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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mari Miyamoto Hayashi, PHD/CCC-SLP

Otolaryngology/Facial Plastic Surgery Physician in Mechanicsville, VA · enumerated 2017 · practices at Tucker Cardiology Associates PC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1689115768

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Registry record

Entity type Individual (Type 1)
Name Mari Miyamoto Hayashi
Credential PHD/CCC-SLP
Sex Female
Practice address Mechanicsville, VA, 23116
Phone (804) 569-6240
Fax (804) 569-6244
Enumeration date Mar 9, 2017
Last updated in NPPES Mar 9, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207YX0905X Otolaryngology/Facial Plastic Surgery Physician Allopathic & Osteopathic Physicians · License 101048206 (VA) Primary
235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 2202001577 (VA) Secondary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

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Frequently asked questions

What is the NPI number for Mari Hayashi?
The National Provider Identifier (NPI) for Mari Hayashi is 1689115768, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mari Hayashi practice?
The practice location on file with NPPES is in Mechanicsville, VA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-09.