

Meredith Ambrosiewicz practices at 3111 Electric Ave, Port Huron, MI 48060. The listed phone number is (810) 395-4343.

What is Meredith Ambrosiewicz's specialty?

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

Is Meredith Ambrosiewicz enrolled in Medicare?

Yes. Meredith Ambrosiewicz 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 Meredith Ambrosiewicz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Meredith Ambrosiewicz reassigns Medicare benefits to 2 organizations: St Clair County Community Mental Health Authority (Port Huron, MI) and Grow Healthcare Group PA (Miami, FL). 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 Meredith Ambrosiewicz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Meredith Ambrosiewicz accept?

Health plans from Blue Care Network of Michigan, Oscar Insurance Company and Priority Health list Meredith Ambrosiewicz 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 Meredith Ambrosiewicz was last updated on June 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.