Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John A Bierly, D.M.D.
Periodontics in Simsbury, CT · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275626889
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Registry record
Entity type Individual (Type 1)
Name Dr. John A Bierly
Credential D.M.D.
Sex Male
Practice address 625 Hopmeadow St, Simsbury, CT, 06070
Phone (860) 658-5552
Fax (860) 651-8569
Enumeration date Oct 2, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD credential
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 1275626889 active?
Yes, as of the latest NPPES snapshot, NPI 1275626889 is active (record last updated 2007-07-08).
How do I verify John Bierly's NPI record?
Cross-check NPI 1275626889 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 → Philip E. Pilon, Dmd, Lawrence S. Christian, Dmd, PC General Practice Dentistry · Simsbury, CT NPI 1497758817 Peter Peterson Periodontics · Simsbury, CT NPI 1508959099 Lawrence Christian General Practice Dentistry · Simsbury, CT NPI 1922136886 Center for Dental Excellence LLC Prosthodontics · Simsbury, CT NPI 1629106349 Bruce Nghiem Prosthodontics · Simsbury, CT NPI 1457470270 Alyssa Maurin General Practice Dentistry · Simsbury, CT NPI 1881436392
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.