CONSTANCE MARIE BOYCE
NPI 1629930425
Counselor - Mental Health in Millsboro, DE

NPI Status: Active since December 01, 2025

Contact Information

117 MAIN ST UNIT 1
P.O. BOX 542
MILLSBORO, DE
ZIP 19966
Phone: (302) 249-3831
Fax: (302) 426-4631

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  • Individual
  • Female
  • Counselor
  • Mental Health

About CONSTANCE BOYCE

This page provides the complete NPI Profile along with additional information for Constance Boyce, a provider established in Millsboro, Delaware with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1629930425 assigned on December 2025. The practitioner's primary taxonomy code is 101YM0800X with license number PC-0011967 (DE). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1629930425
Provider Name
CONSTANCE MARIE BOYCE
Gender
Female
Entity Type
Individual
Location Address
117 MAIN ST UNIT 1 P.O. BOX 542 MILLSBORO, DE 19966
Location Phone
(302) 249-3831
Location Fax
(302) 426-4631
Mailing Address
30074 THOROGOODS RD DAGSBORO, DE 19939
Mailing Phone
(302) 249-3831
Is Sole Proprietor?
No
Enumeration Date
12-01-2025
Last Update Date
12-01-2025
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A mental health counselor like Constance Boyce provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
PC-0011967
License State
DE

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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 1629930425, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 4 + 9 + 1 + 8 + 3 + 0 + 4 + 4 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1629930425.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Community/Behavioral Health
117 MAIN ST UNIT 1
MILLSBORO, DE 19966
Social Worker (Clinical)
117 MAIN ST UNIT 1
MILLSBORO, DE 19966

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1629930425, enumerated as an "individual" on December 01, 2025.

The provider is located at 117 MAIN ST UNIT 1 P.O. BOX 542 MILLSBORO, DE 19966 and the phone number is (302) 249-3831.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.