MS. SANDRA LARSEN LMT, CMLDT, MMT
NPI 1558669291
Massage Therapist in Staten Island, NY

NPI Status: Active since March 04, 2011

Contact Information

159 KENILWORTH AVE
STATEN ISLAND, NY
ZIP 10312
Phone: (917) 971-9663

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  • Individual
  • Female
  • Massage Therapist

About SANDRA LARSEN

This page provides the complete NPI Profile along with additional information for Sandra Larsen, a provider established in Staten Island, New York with a medical specialization in Massage Therapist. The healthcare provider is registered in the NPI registry with number 1558669291 assigned on March 2011. The practitioner's primary taxonomy code is 225700000X with license number 022541 (NY). The provider is registered as an individual and her NPI record was last updated January 2026.

NPI
1558669291
Provider Name
MS. SANDRA LARSEN LMT, CMLDT, MMT
Gender
Female
Entity Type
Individual
Location Address
159 KENILWORTH AVE STATEN ISLAND, NY 10312
Location Phone
(917) 971-9663
Mailing Address
159 KENILWORTH AVE STATEN ISLAND, NY 10312
Mailing Phone
(917) 971-9663
Is Sole Proprietor?
Yes
Enumeration Date
03-04-2011
Last Update Date
01-27-2026
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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

Massage Therapist

Taxonomy Code
225700000X
Type
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.
022541
License State
NY
Taxonomy Description
An individual trained in the manipulation of tissues (as by rubbing, stroking, kneading, or tapping) with the hand or an instrument for remedial or hygienic purposes.

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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 1558669291, 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
5
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
8
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
6
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
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 5 → 10 → 1 6 → 12 → 3 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 0 + 8 + 1 + 2 + 6 + 1 + 8 + 2 + 1 + 8 + 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 1558669291.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1558669291, enumerated as an "individual" on March 04, 2011.

The provider is located at 159 KENILWORTH AVE STATEN ISLAND, NY 10312 and the phone number is (917) 971-9663.

Massage Therapist with taxonomy code 225700000X.