JOANNA KARRAKER
NPI 1023772456
Durable Medical Equipment & Medical Supplies in Oakland, CA

NPI Status: Active since October 21, 2021

Contact Information

4400 HARBORD DR
OAKLAND, CA
ZIP 94618
Phone: (510) 540-8200

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  • Individual
  • Female
  • Durable Medical Equipment & Medical Supp...

About JOANNA KARRAKER

This page provides the complete NPI Profile along with additional information for Joanna Karraker, a provider established in Oakland, California with a medical specialization in Durable Medical Equipment & Medical Supplies. The healthcare provider is registered in the NPI registry with number 1023772456 assigned on October 2021. The practitioner's primary taxonomy code is 332B00000X. The provider is registered as an individual and her NPI record was last updated 5 years ago.

NPI
1023772456
Provider Name
JOANNA KARRAKER
Gender
Female
Entity Type
Individual
Location Address
4400 HARBORD DR OAKLAND, CA 94618
Location Phone
(510) 540-8200
Mailing Address
4400 HARBORD DR OAKLAND, CA 94618
Is Sole Proprietor?
Yes
Enumeration Date
10-21-2021
Last Update Date
10-21-2021
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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

Durable Medical Equipment & Medical Supplies

Taxonomy Code
332B00000X
Type
Suppliers
Taxonomy Description
A supplier of medical equipment such as respirators, wheelchairs, home dialysis systems, or monitoring systems, that are prescribed by a physician for a patient's use in the home and that are usable for an extended period of time.

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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 1023772456, 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.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
2
Doubled → 4
Pos 4
3
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
7
Unchanged
Pos 7
2
Doubled → 4
Pos 8
4
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
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 2 → 4 7 → 14 → 5 2 → 4 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 4 + 3 + 1 + 4 + 7 + 4 + 4 + 1 + 0 + 24 = 54

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.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1023772456.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Durable Medical Equipment & Medical Supplies
4400 HARBORD DR
OAKLAND, CA 94618
Physician Assistant
4400 HARBORD DR
OAKLAND, CA 94618

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1023772456, enumerated as an "individual" on October 21, 2021.

The provider is located at 4400 HARBORD DR OAKLAND, CA 94618 and the phone number is (510) 540-8200.

Durable Medical Equipment & Medical Supplies with taxonomy code 332B00000X.