GENEDX LLC
NPI 1487632998
Clinical Medical Laboratory in Gaithersburg, MD

Q: What is Genedx LLC's NPI number?

The NPI number for Genedx LLC is 1487632998. It was assigned to this organization in the NPPES registry on January 4, 2006. The provider was formerly known as GeneDx, Inc..

Q: What is Genedx LLC's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Genedx LLC was last updated on January 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.

Active since January 04, 2006CLIA 21D0969951 · Accreditation

205 & 207 PERRY PKWY, GAITHERSBURG, MD 20877(301) 519-2100(201) 421-2010 Get Directions Write a Review

NPPES record last updated: January 27, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 27, 2026, Mar 21, 2025, Jul 6, 2023 and 4 more (7 updates tracked since 2016).

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About Genedx Llc NPPES

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

GENEDX LLC (NPI 1487632998), doing business as Genedx, Inc., is a healthcare organization registered as a clinical medical laboratory in Gaithersburg, Maryland and active in the NPI registry since January 2006. The organization holds an CLIA Accreditation certificate valid through December 9, 2026 and lists Christine Ann Mcgrogan, Payor Credentialing Specialist, as its authorized official.

NPPES Registry Identity

NPI1487632998

Entity TypeOrganization

Primary Taxonomy291U00000X

Legal Business NameGENEDX LLC

Location Address205 & 207 PERRY PKWYGaithersburg, MD 20877-2142

Mailing AddressPo Box 21997New York, NY 10087-0001 · (888) 729-1206 · Fax (201) 421-2010

Phone(301) 519-2100

Fax(201) 421-2010

Organization SubpartNo

Authorized OfficialChristine Ann McgroganPayor Credentialing Specialist · (240) 658-0686

Enumeration DateJanuary 4, 2006

Last NPPES UpdateJanuary 27, 20267 updates tracked since enumeration

NPPES CertifiedJanuary 27, 2026

✔ NPI 1487632998 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinical Medical LaboratoryLaboratories

Taxonomy Code291U00000X

License✔ Licensed in MD · 953

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.

Also ListedMedical Genetics, Ph.D. Medical GeneticsTaxonomy 170100000X · License 870020

205 & 207 PERRY PKWY, Gaithersburg, MD 20877

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Other Names 1

Former Legal Business NameGenedx, Inc.

Other Identifiers 2

Other21D0969951Cms Clia Certification

Other953MD · Maryland State License

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Alabama, Blue Cross and Blue Shield of Kansas, Inc., Blue Cross and Blue Shield of Nebraska and more.Insurance ›

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 21D0969951

Genedx, LLC · Gaithersburg, MD

Active · expires Dec 9, 2026

CLIA Number21D0969951

Laboratory TypeIndependent

Certificate Effective DateDecember 10, 2024

Certificate Expiration DateDecember 9, 2026

Laboratory DirectorDr. Kathleen S. Hruska

Laboratory Phone(301) 519-2100

Laboratory LocationGenedx, LLC205 & 207 Perry Parkway, Gaithersburg, MD 20877

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 37

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.

Gene analysis (breast and related cancers), duplication or deletion variants 81433

Gene analysis for breast and related cancers involves studying your DNA to identify any alterations or changes. These changes, known as duplication or deletion variants, can potentially increase the risk of developing certain types of cancers. This information can help in planning preventive measures and treatments.

989 services989 patients

Test for detecting genes associated with inherited breast cancer-related disorders 81432

This test identifies if you carry certain genes linked to inherited disorders related to breast health. It's done through a simple blood or saliva sample. Results can help determine your risk and guide future health decisions.

987 services987 patients

Test for detecting genes associated with disease, genomic sequence, must include sequence analysis of entire mitochondrial genome 81460

This test detects specific genes linked to diseases by analyzing the entire mitochondrial genome. It's like scanning a book for certain words. The procedure involves mapping the genomic sequence, which is the order of genes in your DNA, to identify potential health risks.

