Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Michelle P Hay, LIC.AC.
Acupuncturist in Waltham, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1477675627
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Registry record
Entity type Individual (Type 1)
Name Ms. Michelle P Hay
Credential LIC.AC.
Sex Female
Practice address 32 South St, Suite 301 A, Waltham, MA, 02453
Phone (617) 501-2588
Enumeration date Apr 6, 2007
Last updated in NPPES Jul 8, 2007
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
Where does Michelle Hay practice?
The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michelle Hay?
The National Provider Identifier (NPI) for Michelle Hay is 1477675627, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.