MISS ALYSSA DIEFENDERFER DPT
NPI 1992059943
Physical Therapist - Orthopedic in Royersford, PA

NPI Status: Active since October 30, 2012

Contact Information

341 10TH AVE
SUITE 101
ROYERSFORD, PA
ZIP 19468
Phone: (610) 792-8100
Fax: (610) 792-1535

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Physical Therapist
Orthopedic

About ALYSSA DIEFENDERFER

This page provides the complete NPI Profile along with additional information for Alyssa Diefenderfer, a provider established in Royersford, Pennsylvania with a medical specialization in Physical Therapist, focusing in orthopedic . The healthcare provider is registered in the NPI registry with number 1992059943 assigned on October 2012. The practitioner's primary taxonomy code is 2251X0800X with license number PT022250 (PA). The provider is registered as an individual and her NPI record was last updated 10 years ago.

NPI: 1992059943
Provider Name: MISS ALYSSA DIEFENDERFER DPT
Other Name: MISS ALYSSA LEDDY DPT
Other Name Type: Former Name (1)
Gender: Female
Entity Type: Individual
Location Address: 341 10TH AVE SUITE 101 ROYERSFORD, PA 19468
Location Phone: (610) 792-8100
Location Fax: (610) 792-1535
Mailing Address: 120 W GERMANTOWN PIKE SUITE 100 PLYMOUTH MEETING, PA 19462
Mailing Phone: (610) 270-0370
Mailing Fax: (610) 792-1535
Is Sole Proprietor?: No
Enumeration Date: 10-30-2012
Last Update Date: 06-02-2016
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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 Orthopedic
Taxonomy Code: 2251X0800X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.: PT022250
License State: PA
Taxonomy Description: A licensed physical therapist, including but not limited to an individual who is a Board Certified Specialist in Orthopaedic Physical Therapy, who has demonstrated specialized knowledge and skill in human anatomy and physiology, movement science; pathology/pathophysiology, pain science, medical and surgical considerations, orthopaedic physical therapy theory and practice, and critical inquiry for evidence-based practice.

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 1992059943, we treat the final digit (3) 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 3).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

Pos 8

Unchanged

Pos 9

Doubled → 8

Check

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 9 → 18 → 9 0 → 0 9 → 18 → 9 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 0 + 5 + 1 + 8 + 9 + 8 + 24 = 77

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

The next multiple of ten after 77 is 80. The difference is the calculated check digit.

80 - 77 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1992059943.