433 services433 patients

Test for detecting genes associated with disease, whole mitochondrial genome 81465

A test for the whole mitochondrial genome identifies changes in the mitochondrial DNA that may cause health issues. It involves taking a small sample of blood or tissue. The DNA is then examined for any changes linked to potential diseases.

432 services432 patients

Gene analysis panel for hereditary disorders of the peripheral nervous system 81448

A gene analysis panel for hereditary disorders of the peripheral nervous system is a test that checks for genetic mutations linked to certain nerve disorders. It helps identify if you have a higher risk of developing these conditions.

239 services239 patients

Test for detecting genes associated with colon cancer, genomic sequence analysis panel, at least 10 genes 81435

This is a genetic test that checks for specific genes linked to colon cancer. The test analyzes a minimum of 10 genes to identify any changes or mutations that may increase the risk of developing this type of cancer.

197 services197 patients

Test for detecting genes associated with colon cancer, duplication/deletion analysis panel, at least 5 genes 81436

This test identifies changes in at least 5 genes linked to colon cancer. It uses a technique called duplication/deletion analysis panel, which can detect if there are extra copies or missing parts in these genes. Such changes can increase the risk of developing colon cancer.

197 services197 patients

Genome-wide microarray analysis for copy number and single nucleotide polymorphism (snp) variants 81229

Genome-wide microarray analysis is a test that scans your DNA to detect variations. These can be larger changes, called copy number variants, or smaller ones, known as single nucleotide polymorphisms. This information helps understand your genetic makeup and potential health risks.

169 services169 patients

Gene analysis (muts homolog 2, colon cancer, nonpolyposis type 1) full sequence analysis 81295

Gene analysis (MUTYH) full sequence analysis is a test that examines your DNA to identify any changes linked to nonpolyposis colon cancer type 1. This can help determine your risk of developing this type of cancer.

138 services138 patients

Gene analysis (muts homolog 6 [e coli]) full sequence analysis 81298

Gene analysis, specifically MUTS Homolog 6 (E. coli) full sequence analysis, is a test that examines your DNA to identify changes in the MUTS Homolog 6 gene. This information helps doctors understand and manage potential health concerns.

137 services137 patients

Gene analysis (calcium voltage-gated channel subunit alpha1 a) of full sequence 81185

Gene analysis of the calcium voltage-gated channel subunit alpha1 a involves examining your DNA to understand how your body regulates calcium. This helps identify potential health risks related to calcium imbalances. It's a non-invasive procedure involving a simple blood or saliva sample.

131 services131 patients

Test for detecting genes 81440

A gene detection test is a medical procedure that identifies specific genes in your DNA. It helps to understand your genetic makeup and potential health risks. The process involves taking a small sample of your body tissue, like blood or saliva, which is then analyzed in a lab.

119 services119 patients

Gene analysis (ataxin 2) for abnormal alleles 81179

Gene analysis for ataxin 2 checks for alterations in the ATXN2 gene. This gene is responsible for producing a protein essential for normal cell functions. If abnormal, it may lead to certain neurological disorders. The test involves analyzing your DNA, typically obtained via a blood sample.

112 services112 patients

Gene analysis (dm1 protein kinase) for abnormal alleles 81234

Gene analysis for DM1 protein kinase checks for abnormal alleles or variations in your DNA. This test helps identify changes linked to certain genetic conditions. It's a non-invasive procedure, involving a simple blood draw.

110 services110 patients

Gene analysis (ataxin 3) for abnormal alleles 81180

Gene analysis for ataxin 3 helps identify abnormal alleles, or variations, in the ataxin 3 gene. This gene plays a role in neurological function. If abnormal, it may indicate conditions like Machado-Joseph disease. The process involves analyzing a blood sample.

108 services108 patients

Gene analysis (ataxin 8 opposite strand [non-protein coding]) for abnormal alleles 81182

Gene analysis for ataxin 8 opposite strand checks for unusual gene variants. This test helps identify genetic conditions that could affect your health. It involves analyzing your DNA, usually from a blood sample, to find these abnormal alleles.

