Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory J Howarth, PA
Physician Assistant in Boston, MA · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508114018
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Registry record
Entity type Individual (Type 1)
Name Gregory J Howarth
Credential PA
Sex Male
Practice address 1 Boston Medical Ctr Pl Fl Place1, Boston, MA, 02118
Phone (617) 414-5481
Enumeration date Aug 15, 2012
Last updated in NPPES Dec 7, 2022
Taxonomy & licenses
363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA4465 (MA) Secondary
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA4465 (MA) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA 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
What is the NPI number for Gregory Howarth?
The National Provider Identifier (NPI) for Gregory Howarth is 1508114018, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Howarth practice?
The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-07.