OPTX RHODE ISLAND
NPI 1770761660
Ophthalmology in Johnston, RI
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
Specialties & Licenses 3
Other Names 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Optx Rhode Island is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
6Medicare enrollment records show 6 clinicians reassign Medicare billing to Optx Rhode Island, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.
Clinicians, nearest first (6)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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, RIMedical 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 IncAccepts 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.
Medicare Product Categories
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.
Is Giulio G Diamante MD Inc enrolled in Medicare?
Yes. Giulio G Diamante MD Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Giulio G Diamante MD Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Giulio G Diamante MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Optometry (5) and Ophthalmology (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Optx Rhode Island · NPI 1770761660
Ophthalmology organization in Johnston, Rhode Island. Organization record, active in the CMS NPPES registry since February 4, 2008.
## Identity
- **NPI:** 1770761660 (Entity type: Organization)
- **Enumerated:** February 4, 2008
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **Legal business name:** Giulio G Diamante Md Inc
- **Organization subpart:** No
- **Authorized official:** Giulio Diamante, OWNER, PRESIDENT
## Practice location
- **Address:** 1277 HARTFORD AVE, Johnston, RI 02919-7121
- **Phone:** (401) 521-3606 · **Fax:** (401) 453-3288
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 6 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Optometry (5), Ophthalmology (1); 4 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 21, 2020
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1770761660) · Data from the CMS NPPES public registry.