108 services108 patients

Gene analysis (ataxin 1) for abnormal alleles 81178

Gene analysis of ataxin 1 involves studying your DNA to identify any abnormal versions of the ataxin 1 gene. This gene is associated with certain neurological disorders. The test helps in early detection and management of these conditions.

106 services106 patients

Gene analysis (ataxin 7) for abnormal alleles 81181

Gene analysis for ataxin 7 involves studying your DNA to identify any unusual changes in the ataxin 7 gene. These changes, known as abnormal alleles, can cause health conditions like spinocerebellar ataxia. The test helps in early detection and management.

106 services106 patients

Gene analysis (calcium voltage-gated channel subunit alpha1 a) for abnormal alleles 81184

Gene analysis for calcium voltage-gated channel subunit alpha1 a involves studying your genetic material to identify any abnormal alleles. These abnormal alleles could potentially cause health issues. This process is non-invasive and helps in personalized medical care planning.

103 services103 patients

Gene analysis (cch-type zinc finger nucleic acid binding protein) for abnormal alleles 81187

Gene analysis for CCH-type zinc finger nucleic acid binding protein checks for abnormal alleles. This process involves studying your DNA to identify any unusual genetic variations. These variations could potentially lead to health issues. It's a proactive step in understanding your body's genetic makeup.

101 services101 patients

Gene analysis (postmeiotic segregation increased 2 [s cerevisiae]) full sequence analysis 81317

Gene analysis, specifically postmeiotic segregation increased 2 (s cerevisiae) full sequence analysis, is a scientific procedure. It involves studying your entire genetic code to identify any changes or differences that could be related to certain health conditions. This is done in a lab, using a sample provided by you.

84 services84 patients

Gene analysis (breast cancer 1 and 2) of full sequence and analysis for duplication or deletion variants 81162

Gene analysis for breast cancer 1 and 2 involves studying your DNA to detect alterations that may increase your risk of developing certain health issues. This test analyzes the full sequence and checks for duplication or deletion variants.

71 services71 patients

Gene analysis (fragile x syndrome, x-linked intellectual disability) for detection of abnormal alleles 81243

Gene analysis for Fragile X Mental Retardation involves studying your DNA to identify any abnormal changes or 'alleles'. This helps in detecting the presence of Fragile X syndrome, a genetic condition that can cause learning and behavioral challenges.

62 services62 patients

Gene analysis (poly[a] binding protein nuclear 1) for abnormal alleles 81312

Gene analysis for Poly(A) Binding Protein Nuclear 1 (PABPN1) checks for abnormal alleles or variations in your DNA. This test can help identify genetic disorders caused by these variations. It's a non-invasive procedure, involving a simple blood or saliva sample.

49 services49 patients

Gene analysis (ccaat/enhancer binding protein [c/ebp], alpha) full gene sequence 81218

Gene analysis of the CCAAT/Enhancer Binding Protein (C/EBP), Alpha, involves studying the entire sequence of this particular gene. This can help identify variations or changes in the gene that might affect your health. This process is done in a lab using a sample of your cells.

47 services47 patients

Gene analysis (partner and localizer of brca2) full sequence analysis 81307

Gene analysis, specifically for the partner and localizer of BRCA2, involves examining your genetic code to identify any changes in this particular gene. This gene is significant in maintaining the health of your cells. The full sequence analysis means we look at every part of this gene to ensure it's working properly.

44 services44 patients

Gene analysis (retinal disorders), genomic sequence 81434

Gene analysis for retinal disorders is a process where your DNA is examined to identify any changes or mutations that may be causing or could lead to vision problems. It's like reading a book to find any spelling mistakes that could alter the story.

28 services28 patients

Gene analysis (neuroendocrine tumors), genomic sequence 81437

Gene analysis for neuroendocrine tumors involves studying the DNA sequence in your cells. This helps identify any genetic changes linked to these tumors. The information can aid in diagnosis, treatment planning and understanding your risk for certain conditions.

