Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Leslie John Mester, MA-CCC/A
Audiologist in Westlake, OH · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1013155811
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Registry record
Entity type Individual (Type 1)
Name Mr. Leslie John Mester
Credential MA-CCC/A
Sex Male
Practice address 29099 Health Campus Dr, Suite 250, Westlake, OH, 44145
Phone (440) 835-6245
Fax (440) 892-6639
Enumeration date Feb 2, 2009
Last updated in NPPES Feb 2, 2009
Taxonomy & licenses
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1013155811 active?
Yes, as of the latest NPPES snapshot, NPI 1013155811 is active (record last updated 2009-02-02).
How do I verify Leslie Mester's NPI record?
Cross-check NPI 1013155811 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Donna Gron Nurse Practitioner · Westlake, OH NPI 1891796728 Amelia Llerena Internal Medicine Physician · Westlake, OH NPI 1689660714 David Koris Podiatrist · Westlake, OH NPI 1073595963 Ikram Syed Specialist · Westlake, OH NPI 1538132485 Steven Pearse Surgery Physician · Westlake, OH NPI 1144296856 Westside Medicine & Cardiology Inc Cardiovascular Disease Physician · Westlake, OH NPI 1104887959 James Kasick Dermatology Physician · Westlake, OH NPI 1326086182 Aravind Dipali Pediatrics Physician · Westlake, OH NPI 1356367833
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-02.