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GEMINI DIAGNOSTICS INC
NPI 1104127174
Clinical Medical Laboratory in Westlake Village, CA

Active since November 08, 2010CLIA 05D2021720 · Accreditation
756 LAKEFIELD RD, SUITE C, WESTLAKE VILLAGE, CA 91361(805) 496-3838(805) 496-7418 Get Directions Write a Review

NPPES record last updated: June 3, 2015. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Gemini Diagnostics Inc NPPES

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

GEMINI DIAGNOSTICS INC (NPI 1104127174) is a healthcare organization registered as a clinical medical laboratory in Westlake Village, California and active in the NPI registry since November 2010. The organization holds an CLIA Accreditation certificate valid through January 24, 2028 and lists Joel Chan, President, as its authorized official.

NPPES Registry Identity

NPI1104127174
Entity TypeOrganization
Primary Taxonomy291U00000X
Legal Business NameGEMINI DIAGNOSTICS INC
Location Address756 LAKEFIELD RD, SUITE CWestlake Village, CA 91361
Mailing Address756 Lakefield Rd, Suite CWestlake Village, CA 91361-2624 · (805) 496-3838 · Fax (805) 496-7418
Phone(805) 496-3838
Fax(805) 496-7418
Organization SubpartNo
Authorized OfficialJoel ChanPresident · (805) 496-3838
Enumeration DateNovember 8, 2010
Last NPPES UpdateJune 3, 2015
✔ NPI 1104127174 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical Medical LaboratoryLaboratories
Taxonomy Code291U00000X
Definition
(1) A clinical laboratory is a facility for the biological, microbiological, serological, chemical, immunohematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, human beings. These examinations also include procedures to determine, measure, or otherwise describe the presence or absence of various substances or organisms in the body. Facilities only collecting or preparing specimens (or both) or only serving as a mailing service and not performing testing are not considered clinical laboratories. (2) Any facility that examines materials from the human body for purposes of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of, the health of human beings. Typical divisions of a clinical laboratory include hematology, cytology, bacteriology, histology, biochemistry, medical toxicology, and serology.
756 LAKEFIELD RD, Westlake Village, CA 91361
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Medicare Participation & PECOS CMS

Medicare enrollment and revalidation status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gemini Diagnostics Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateCaliforniaEnrollment IDO20111128000070Non-DME Part B · Independent Clinical LaboratoryDue dateDecember 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Accreditation 05D2021720

Gemini Diagnostics · Westlake Village, CA
Active · expires Jan 24, 2028
CLIA Number05D2021720
Laboratory TypeIndependent
Certificate Effective DateJanuary 25, 2026
Certificate Expiration DateJanuary 24, 2028
Laboratory DirectorDr. Joel Chan
Laboratory Phone(805) 496-3838
Laboratory LocationGemini Diagnostics756 Lakefield Rd Ste C, Westlake Village, CA 91361
CLIA data matches this NPI record on: Address Name Phone
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
287 services49 patients
Flow cytometry technique for dna or cell analysis, 16 or more markers 88189
Flow cytometry is a method used to measure and analyze cells. It uses a beam of light to detect up to 16 or more markers on cells, helping to identify their type, function, or abnormalities. This technique aids in diagnosing various health conditions.
240 services216 patients
Microscopic genetic analysis of tumor, manual 88360
Microscopic genetic analysis of a tumor involves examining your tumor's genes under a microscope. This helps identify specific genetic changes in the tumor cells. This information can aid in diagnosing, predicting disease progression, and determining the most effective treatment options.
74 services49 patients
Surgical pathology consultation and report on referred material requiring preparation of slides 88323
A surgical pathology consultation involves the examination of tissue removed during surgery. The tissue is processed and slides are prepared for detailed study under a microscope. The findings are then compiled into a report to help guide your treatment plan.
66 services62 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
56 services52 patients
Flow cytometry technique for dna or cell analysis, 9 to 15 markers 88188
Flow cytometry is a technique used to measure physical and chemical characteristics of cells or particles. It can analyze multiple markers (9 to 15) on a cell, helping to identify its type and function. This process can also examine DNA within cells for any abnormalities.
15 services14 patients

Other Providers at the Same Location NPPES

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

JOEL ANTEOL CHAN MD
Pathology (Anatomic Pathology & Clinical Pathology)
756 LAKEFIELD RD, SUITE C
WESTLAKE VILLAGE, CA 91361
Los Angeles County (805) 496-3838

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 Gemini Diagnostics Inc's NPI number?

The NPI number for Gemini Diagnostics Inc is 1104127174. It was assigned to this organization in the NPPES registry on November 8, 2010.

Where is Gemini Diagnostics Inc located?

Gemini Diagnostics Inc is located at 756 Lakefield Rd Suite C, Westlake Village, CA 91361. The listed phone number is (805) 496-3838.

What is Gemini Diagnostics Inc's specialty?

The primary specialty registered for this NPI is Clinical Medical Laboratory with taxonomy code 291U00000X.

Is Gemini Diagnostics Inc enrolled in Medicare?

Yes. Gemini Diagnostics Inc is registered in the Medicare PECOS enrollment system.

When is Gemini Diagnostics Inc's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Independent Clinical Laboratory) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

Does Gemini Diagnostics Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 05D2021720) is associated with this NPI, valid through January 24, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Gemini Diagnostics Inc was last updated on June 3, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.