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

Dr. Mark A. Phillips, PH.D.

Clinical Neuropsychologist in Nashville, TN · enumerated 2007.

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

National Provider Identifier

1538215736

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark A. Phillips

Credential PH.D.

Sex Male

Practice address Nashville, TN, 37221

Phone (615) 646-1141

Fax (615) 646-1149

Enumeration date Jan 28, 2007

Last updated in NPPES Jan 6, 2015

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

Taxonomy & licenses

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License P1513 (TN) Primary

103T00000X Psychologist Behavioral Health & Social Service Providers · License P1513 (TN) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License P1513 (TN) 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
3686357	Medicaid	TN	-

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

How do I verify Mark Phillips's NPI record?

Cross-check NPI 1538215736 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1538215736 active?

Yes, as of the latest NPPES snapshot, NPI 1538215736 is active (record last updated 2015-01-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-06.