Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lionel Grassi
Peer Specialist in Concord, NH · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1376010686
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Registry record
Entity type Individual (Type 1)
Name Lionel Grassi
Sex Male
Practice address 3 N State St, Concord, NH, 03301
Phone (603) 226-7650
Enumeration date Oct 25, 2018
Last updated in NPPES Oct 25, 2018
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
What specialty is Lionel Grassi?
Lionel Grassi is registered in NPPES with the primary taxonomy of Peer Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → Rebecca Ewing Addiction Medicine (Psychiatry & Neurology) Physician · Concord, NH NPI 1003854993 Cassie Yackley Clinical Psychologist · Concord, NH NPI 1083717920 Bret Longgood Clinical Social Worker · Concord, NH NPI 1427156744 Susan Summerson Mental Health Counselor · Concord, NH NPI 1043307606 Jennifer Yebba Addiction (Substance Use Disorder) Counselor · Concord, NH NPI 1134404833 Benedict Boover Case Manager/Care Coordinator · Concord, NH NPI 1801201959 Christine O'Brien Clinical Social Worker · Concord, NH NPI 1902208952 Reid Poosikian Peer Specialist · Concord, NH NPI 1740769835
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-25.