25 services25 patients

Gene analysis (survival of motor neuron 1, telomeric) of full sequence 81336

Gene analysis of the full sequence of Survival of Motor Neuron 1 (telomeric) is a test that examines your DNA to identify any changes in this specific gene. These changes could indicate conditions like Spinal Muscular Atrophy. It's a non-invasive procedure.

21 services21 patients

Gene analysis (cystic fibrosis transmembrane conductance regular) full gene sequence 81223

Gene analysis for cystic fibrosis involves examining the entire CFTR gene to identify any changes or mutations that could cause the disease. This can help in diagnosing and managing the condition effectively.

20 services20 patients

Methylation analysis (small nuclear ribonucleoprotein polypeptide n and ubiquitin protein ligase e3a) 81331

Methylation analysis is a test to study changes in your genes. In this case, it focuses on two specific genes, small nuclear ribonucleoprotein polypeptide N and ubiquitin protein ligase E3A. It helps identify gene alterations that can impact your health.

18 services18 patients

Gene analysis (adenomatous polyposis coli), full gene sequence 81201

Gene analysis of the adenomatous polyposis coli (APC) involves studying the entire sequence of the APC gene. This test helps identify mutations that could lead to conditions like familial adenomatous polyposis. The procedure is non-invasive and uses a blood sample.

16 services16 patients

Gene analysis (methyl cpg binding protein 2) duplication or deletion variants 81304

Gene analysis for Methyl CpG Binding Protein 2 (MECP2) duplication or deletion variants is a test that investigates changes in the MECP2 gene. This gene is crucial for brain development. Variations can lead to various health conditions. The test involves analyzing a sample of your DNA to identify these changes.

14 services14 patients

Gene analysis (survival of motor neuron 1, telomeric) for dosage/deletion 81329

Gene analysis for survival of motor neuron 1 (SMN1) involves studying your DNA to identify changes or deletions in the SMN1 gene. This gene plays a key role in motor neuron health. Alterations can lead to conditions like spinal muscular atrophy. The process is safe and non-invasive.

14 services14 patients

Gene analysis (methyl cpg binding protein 2) full sequence analysis 81302

Gene analysis, specifically Methyl CpG Binding Protein 2 (MECP2) full sequence analysis, is a detailed examination of your DNA. This test focuses on the MECP2 gene, which plays a crucial role in nerve cell function and development. The results can help identify alterations or mutations that may cause certain health conditions.

13 services13 patients

Gene analysis (tumor protein 53) full sequence analysis 81351

Gene analysis, specifically tumor protein 53 (TP53) full sequence analysis, is a test that examines the entire TP53 gene. This gene plays a key role in preventing cancer. If there are changes or mutations in this gene, it could lead to an increased risk of developing various types of cancer.

13 services13 patients

Test for detecting genes causing hearing loss genomic sequence analysis panel, at least 60 genes 81430

This is a genetic test that examines at least 60 different genes to identify any changes linked to hearing loss. By studying your DNA, the test can help determine if you have genes that may cause hearing loss, aiding in diagnosis and treatment planning.

12 services12 patients

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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 Genedx LLC's NPI number?

The NPI number for Genedx LLC is 1487632998. It was assigned to this organization in the NPPES registry on January 4, 2006. The provider was formerly known as GeneDx, Inc..

Where is Genedx LLC located?

Genedx LLC is located at 205 & 207 Perry Pkwy, Gaithersburg, MD 20877. The listed phone number is (301) 519-2100.

What is Genedx LLC's specialty?

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

Does Genedx LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Accreditation (number 21D0969951) is associated with this NPI, valid through December 9, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Genedx LLC accept?

Health plans from Blue Cross Blue Shield of Arizona, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Blue Cross and Blue Shield of Alabama, Blue Cross and Blue Shield of Kansas, Inc. and Blue Cross and Blue Shield of Nebraska and 14 other insurers list Genedx LLC 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 Genedx LLC was last updated on January 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.