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MR. THOMAS WILLIAM MERCER DDS
NPI 1659589539
Dentist - General Practice in Rancho Cucamonga, CA

Active since May 21, 2007
9333 BASELINE ROAD, STE #200, RANCHO CUCAMONGA, CA 91730(909) 980-5558(909) 980-3688 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mr. Thomas William Mercer Dds NPPES

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

MR. THOMAS WILLIAM MERCER DDS (NPI 1659589539) is an individual general practice provider in Rancho Cucamonga, California, licensed in California (031954) and active in the NPI registry since May 2007.

NPPES Registry Identity

NPI1659589539
Entity TypeIndividualMale
Primary Taxonomy1223G0001X
Provider Legal NameMR. THOMAS WILLIAM MERCERCredential: DDS
Location Address9333 BASELINE ROAD, STE #200Rancho Cucamonga, CA 91730
Mailing Address9333 Baseline Road, Ste #200Rancho Cucamonga, CA 91730 · (909) 980-5558 · Fax (909) 980-3688
Phone(909) 980-5558
Fax(909) 980-3688
Sole ProprietorNo
Enumeration DateMay 21, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1659589539 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers
Taxonomy Code1223G0001X
License✔ Licensed in CA · 031954
Definition
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.
9333 BASELINE ROAD, Rancho Cucamonga, CA 91730
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and more.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.

MRS. SHIRLEY DAUGHTERS MERCER DDS
Dentist (General Practice)
9333 BASELINE ROAD, STE #200
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 980-5558

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 Thomas Mercer's NPI number?

The NPI number for Thomas Mercer is 1659589539. It was assigned to this individual provider in the NPPES registry on May 21, 2007.

Where is Thomas Mercer located?

Thomas Mercer practices at 9333 Baseline Road Ste #200, Rancho Cucamonga, CA 91730. The listed phone number is (909) 980-5558.

What is Thomas Mercer's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

What insurance does Thomas Mercer accept?

Health plans from Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas, HRI Dental & Vision and Humana and 1 other insurer list Thomas Mercer 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 Thomas Mercer was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.