MR. WILLIAM NATHAN WALLER CCC-SLP
NPI 1386949816
Speech-Language Pathologist in Chicago, IL

NPI Status: Active since January 13, 2011

Contact Information

675 N SAINT CLAIR ST
SUITE 15-200
CHICAGO, IL
ZIP 60611
Phone: (312) 695-9797

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  • Individual
  • Male
  • Speech-Language Pathologist

About WILLIAM WALLER

This page provides the complete NPI Profile along with additional information for William Waller, a provider established in Chicago, Illinois with a medical specialization in Speech-language Pathologist. The healthcare provider is registered in the NPI registry with number 1386949816 assigned on January 2011. The practitioner's primary taxonomy code is 235Z00000X with license number 146.009329 (IL). The provider is registered as an individual and his NPI record was last updated 9 years ago.

NPI
1386949816
Provider Name
MR. WILLIAM NATHAN WALLER CCC-SLP
Gender
Male
Entity Type
Individual
Location Address
675 N SAINT CLAIR ST SUITE 15-200 CHICAGO, IL 60611
Location Phone
(312) 695-9797
Mailing Address
680 N LAKE SHORE DR SUITE 1000 CHICAGO, IL 60611
Mailing Phone
(312) 695-9797
Is Sole Proprietor?
No
Enumeration Date
01-13-2011
Last Update Date
04-06-2017
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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
License No.
146.009329
License State
IL
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 1386949816, 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 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.

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

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 6 + 6 + 1 + 8 + 4 + 1 + 8 + 8 + 2 + 24 = 74

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

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1386949816.

Other Providers at the Same Location


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

Internal Medicine (Hematology)
675 N SAINT CLAIR ST, SUITE 21-100
CHICAGO, IL 60611
Internal Medicine
675 N SAINT CLAIR ST, SUITE 18-200
CHICAGO, IL 60611
Surgery (Surgical Oncology)
675 N SAINT CLAIR ST, SUITE 100
CHICAGO, IL 60611
Allergy & Immunology
675 N SAINT CLAIR ST, STE 18-250
CHICAGO, IL 60611
Internal Medicine
675 N SAINT CLAIR ST, GALTER 18-#200
CHICAGO, IL 60611
Internal Medicine
675 N SAINT CLAIR ST
CHICAGO, IL 60611
Internal Medicine (Nephrology)
675 N SAINT CLAIR ST, SUITE #250
CHICAGO, IL 60611
Obstetrics & Gynecology (Reproductive Endocrinology)
675 N SAINT CLAIR ST, SUITE #200
CHICAGO, IL 60611
Social Worker (Clinical)
675 N SAINT CLAIR ST, GALTER 20-100
CHICAGO, IL 60611
Internal Medicine
675 N SAINT CLAIR ST, GALTER 18-200
CHICAGO, IL 60611
Internal Medicine (Medical Oncology)
675 N SAINT CLAIR ST, SUITE 100
CHICAGO, IL 60611
Internal Medicine (Medical Oncology)
675 N SAINT CLAIR ST, GALTER 21-100
CHICAGO, IL 60611
Anesthesiology (Pain Medicine)
675 N SAINT CLAIR ST, SUITE 100
CHICAGO, IL 60611
Internal Medicine (Cardiovascular Disease)
675 N SAINT CLAIR ST, GALTER 19-100
CHICAGO, IL 60611
Surgery (Vascular Surgery)
675 N SAINT CLAIR ST, NORTHWESTERN MEMORIAL HOSPIALT GALTER 19-100
CHICAGO, IL 60611
Physician Assistant
675 N SAINT CLAIR ST, GALTER 21-100
CHICAGO, IL 60611
Obstetrics & Gynecology (Reproductive Endocrinology)
675 N SAINT CLAIR ST, GALTER 14-200
CHICAGO, IL 60611
Ophthalmology
675 N SAINT CLAIR ST, GALTER 15-150
CHICAGO, IL 60611
Internal Medicine (Pulmonary Disease)
675 N SAINT CLAIR ST, GALTER 18-250
CHICAGO, IL 60611
Urology
675 N SAINT CLAIR ST, GALTER 17-250
CHICAGO, IL 60611

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1386949816, enumerated as an "individual" on January 13, 2011.

The provider is located at 675 N SAINT CLAIR ST SUITE 15-200 CHICAGO, IL 60611 and the phone number is (312) 695-9797.

Speech-Language Pathologist with taxonomy code 235Z00000X.