Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Boris Stein, D.M.D.
Periodontics in Brookline, MA · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1053666917
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Dr. Boris Stein
Credential D.M.D.
Sex Male
Practice address 1443 Beacon Street, Brookline, MA, 02446
Phone (617) 232-8222
Enumeration date Jul 17, 2012
Last updated in NPPES Jul 1, 2015
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Boris Stein?
Boris Stein is registered in NPPES with the primary taxonomy of Periodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-01.