Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. THOMAS RAYMOND LEDDY MD
NPI 1689631699
Ophthalmology in Warwick, RI

Active since April 26, 2006
390 TOLL GATE RD, SUITE 112, WARWICK, RI 02886(401) 732-2662(401) 732-2669 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Male
  • Ophthalmology
  • Medicare Quality Reporting

About THOMAS LEDDY

This page provides the complete NPI Profile along with additional information for Thomas Leddy, a provider established in Warwick, Rhode Island with a medical specialization in Ophthalmology. The healthcare provider is registered in the NPI registry with number 1689631699 assigned on April 2006. The practitioner's primary taxonomy code is 207W00000X with license number MD04438 (RI). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1689631699
Provider Name
DR. THOMAS RAYMOND LEDDY MD
Gender
Male
Entity Type
Individual
Location Address
390 TOLL GATE RD SUITE 112 WARWICK, RI 02886
Location Phone
(401) 732-2662
Location Fax
(401) 732-2669
Mailing Address
390 TOLL GATE RD SUITE 112 WARWICK, RI 02886
Mailing Phone
(401) 732-2662
Mailing Fax
(401) 732-2669
Is Sole Proprietor?
No
Enumeration Date
04-26-2006
Last Update Date
07-13-2026
Code Navigator

Ophthalmologists like Thomas Leddy specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
MD04438
License State
RI
Taxonomy Description
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.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
9000459MEDICAID (05)RI 

Quality Reporting

The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.

Quality Measure Performance Number of Patients
Implementation of improvements that contribute to more timely communication of test resultsYesN/A
Timely communication of test results defined as timely identification of abnormal test results with timely follow-up.
Provide 24/7 Access to MIPS Eligible Clinicians or Groups Who Have Real-Time Access to Patient's Medical RecordYesN/A
• Provide 24/7 access to MIPS eligible clinicians, groups, or care teams for advice about urgent and emergent care (e.g., MIPS eligible clinician and care team access to medical record, cross-coverage with access to medical record, or protocol-driven nurse line with access to medical record) that could include one or more of the following: • Expanded hours in evenings and weekends with access to the patient medical record (e.g., coordinate with small practices to provide alternate hour office visits and urgent care); • Use of alternatives to increase access to care team by MIPS eligible clinicians and groups, such as e-visits, phone visits, group visits, home visits and alternate locations (e.g., senior centers and assisted living centers); and/or Provision of same-day or next-day access to a consistent MIPS eligible clinician, group or care team when needed for urgent care or transition management.
Use of decision support and standardized treatment protocolsYesN/A
Use decision support and standardized treatment protocols to manage workflow in the team to meet patient needs.

Reviews for DR. THOMAS RAYMOND LEDDY MD

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NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1689631699, we treat the final digit (9) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
9
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
3
Unchanged
Pos 7
1
Doubled → 2
Pos 8
6
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 8 → 16 → 7 6 → 12 → 3 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 6 + 1 + 6 + 9 + 1 + 2 + 3 + 2 + 6 + 1 + 8 + 24 = 71

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1689631699.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Surgery
390 TOLL GATE RD, STE.200
WARWICK, RI 02886
Surgery
390 TOLL GATE RD, STE.200
WARWICK, RI 02886
Surgery
390 TOLL GATE RD, STE.200
WARWICK, RI 02886
Obstetrics & Gynecology
390 TOLL GATE RD, SUITE 201
WARWICK, RI 02886
Internal Medicine
390 TOLL GATE RD, SUITE 103
WARWICK, RI 02886
Obstetrics & Gynecology (Gynecology)
390 TOLL GATE RD, SUITE 101
WARWICK, RI 02886
Social Worker (Clinical)
390 TOLL GATE RD, STE. K 104
WARWICK, RI 02886
Obstetrics & Gynecology
390 TOLL GATE RD, SUITE 205
WARWICK, RI 02886
Technician/Technologist (Optician)
390 TOLL GATE RD, SUITE 105
WARWICK, RI 02886
Internal Medicine (Cardiovascular Disease)
390 TOLL GATE RD, SUITE 205
WARWICK, RI 02886
Internal Medicine (Cardiovascular Disease)
390 TOLL GATE RD, SUITE 205
WARWICK, RI 02886
Midwife
390 TOLL GATE RD, SUITE 101
WARWICK, RI 02886
Internal Medicine (Cardiovascular Disease)
390 TOLL GATE RD, SUITE 202
WARWICK, RI 02886
Ophthalmology
390 TOLL GATE RD
WARWICK, RI 02886
Urology
390 TOLL GATE RD, SUITE 204
WARWICK, RI 02886
Internal Medicine (Cardiovascular Disease)
390 TOLL GATE RD, STE 108
WARWICK, RI 02886
Surgery
390 TOLL GATE RD, STE.200
WARWICK, RI 02886
Optometrist
390 TOLL GATE RD
WARWICK, RI 02886
Family Medicine
390 TOLL GATE RD, SUITE 203
WARWICK, RI 02886
Social Worker (Clinical)
390 TOLL GATE RD
WARWICK, RI 02886

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1689631699, enumerated as an "individual" on April 26, 2006.

The provider is located at 390 TOLL GATE RD SUITE 112 WARWICK, RI 02886 and the phone number is (401) 732-2662.

Ophthalmology with taxonomy code 207W00000X.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.