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

Dr. Michael Ernest Hayes, PHD, MSW

Clinical Social Worker in Key West, FL · enumerated 2007.

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

National Provider Identifier

1598817942

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Ernest Hayes

Credential PHD, MSW

Sex Male

Practice address Key West, FL, 33040

Phone (305) 293-4806

Fax (305) 296-6337

Enumeration date Jan 17, 2007

Last updated in NPPES Aug 8, 2014

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW 000 2029 (CT) Primary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 8797 (FL) Secondary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
140002029	Other	CT	BLUE CROSS
0800097	Other	FL	MHN
P584479	Other	CT	OXFORD

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Michael Hayes?

The National Provider Identifier (NPI) for Michael Hayes is 1598817942, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Hayes practice?

The practice location on file with NPPES is in Key West, FL. 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 2014-08-08.