Carol A Plummer, PHD, LCSW

Carol A Plummer is a Clinical Social Worker provider (Social Worker) practicing in Hilo, HI, registered in the NPPES registry with NPI 1710366554 since 2015. The credential PHD stands for Doctor of Philosophy.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1710366554
Entity type	Individual (Type 1)
Name	Carol A Plummer
Credential	PHD, LCSW
Sex	Female
Practice address	Hilo, HI, 96720
Phone	2258037702
Enumeration date	2015-05-26
Last updated in NPPES	2015-05-26

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1041C0700X	Clinical Social Worker	Primary	3889	HI

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

Copy-ready billing details

Provider: Carol Plummer, PHD, LCSW
NPI: 1710366554
Taxonomy: 1041C0700X (Clinical Social Worker)
Address: Hilo, HI, 96720

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1457949240	Johnalyn Rodrigues Nosaka	Individual	School Clinical Nurse Specialist	Hilo, HI
1760364186	Russell Hamilton	Individual	Mental Health Counselor	Hilo, HI

Verify this record

Cross-check NPI 1710366554 against the authoritative CMS record: view Carol A Plummer on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Carol Plummer?

Carol Plummer is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2015-05-26.