RICHARD L. RYSDAM DO
NPI 1679918031
Preventive Medicine - Public Health & General Preventive Medicine in Seattle, WA

NPI Status: Active since April 29, 2013

Contact Information

4742 42ND AVE SW # 292
SEATTLE, WA
ZIP 98116
Phone: (206) 935-6306

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  • Individual
  • Male
  • Preventive Medicine
  • Public Health & General Preventive Medic...

About RICHARD RYSDAM

This page provides the complete NPI Profile along with additional information for Richard Rysdam, a provider established in Seattle, Washington with a medical specialization in Preventive Medicine, focusing in public health & general preventive medicine . The healthcare provider is registered in the NPI registry with number 1679918031 assigned on April 2013. The practitioner's primary taxonomy code is 2083P0901X with license number OP 00000998 (WA). The provider is registered as an individual and his NPI record was last updated 13 years ago.

NPI
1679918031
Provider Name
RICHARD L. RYSDAM DO
Gender
Male
Entity Type
Individual
Location Address
4742 42ND AVE SW # 292 SEATTLE, WA 98116
Location Phone
(206) 935-6306
Mailing Address
4742 42ND AVE SW # 292 SEATTLE, WA 98116
Mailing Phone
(206) 935-6306
Is Sole Proprietor?
Yes
Enumeration Date
04-29-2013
Last Update Date
04-29-2013
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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

Preventive Medicine Public Health & General Preventive Medicine

Taxonomy Code
2083P0901X
Type
Allopathic & Osteopathic Physicians
License No.
OP 00000998
License State
WA
Taxonomy Description
Public health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with knowledge of primary, secondary, and tertiary prevention-oriented clinical practice in a wide variety of settings.

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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 1679918031, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
1
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
0
Unchanged
Pos 9
3
Doubled → 6
Check
1
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 7 → 14 → 5 9 → 18 → 9 8 → 16 → 7 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 4 + 9 + 1 + 8 + 1 + 1 + 6 + 0 + 6 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1679918031.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679918031, enumerated as an "individual" on April 29, 2013.

The provider is located at 4742 42ND AVE SW # 292 SEATTLE, WA 98116 and the phone number is (206) 935-6306.

Preventive Medicine with taxonomy code 2083P0901X and a focus in Public Health & General Preventive Medicine.