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ANDREW HAMLYN LCPC
NPI 1184376659
Counselor - Mental Health in Libertyville, IL

Active since January 25, 2022PECOS EnrolledAccepts Medicare Assignment
1800 HOLLISTER DR STE 201, LIBERTYVILLE, IL 60048(847) 549-1189 Get Directions Write a Review

NPPES record last updated: June 16, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 9, 2026, Jan 25, 2022 (2 updates tracked since 2022).

About Andrew Hamlyn Lcpc NPPES

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

ANDREW HAMLYN LCPC (NPI 1184376659) is an individual mental health provider in Libertyville, Illinois, licensed in Illinois (180017087) and active in the NPI registry since January 2022. He is enrolled in Medicare PECOS, maintains a secondary practice location in Libertyville, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1184376659
Entity TypeIndividualMale
Primary Taxonomy101YM0800X
Provider Legal NameANDREW HAMLYNCredential: LCPC
Location Address1800 HOLLISTER DR STE 201Libertyville, IL 60048-5266
Mailing Address1800 Hollister Dr Ste 201Libertyville, IL 60048-5266 · (847) 549-1189
Phone(847) 549-1189
Sole ProprietorNo
Medical School CMSOtherGraduated 2017
Enumeration DateJanuary 25, 2022
Last NPPES UpdateJune 16, 20262 updates tracked since enumeration
NPPES CertifiedJune 16, 2026
✔ NPI 1184376659 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 IL · 180017087
1800 HOLLISTER DR STE 201, Libertyville, IL 60048
Open in Google Maps ↗

Secondary Practice Location 1

Location 1604 Academy DriveLibertyville, IL 60048 · Phone (847) 549-1189

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, UnitedHealthcare.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

Andrew Hamlyn Lcpc 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 ID1850866484
PECOS Enrollment IDI20260410001427
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 Andrew Hamlyn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Grand Oaks Behavioral Health LLC
Same address
Clinical
1800 HOLLISTER DR, SUITE 201
Libertyville, IL 60048
  • Reassigned Medicare billing, Illinois enrollment
  • 16 clinicians in this Medicare group
NPI 1124242359 (847) 549-1189

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 15

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

NICOLE MEDINA LSW
Social Worker
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 549-1189
BAILEY LYNN LAMBERT-CANDAZA LCSW
Social Worker (Clinical)
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 549-1189
IZABELLA SISARICA LCPC
Counselor (Professional)
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 549-1189
DR. BENJAMIN MICHAELS PSYD
Psychologist (Clinical)
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 549-1189
LESLIE HERRERA LSW
Social Worker
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 549-1189
ERIN DANAHY LCSW
Social Worker (Clinical)
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 404-9366
OLGA PRUTNIKOV MSW, LCSW
Social Worker (Clinical)
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 549-1189
STACY ANNE KOCH LCSW
Social Worker (Clinical)
1800 HOLLISTER DR STE 201
LIBERTYVILLE, IL 60048
Lake County (847) 549-1189

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 Andrew Hamlyn's NPI number?

The NPI number for Andrew Hamlyn is 1184376659. It was assigned to this individual provider in the NPPES registry on January 25, 2022.

Where is Andrew Hamlyn located?

Andrew Hamlyn practices at 1800 Hollister Dr Ste 201, Libertyville, IL 60048. The listed phone number is (847) 549-1189.

What is Andrew Hamlyn's specialty?

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

Is Andrew Hamlyn enrolled in Medicare?

Yes. Andrew Hamlyn 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 organization bills Medicare for Andrew Hamlyn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Hamlyn reassigns Medicare benefits to Grand Oaks Behavioral Health LLC (Libertyville, IL). 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 Andrew Hamlyn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Andrew Hamlyn accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and UnitedHealthcare list Andrew Hamlyn 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 Andrew Hamlyn was last updated on June 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.