SYDNEY STEFFAN M.S.
NPI 1891535456
Speech-Language Pathologist in Spokane, WA
NPI Status: Active since May 30, 2024
Contact Information
220 E ROWAN AVE
SPOKANE, WA
ZIP 99207
Phone: (509) 483-4060
- Individual
- Female
- Speech-Language Pathologist
About SYDNEY STEFFAN
This page provides the complete NPI Profile along with additional information for Sydney Steffan, a provider established in Spokane, Washington with a medical specialization in Speech-language Pathologist. The healthcare provider is registered in the NPI registry with number 1891535456 assigned on May 2024. The practitioner's primary taxonomy code is 235Z00000X. The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1891535456
- Provider Name
- SYDNEY STEFFAN M.S.
- Other Name
- SYDNEY THOMPSON M.S. CCC-SLP
- Other Name Type
- Other Name (5)
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 220 E ROWAN AVE SPOKANE, WA 99207
- Location Phone
- (509) 483-4060
- Mailing Address
- 656 N CEDAR ST APT 256 SPOKANE, WA 99201
- Mailing Phone
- (509) 953-3461
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-30-2024
- Last Update Date
- 09-10-2025
- 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
Speech-Language Pathologist
- Taxonomy Code
- 235Z00000X
- Type
- Speech, Language and Hearing Service Providers
- Taxonomy Description
- The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.
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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 1891535456, we treat the final digit (6) 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).
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 54 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 16 providers are registered at the same or a nearby location.
SPOKANE, WA 99207
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1891535456, enumerated as an "individual" on May 30, 2024.
The provider is located at 220 E ROWAN AVE SPOKANE, WA 99207 and the phone number is (509) 483-4060.
Speech-Language Pathologist with taxonomy code 235Z00000X.
