Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Michael Grassa, MS
Counselor in Woburn, MA · enumerated 2019.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1801445374
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Registry record
Entity type Individual (Type 1)
Name Michael Grassa
Credential MS
Sex Male
Practice address 10 Roessler Rd, Woburn, MA, 01801
Phone (617) 797-4742
Enumeration date Sep 8, 2019
Last updated in NPPES Sep 23, 2020
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 Michael Grassa?
Michael Grassa is registered in NPPES with the primary taxonomy of Counselor. 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 → Alexa Setzen Clinical Social Worker · Woburn, MA NPI 1366890600 Laura Chamberlain Social Worker · Woburn, MA NPI 1649713272 Lauren Costanzo Counselor · Woburn, MA NPI 1598270902 Kirsten Lowell Counselor · Woburn, MA NPI 1184105363 Kelly Saramago Counselor · Woburn, MA NPI 1669945036 Donna Wilbur Social Worker · Woburn, MA NPI 1255963807 Emily Salvaggio Psychiatric/Mental Health Nurse Practitioner · Woburn, MA NPI 1578237558 Harshmeet Kaur Counselor · Woburn, MA NPI 1205580172
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-23.