OPTX RHODE ISLAND
NPI 1770761660
Ophthalmology in Johnston, RI

Active since February 04, 2008CLIA 41D2106441 · Waiver
1277 HARTFORD AVE, JOHNSTON, RI 02919(401) 521-3606(401) 453-3288 Get Directions Write a Review

NPPES record last updated: July 21, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Optx Rhode Island NPPES

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

OPTX RHODE ISLAND (NPI 1770761660) is a healthcare organization registered as an ophthalmology in Johnston, Rhode Island and active in the NPI registry since February 2008. The organization holds a CLIA Waiver certificate valid through December 17, 2027 and lists Giulio Gerardo Diamante, Owner, President, as its authorized official.

NPPES Registry Identity

NPI1770761660
Entity TypeOrganization
Primary Taxonomy207W00000X
Legal Business NameGIULIO G DIAMANTE MD INC
Location Address1277 HARTFORD AVEJohnston, RI 02919-7121
Mailing Address1277 Hartford AveJohnston, RI 02919-7121 · (401) 521-3606 · Fax (401) 453-3288
Fax(401) 453-3288
Organization SubpartNo
Authorized OfficialGiulio Gerardo DiamanteOwner, President · (401) 521-3606
Enumeration DateFebruary 4, 2008
Last NPPES UpdateJuly 21, 2020
NPPES CertifiedJuly 21, 2020
NPI 1770761660 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians
Taxonomy Code207W00000X
Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

Also ListedOptometristTaxonomy 152W00000X
Also ListedEyewear SupplierTaxonomy 332H00000X
1277 HARTFORD AVE, Johnston, RI 02919

Other Names 1

Doing Business AsOptx Rhode Island

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 MULTIPLE SINGLE SPECIALTY GROUP

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 Waiver 41D2106441

Optx · Johnston, RI
Active · expires Dec 17, 2027
CLIA Number41D2106441
Laboratory TypePhysician Office
Certificate Effective DateDecember 18, 2025
Certificate Expiration DateDecember 17, 2027
Laboratory DirectorGiulio G. Diamante MD
Laboratory Phone(401) 521-3606
Laboratory LocationOptx1277 Hartford Ave, Johnston, RI 02919
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory to perform only waived tests.

Medical Equipment Supplier Medicare DMEPOS 3

Medicare supplier enrollment and the product categories Giulio Diamante MD Inc carries, from the Medicare DMEPOS supplier directory.

Giulio Diamante MD Inc

DMEPOS supplier · Johnston, RIOperated by Giulio G Diamante MD Inc

Accepts Medicare assignment

Giulio Diamante MD Inc agrees to accept the Medicare-approved amount as full payment for covered equipment and supplies. Medicare patients are not billed beyond the standard deductible and coinsurance.

PTAN (Medicare Supplier Number)20402255
Medicare Participant SinceFebruary 7, 2022
Supplier Location1277 Hartford AvenueJohnston, RI 02919
Provider TypePhysician – Ophthalmology
Supplier Specialties
Optician

Medicare Product Categories

Prosthetic Lenses: Conventional Eyeglasses
Conventional Eyeglasses
Prosthetic Lenses: Conventional Contact Lenses
Conventional Contact Lenses
Prosthetic Lenses: Prosthetics Cataract Lenses
Cataract Eyeglasses
Product categories are from the Medicare DMEPOS supplier directory. Contact the supplier to confirm current availability of specific items.

Other Providers at the Same Location NPPES 4

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

Ophthalmology
1277 HARTFORD AVE
JOHNSTON, RI 02919
Optometrist
1277 HARTFORD AVE
JOHNSTON, RI 02919
Optometrist
1277 HARTFORD AVE
JOHNSTON, RI 02919
Optometrist
1277 HARTFORD AVE
JOHNSTON, RI 02919

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 Giulio G Diamante MD Inc's NPI number?

The NPI number for Giulio G Diamante MD Inc is 1770761660. It was assigned to this organization in the NPPES registry on February 4, 2008. The provider is doing business as Optx Rhode Island.

Where is Giulio G Diamante MD Inc located?

Giulio G Diamante MD Inc is located at 1277 Hartford Ave, Johnston, RI 02919. The listed phone number is (401) 521-3606.

What is Giulio G Diamante MD Inc's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Does Giulio G Diamante MD Inc accept Medicare assignment for medical equipment?

Yes. As a Medicare medical equipment supplier, Giulio Diamante MD Inc accepts Medicare assignment: the supplier accepts the Medicare-approved amount as payment in full for covered equipment and supplies.

Does Giulio G Diamante MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 41D2106441) is associated with this NPI, valid through December 17, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Giulio G Diamante MD Inc was last updated on July 21, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.