Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CHARLES P MAYER-TWOMEY LCSW
NPI 1932262276
Social Worker - Clinical in Arvada, CO

Active since December 18, 2006
8665 W 78TH PL, ARVADA, CO 80005(510) 689-3725 Get Directions Write a Review

NPPES record last updated: June 29, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Charles P Mayer-twomey Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHARLES P MAYER-TWOMEY LCSW (NPI 1932262276) is an individual clinical provider in Arvada, Colorado, licensed in Colorado (09924139) and active in the NPI registry since December 2006.

NPPES Registry Identity

NPI1932262276
Entity TypeIndividualMale
Primary Taxonomy1041C0700X
Provider Legal NameCHARLES P MAYER-TWOMEYCredential: LCSW
Location Address8665 W 78TH PLArvada, CO 80005-4313
Mailing Address8665 W 78th PlArvada, CO 80005-4313 · (510) 689-3725
Sole ProprietorYes
Enumeration DateDecember 18, 2006
Last NPPES UpdateJune 29, 2026
NPPES CertifiedJune 29, 2026
NPI 1932262276 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses Licensed in CO · 09924139 Licensed in CA · 29373
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X
Also ListedSocial WorkerTaxonomy 104100000X · License 28453 (CA)
8665 W 78TH PL, Arvada, CO 80005

Other Names 1

Other Name (5)Charlie Mayer

Accepted Insurance

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Social Worker (Clinical)
8665 W 78TH PL
ARVADA, CO 80005

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Charles Mayer-twomey's NPI number?

The NPI number for Charles Mayer-twomey is 1932262276. It was assigned to this individual provider in the NPPES registry on December 18, 2006. The provider is also known as Charlie Mayer.

Where is Charles Mayer-twomey located?

Charles Mayer-twomey practices at 8665 W 78th Pl, Arvada, CO 80005. The listed phone number is (510) 689-3725.

What is Charles Mayer-twomey's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

What insurance does Charles Mayer-twomey accept?

Health plans from Providence Health Plan list Charles Mayer-twomey as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Charles Mayer-twomey was last updated on June 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.