RUBY MALLOY LONGO
NPI 1407709355
Specialist/Technologist - Speech-Language Assistant in San Dimas, CA
NPI Status: Active since February 19, 2026
Contact Information
1111 W COVINA BLVD STE 100
SAN DIMAS, CA
ZIP 91773
Phone: (909) 675-7017
- Individual
- Female
- Specialist/Technologist
- Speech-Language Assistant
About RUBY LONGO
This page provides the complete NPI Profile along with additional information for Ruby Longo, a provider established in San Dimas, California with a medical specialization in Specialist/technologist, focusing in speech-language assistant . The healthcare provider is registered in the NPI registry with number 1407709355 assigned on February 2026. The practitioner's primary taxonomy code is 2355S0801X with license number 10156 (CA). The provider is registered as an individual and her NPI record was last updated February 2026.
- NPI
- 1407709355
- Provider Name
- RUBY MALLOY LONGO
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 1111 W COVINA BLVD STE 100 SAN DIMAS, CA 91773
- Location Phone
- (909) 675-7017
- Mailing Address
- 645 N UKIAH WAY UPLAND, CA 91786
- Is Sole Proprietor?
- No
- Enumeration Date
- 02-19-2026
- Last Update Date
- 02-19-2026
- 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
Specialist/Technologist Speech-Language Assistant
- Taxonomy Code
- 2355S0801X
- Type
- Speech, Language and Hearing Service Providers
- License No.
- 10156
- License State
- CA
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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 1407709355, we treat the final digit (5) 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 5).
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 55 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 4 providers are registered at the same or a nearby location.
SAN DIMAS, CA 91773
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1407709355, enumerated as an "individual" on February 19, 2026.
The provider is located at 1111 W COVINA BLVD STE 100 SAN DIMAS, CA 91773 and the phone number is (909) 675-7017.
Specialist/Technologist with taxonomy code 2355S0801X and a focus in Speech-Language Assistant.
