JUSTIN YOON DPT
NPI 1255274254
Physical Therapist in Brookline, MA

NPI Status: Active since April 13, 2026

Contact Information

54 HARVARD ST
BROOKLINE, MA
ZIP 02445
Phone: (617) 262-0030
Fax: (617) 623-4224

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  • Individual
  • Male
  • Physical Therapist

About JUSTIN YOON

This page provides the complete NPI Profile along with additional information for Justin Yoon, a provider established in Brookline, Massachusetts with a medical specialization in Physical Therapist. The healthcare provider is registered in the NPI registry with number 1255274254 assigned on April 2026. The practitioner's primary taxonomy code is 225100000X with license number 89381 (MA). The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1255274254
Provider Name
JUSTIN YOON DPT
Gender
Male
Entity Type
Individual
Location Address
54 HARVARD ST BROOKLINE, MA 02445
Location Phone
(617) 262-0030
Location Fax
(617) 623-4224
Mailing Address
54 HARVARD ST BROOKLINE, MA 02445
Mailing Phone
(617) 262-0030
Mailing Fax
(617) 623-4224
Is Sole Proprietor?
No
Enumeration Date
04-13-2026
Last Update Date
04-13-2026
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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

Physical Therapist

Taxonomy Code
225100000X
Type
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.
89381
License State
MA
Taxonomy Description
Physical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who have medical problems or other health-related conditions that limit their abilities to move and perform functional activities in their daily lives. PTs examine each individual and develop a plan using treatment techniques to promote the ability to move, reduce pain, restore function, and prevent disability. In addition, PTs work with individuals to prevent the loss of mobility before it occurs by developing fitness- and wellness-oriented programs for healthier and more active lifestyles. PTs:
  • Diagnose and manage movement dysfunction and enhance physical and functional abilities.
  • Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health.
  • Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries.
  • Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems.
  • Address the negative effects attributable to unique personal and environmental factors as they relate to human performance.
PTs provide care for people in a variety of settings, including hospitals, private practices, outpatient clinics, home health agencies, schools, sports and fitness facilities, work settings, and nursing homes. State licensure is required in each state in which a PT practices.

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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 1255274254, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).

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

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 4 + 7 + 8 + 2 + 1 + 0 + 24 = 56

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

The next multiple of ten after 56 is 60. The difference is the calculated check digit.

60 - 56 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1255274254.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Physical Therapist
54 HARVARD ST
BROOKLINE, MA 02445
Physical Therapist
54 HARVARD ST
BROOKLINE, MA 02445
Physical Therapist
54 HARVARD ST
BROOKLINE, MA 02445
Physical Therapist
54 HARVARD ST
BROOKLINE, MA 02445

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255274254, enumerated as an "individual" on April 13, 2026.

The provider is located at 54 HARVARD ST BROOKLINE, MA 02445 and the phone number is (617) 262-0030.

Physical Therapist with taxonomy code 225100000X.