MS. CATHERINE MARIE MACDONALD NP
NPI 1295885390
Clinic/Center - Methadone in South Yarmouth, MA

NPI Status: Active since January 11, 2007

Contact Information

20 FORSYTHE AVE
SOUTH YARMOUTH, MA
ZIP 02664
Phone: (508) 398-5155
Fax: (508) 398-3478

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

Individual
Female
Clinic/Center
Methadone

About CATHERINE MACDONALD

This page provides the complete NPI Profile along with additional information for Catherine Macdonald, a provider established in South Yarmouth, Massachusetts with a medical specialization in Clinic/center, focusing in methadone . The healthcare provider is registered in the NPI registry with number 1295885390 assigned on January 2007. The practitioner's primary taxonomy code is 261QM2800X with license number 122825 (MA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI: 1295885390
Provider Name: MS. CATHERINE MARIE MACDONALD NP
Gender: Female
Entity Type: Individual
Location Address: 20 FORSYTHE AVE SOUTH YARMOUTH, MA 02664
Location Phone: (508) 398-5155
Location Fax: (508) 398-3478
Mailing Address: 30 SHEPHERDS PATH MARSHFIELD, MA 02050
Mailing Phone: (781) 834-6378
Is Sole Proprietor?: Yes
Enumeration Date: 01-11-2007
Last Update Date: 07-08-2007
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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: Clinic/Center Methadone
Taxonomy Code: 261QM2800X
Type: Ambulatory Health Care Facilities
License No.: 122825
License State: MA
Taxonomy Description: An entity, facility, or distinct part of a facility providing diagnostic, and replacement maintenance treatment services related to individuals with drug addiction.

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 1295885390, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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 → 16 → 1 + 6

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 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 8 → 16 → 7 5 → 10 → 1 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 8 + 5 + 1 + 6 + 8 + 1 + 0 + 3 + 1 + 8 + 24 = 70

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

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

70 - 70 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1295885390.