G&S MEDICAL ASSOCIATES LLC
NPI 1982982336
Internal Medicine in Paterson, NJ

Q: What is the provider's specialty?

The provider's specialty is Internal Medicine with taxonomy code 207R00000X.

Active since August 02, 2011CLIA Certified · 9 labs

606 BROADWAY, PATERSON, NJ 07514(973) 523-1800(973) 689-3081 Get Directions Write a Review

NPPES record last updated: July 21, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

On this page

About G&s Medical Associates Llc NPPES

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

G&S MEDICAL ASSOCIATES LLC (NPI 1982982336) is a healthcare organization registered as an internal medicine in Paterson, New Jersey and active in the NPI registry since August 2011. The organization holds 9 active CLIA laboratory certificates, maintains 6 additional practice locations, and lists Gammal A Hassanien, Practice Owner, as its authorized official.

NPPES Registry Identity

NPI1982982336

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameG&S MEDICAL ASSOCIATES LLC

Location Address606 BROADWAYPaterson, NJ 07514-1916

Mailing Address606 BroadwayPaterson, NJ 07514-1916 · (973) 679-0393 · Fax (973) 689-3081

Phone(973) 523-1800

Fax(973) 689-3081

Organization SubpartNo

Authorized OfficialGammal A HassanienPractice Owner · (973) 523-4000

Enumeration DateAugust 2, 2011

Last NPPES UpdateJuly 21, 2025

NPPES CertifiedJuly 16, 2025

✔ NPI 1982982336 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 7

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X

Also ListedGeneral PracticeTaxonomy 208D00000X

Also ListedPodiatristTaxonomy 213E00000X

Also ListedPhysician AssistantTaxonomy 363A00000X

Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X

Also ListedNurse Practitioner · GerontologyTaxonomy 363LG0600X

606 BROADWAY, Paterson, NJ 07514

Open in Google Maps ↗

Secondary Practice Locations 6

Location 191 Main StPaterson, NJ 07505-1026 · Phone (973) 523-4000 · Fax (973) 689-3081

Location 280 Passaic AvePassaic, NJ 07055-4860 · Phone (973) 779-5554 · Fax (976) 689-3081

Location 3355 21st AvePaterson, NJ 07501-3738 · Phone (973) 810-1200 · Fax (973) 689-3081

Location 4295 BroadwayPaterson, NJ 07501-2000 · Phone (973) 705-7788 · Fax (973) 689-3081

Location 534 Mill StPaterson, NJ 07501-1825 · Phone (973) 705-7700 · Fax (973) 689-3081

Location 6335 Passaic StPassaic, NJ 07055-5818 · Phone (973) 779-5554 · Fax (973) 689-3081

Other Identifiers 1

Medicaid0427268NJ

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware, Baylor Scott and White Health Plan and more.Insurance ›

CLIA Laboratory Certificates CMS CLIA 9

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 Waiver 31D2218401

G&s Medical Associates LLC · Passaic, NJ

Active · expires Mar 28, 2027

CLIA Number31D2218401

Laboratory TypePhysician Office

Certificate Effective DateMarch 29, 2025

Certificate Expiration DateMarch 28, 2027

Laboratory DirectorGevorg Martirosyan

Laboratory Phone(973) 523-4000

Laboratory LocationG&s Medical Associates LLC80 Passaic Ave, Passaic, NJ 07055

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 31D2218404

G&s Medical Associates LLC · Passaic, NJ

Active · expires Mar 28, 2027

CLIA Number31D2218404

Laboratory TypePhysician Office

Certificate Effective DateMarch 29, 2025

Certificate Expiration DateMarch 28, 2027

Laboratory DirectorGevorg Martirosyan

Laboratory Phone(973) 523-4000

Laboratory LocationG&s Medical Associates LLC335 Passaic Street, Passaic, NJ 07055

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 31D2218406

G&s Medical Associates LLC · Paterson, NJ

Active · expires Mar 28, 2027

CLIA Number31D2218406

Laboratory TypePhysician Office

Certificate Effective DateMarch 29, 2025

Certificate Expiration DateMarch 28, 2027

Laboratory DirectorGevorg Martirosyan

Laboratory Phone(973) 523-4000

Laboratory LocationG&s Medical Associates LLC91 Main St, Paterson, NJ 07505

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 31D0940343

G&s Medical Associates LLC · Paterson, NJ

Active · expires Mar 14, 2027

CLIA Number31D0940343

Laboratory TypePhysician Office

Certificate Effective DateMarch 15, 2025

Certificate Expiration DateMarch 14, 2027

Laboratory DirectorGevorg H. Martirosyan

Laboratory Phone(973) 523-4000

Laboratory LocationG&s Medical Associates LLC355 21st Avenue, Paterson, NJ 07501

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Certificate of Accreditation 31D2155350

G&s Medical Associates · Paterson, NJ

Active · expires Mar 3, 2028

CLIA Number31D2155350

Laboratory TypePhysician Office

Certificate Effective DateMarch 4, 2026

Certificate Expiration DateMarch 3, 2028

Laboratory DirectorDr. Gammal Hassanien

Laboratory Phone(908) 240-8142

Laboratory LocationG&s Medical Associates606 Broadway, Paterson, NJ 07514

CLIA data matches this NPI record on: Address Name

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.

Certificate of Waiver 31D2292282

G&s Medical Associates LLC · Paterson, NJ

Active · expires Oct 23, 2027

CLIA Number31D2292282

Laboratory TypePhysician Office

Certificate Effective DateOctober 24, 2025

Certificate Expiration DateOctober 23, 2027

Laboratory DirectorGammal A. Hassanien

Laboratory Phone(973) 689-3081

Laboratory LocationG&s Medical Associates LLC295 Broadway, Paterson, NJ 07501

CLIA data matches this NPI record on: Address Name

This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 14

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

PASSAIC COUNTY INTEGRATED

Family Medicine (Geriatric Medicine)