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

Dr. Thomas Grant Quinlan, PSY.D.

Adult Development & Aging Psychologist in Saint Petersburg, FL · enumerated 2007.

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

National Provider Identifier

1356539837

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Grant Quinlan

Credential PSY.D.

Sex Male

Practice address Saint Petersburg, FL, 33701

Phone (727) 906-6185

Enumeration date Oct 9, 2007

Last updated in NPPES Nov 17, 2023

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

Taxonomy & licenses

103TA0700X Adult Development & Aging Psychologist Behavioral Health & Social Service Providers Primary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PSY7593 (FL) Secondary

103TC2200X Clinical Child & Adolescent Psychologist Behavioral Health & Social Service Providers · License 7593 (FL) Secondary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Thomas Quinlan practice?

The practice location on file with NPPES is in Saint Petersburg, FL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Thomas Quinlan?

The National Provider Identifier (NPI) for Thomas Quinlan is 1356539837, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-17.