Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Thomas E. Sullivan, PH.D.
Psychologist in Fairfield, OH · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1316912421
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Registry record
Entity type Individual (Type 1)
Name Dr. Thomas E. Sullivan
Credential PH.D.
Sex Male
Practice address 2810 Mack Rd, Fairfield, OH, 45014
Phone (513) 874-4530
Fax (513) 346-3811
Enumeration date Feb 22, 2006
Last updated in NPPES Jul 13, 2026
Taxonomy & licenses
103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 5083 (OH) 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 |
|---|---|---|---|
| 257968 | Other | OH | VALUE OPTIONS PROVIDER ID |
| 000000066833 | Other | OH | ANTHEM ID# |
| A294802 | Other | OH | VALUE OPTIONS VIN |
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
Is NPI 1316912421 active?
Yes, as of the latest NPPES snapshot, NPI 1316912421 is active (record last updated 2026-07-13).
How do I verify Thomas Sullivan's NPI record?
Cross-check NPI 1316912421 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Joeanne Gutzwiller Psychologist · Fairfield, OH NPI 1801861372 Linda Hartmann Clinical Psychologist · Fairfield, OH NPI 1619942638 Robyn Coleman School Psychologist · Fairfield, OH NPI 1114378890 Rachel M Sparn LLC Adult Mental Health Clinic/Center · Fairfield, OH NPI 1558805713 C Crystal Psych Psychologist · Fairfield, OH NPI 1750818225
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-13.