YOON SIK CHOI CMT
NPI 1326909417
Massage Therapist in La Crescenta, CA

NPI Status: Active since November 19, 2025

Contact Information

3031 MONTROSE AVE APT 18
LA CRESCENTA, CA
ZIP 91214
Phone: (213) 820-2060

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  • Individual
  • Male
  • Massage Therapist

About YOON SIK CHOI

This page provides the complete NPI Profile along with additional information for Yoon Sik Choi, a provider established in La Crescenta, California with a medical specialization in Massage Therapist. The healthcare provider is registered in the NPI registry with number 1326909417 assigned on November 2025. The practitioner's primary taxonomy code is 225700000X with license number 3845 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1326909417
Provider Name
YOON SIK CHOI CMT
Gender
Male
Entity Type
Individual
Location Address
3031 MONTROSE AVE APT 18 LA CRESCENTA, CA 91214
Location Phone
(213) 820-2060
Mailing Address
3031 MONTROSE AVE APT 18 LA CRESCENTA, CA 91214
Mailing Phone
(213) 820-2060
Is Sole Proprietor?
No
Enumeration Date
11-19-2025
Last Update Date
11-19-2025
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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

Massage Therapist

Taxonomy Code
225700000X
Type
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.
3845
License State
CA
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 1326909417, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
3
Unchanged
Pos 3
2
Doubled → 4
Pos 4
6
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
0
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
1
Doubled → 2
Check
7
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 9 → 18 → 9 9 → 18 → 9 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 4 + 6 + 1 + 8 + 0 + 1 + 8 + 4 + 2 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1326909417.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1326909417, enumerated as an "individual" on November 19, 2025.

The provider is located at 3031 MONTROSE AVE APT 18 LA CRESCENTA, CA 91214 and the phone number is (213) 820-2060.

Massage Therapist with taxonomy code 225700000X.