JOHN DAVID RYLL
NPI 1720354558
Residential Treatment Facility, Emotionally Disturbed Children in Plymouth, MA

NPI Status: Active since March 27, 2012

Contact Information

900 SHIP POND RD
PLYMOUTH, MA
ZIP 02360
Phone: (617) 686-7901

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

Individual
Male
Residential Treatment Facility, Emotiona...

About JOHN RYLL

This page provides the complete NPI Profile along with additional information for John Ryll, a provider established in Plymouth, Massachusetts with a medical specialization in Residential Treatment Facility, Emotionally Disturbed Children. The healthcare provider is registered in the NPI registry with number 1720354558 assigned on March 2012. The practitioner's primary taxonomy code is 322D00000X with license number 322D00000X (MA). The provider is registered as an individual and his NPI record was last updated 14 years ago.

NPI: 1720354558
Provider Name: JOHN DAVID RYLL
Gender: Male
Entity Type: Individual
Location Address: 900 SHIP POND RD PLYMOUTH, MA 02360
Location Phone: (617) 686-7901
Mailing Address: 900 SHIP POND RD PLYMOUTH, MA 02360
Mailing Phone: (617) 686-7901
Is Sole Proprietor?: Yes
Enumeration Date: 03-27-2012
Last Update Date: 03-27-2012
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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: Residential Treatment Facility, Emotionally Disturbed Children
Taxonomy Code: 322D00000X
Type: Residential Treatment Facilities
License No.: 322D00000X
License State: MA
Taxonomy Description: A residential facility that provides habilitation services and other care and treatment to children diagnosed with mental health illness, behavioral issues, and intellectual disabilities and are not able to live independently.

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 1720354558, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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 → 4

Pos 4

Unchanged

Pos 5

Doubled → 6

Pos 6

Unchanged

Pos 7

Doubled → 8

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 2 → 4 3 → 6 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 + 7 + 4 + 0 + 6 + 5 + 8 + 5 + 1 + 0 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1720354558.