DR. KAREN G JOHNSON PH.D.
NPI 1548572035
Speech-Language Pathologist in Washington, DC

NPI Status: Active since July 13, 2010

Contact Information

2224 34TH ST SE
WASHINGTON, DC
ZIP 20020
Phone: (202) 821-2718
Fax: (202) 582-0283

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  • Individual
  • Female
  • Speech-Language Pathologist

About KAREN JOHNSON

This page provides the complete NPI Profile along with additional information for Karen Johnson, a provider established in Washington, District Of Columbia with a medical specialization in Speech-language Pathologist. The healthcare provider is registered in the NPI registry with number 1548572035 assigned on July 2010. The practitioner's primary taxonomy code is 235Z00000X with license number SLP000323 (DC). The provider is registered as an individual and her NPI record was last updated 11 years ago.

NPI
1548572035
Provider Name
DR. KAREN G JOHNSON PH.D.
Gender
Female
Entity Type
Individual
Location Address
2224 34TH ST SE WASHINGTON, DC 20020
Location Phone
(202) 821-2718
Location Fax
(202) 582-0283
Mailing Address
2224 34TH ST SE WASHINGTON, DC 20020
Mailing Phone
(202) 821-2718
Mailing Fax
(202) 582-0283
Is Sole Proprietor?
Yes
Enumeration Date
07-13-2010
Last Update Date
03-25-2015
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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.
SLP000323
License State
DC
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.

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)
1235Z00000XSpeech, Language and Hearing Service Providers

Speech-Language Pathologist

02939 (MD)

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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 1548572035, 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 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.

Pos 1
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
4
Doubled → 8
Pos 4
8
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
7
Unchanged
Pos 7
2
Doubled → 4
Pos 8
0
Unchanged
Pos 9
3
Doubled → 6
Check
5
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 4 → 8 5 → 10 → 1 2 → 4 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 8 + 8 + 1 + 0 + 7 + 4 + 0 + 6 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1548572035.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Speech-Language Pathologist
2224 34TH ST SE
WASHINGTON, DC 20020

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1548572035, enumerated as an "individual" on July 13, 2010.

The provider is located at 2224 34TH ST SE WASHINGTON, DC 20020 and the phone number is (202) 821-2718.

Speech-Language Pathologist with taxonomy code 235Z00000X.