Quick answers
- Where does Andrew Hamlyn see patients?
- Medicare's clinician data lists 2 practice locations, including Libertyville, IL. Call before your visit to confirm the address.
- What is Andrew Hamlyn's specialty?
- Medicare lists Mental Health Counselor as the primary specialty.
- Does Andrew Hamlyn accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew Hamlyn accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Andrew Hamlyn?
- (847) 549-1189, as listed in official Medicare / NPI Registry data.
- What is Andrew Hamlyn's NPI number?
- 1184376659. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Andrew Hamlyn is enrolled with Medicare (CMS data updated 2026-10-02).
- 1800 Hollister Dr, Suite 201Libertyville, IL 60048 (847) 549‑1189
- 604 Academy DrLibertyville, IL 60048 (847) 579‑1189
Group practices
Medicare enrollment lists Andrew Hamlyn as a member of this group (CMS data updated 2026-10-02).
- Grand Oaks Behavioral Health LLC14 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Libertyville
Clinicians with the same Medicare primary specialty in Libertyville, IL — not a recommendation.
Clinician information
| Graduation year | 2017 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184376659 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians