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

Dr. Carolyn Louise O'Brien, PH.D.

Clinical Psychologist in Mobile, AL · enumerated 2006.

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

National Provider Identifier

1720001712

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolyn Louise O'Brien

Credential PH.D.

Sex Female

Practice address Mobile, AL, 36608

Phone (251) 343-2597

Fax (251) 342-0122

Enumeration date Jul 25, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 1338 (AL) Primary

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
11683296	Other	AL	CAQH
248726	Other	AL	COMPSYCH
51538609	Other	AL	AMERICAN BEHAVIORAL -ABBM
515-28620	Other	AL	BCBS
OBRIE0002	Other	AL	DDS

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 Carolyn O'Brien's NPI record?

Cross-check NPI 1720001712 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1720001712 active?

Yes, as of the latest NPPES snapshot, NPI 1720001712 is active (record last updated 2007-07-08).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.