ROBERT J. CASTELLI
NPI 1669332979
Prosthetist in Northport, NY
NPI Status: Active since November 18, 2025
Contact Information
79 MIDDLEVILLE RD
NORTHPORT, NY
ZIP 11768
Phone: (631) 261-4400
- Individual
- Male
- Prosthetist
About ROBERT CASTELLI
This page provides the complete NPI Profile along with additional information for Robert Castelli, a provider established in Northport, New York with a medical specialization in Prosthetist. The healthcare provider is registered in the NPI registry with number 1669332979 assigned on November 2025. The practitioner's primary taxonomy code is 224P00000X. The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1669332979
- Provider Name
- ROBERT J. CASTELLI
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 79 MIDDLEVILLE RD NORTHPORT, NY 11768
- Location Phone
- (631) 261-4400
- Mailing Address
- 79 MIDDLEVILLE RD NORTHPORT, NY 11768
- Mailing Phone
- (631) 261-4400
- Is Sole Proprietor?
- No
- Enumeration Date
- 11-18-2025
- Last Update Date
- 11-18-2025
- Code Navigator
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
Prosthetist
- Taxonomy Code
- 224P00000X
- Type
- Respiratory, Developmental, Rehabilitative and Restorative Service Providers
- Taxonomy Description
- A health care professional who is specifically educated and trained to manage comprehensive prosthetic patient care for individuals who have sustained complete or partial limb loss or absence. Prosthetists assess specific patient needs, formulate an appropriate treatment plan, implement the treatment plan and provide follow-up care.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 222Z00000X | Respiratory, Developmental, Rehabilitative and Restorative Service Providers | Orthotist |
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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 1669332979, 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.
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 71 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
NORTHPORT, NY 11768
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1669332979, enumerated as an "individual" on November 18, 2025.
The provider is located at 79 MIDDLEVILLE RD NORTHPORT, NY 11768 and the phone number is (631) 261-4400.
Prosthetist with taxonomy code 224P00000X.
