CHARLES C CALENDA MD INC
NPI 1861565913
Ophthalmology in Warwick, RI
NPI Status: Active since November 16, 2006
Contact Information
404 TOLL GATE RD
WARWICK, RI
ZIP 02886
Phone: (401) 737-2200
Fax: (401) 739-8841
- Organization
- Ophthalmology
About CHARLES C CALENDA MD INC
This page provides the complete NPI Profile along with additional information for Charles C Calenda Md Inc, a provider established in Warwick, Rhode Island operating as a Ophthalmology. The healthcare provider is registered in the NPI registry with number 1861565913 assigned on November 2006. The practitioner's primary taxonomy code is 207W00000X with license number 0605 (RI). The provider is registered as an organization and their NPI record was last updated April 2026. Charles C Calenda Md Inc operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The provider's
- NPI
- 1861565913
- Provider Legal Name
- CHARLES C CALENDA MD INC
- Other Organization Name
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 404 TOLL GATE RD WARWICK, RI 02886
- Location Phone
- (401) 737-2200
- Location Fax
- (401) 739-8841
- Mailing Address
- 404 TOLL GATE RD WARWICK, RI 02886
- Mailing Phone
- (401) 737-2200
- Mailing Fax
- (401) 739-8841
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 11-16-2006
- Last Update Date
- 04-24-2026
- Code Navigator
Ophthalmologists like Charles C Calenda Md Inc 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.
- 0605
- 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.
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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NPI 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 1861565913, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 57 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1861565913, enumerated as an "organization" on November 16, 2006.
The provider is located at 404 TOLL GATE RD WARWICK, RI 02886 and the phone number is (401) 737-2200.
Ophthalmology with taxonomy code 207W00000X.
