KRISTIN LEE NIESSINK M.S., R.D., L.D.N.
NPI 1720390669
Dietitian, Registered in Portsmouth, RI

NPI Status: Active since July 08, 2010

Contact Information

162 OLD MILL LN
PORTSMOUTH, RI
ZIP 02871
Phone: (401) 368-7614
Fax: (401) 667-7339

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  • Individual
  • Female
  • Dietitian, Registered

About KRISTIN NIESSINK

This page provides the complete NPI Profile along with additional information for Kristin Niessink, a provider established in Portsmouth, Rhode Island with a medical specialization in Dietitian, Registered. The healthcare provider is registered in the NPI registry with number 1720390669 assigned on July 2010. The practitioner's primary taxonomy code is 133V00000X with license number LDN00545 (RI). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1720390669
Provider Name
KRISTIN LEE NIESSINK M.S., R.D., L.D.N.
Gender
Female
Entity Type
Individual
Location Address
162 OLD MILL LN PORTSMOUTH, RI 02871
Location Phone
(401) 368-7614
Location Fax
(401) 667-7339
Mailing Address
162 OLD MILL LN PORTSMOUTH, RI 02871
Mailing Phone
(401) 368-7614
Mailing Fax
(401) 667-7339
Is Sole Proprietor?
Yes
Enumeration Date
07-08-2010
Last Update Date
04-29-2025
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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

Dietitian, Registered

Taxonomy Code
133V00000X
Type
Dietary & Nutritional Service Providers
License No.
LDN00545
License State
RI
Taxonomy Description
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.

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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 1720390669, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
7
Unchanged
Pos 3
2
Doubled → 4
Pos 4
0
Unchanged
Pos 5
3
Doubled → 6
Pos 6
9
Unchanged
Pos 7
0
Doubled → 0
Pos 8
6
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
9
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 3 → 6 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 4 + 0 + 6 + 9 + 0 + 6 + 1 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1720390669.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1720390669, enumerated as an "individual" on July 08, 2010.

The provider is located at 162 OLD MILL LN PORTSMOUTH, RI 02871 and the phone number is (401) 368-7614.

Dietitian, Registered with taxonomy code 133V00000X.