CHELSEA ROSE LACHANCE CADC
NPI 1902789845
Counselor - Addiction (Substance Use Disorder) in Saco, ME

NPI Status: Active since July 29, 2025

Contact Information

2 LEHNER RD
SACO, ME
ZIP 04072
Phone: (207) 300-2471
Fax: (207) 692-0222

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  • Individual
  • Female
  • Counselor
  • Addiction (Substance Use Disorder)

About CHELSEA LACHANCE

This page provides the complete NPI Profile along with additional information for Chelsea Lachance, a provider established in Saco, Maine with a medical specialization in Counselor, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1902789845 assigned on July 2025. The practitioner's primary taxonomy code is 101YA0400X with license number CAC9119 (ME). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1902789845
Provider Name
CHELSEA ROSE LACHANCE CADC
Gender
Female
Entity Type
Individual
Location Address
2 LEHNER RD SACO, ME 04072
Location Phone
(207) 300-2471
Location Fax
(207) 692-0222
Mailing Address
2 LEHNER RD SACO, ME 04072
Mailing Phone
(207) 300-2471
Mailing Fax
(207) 692-0222
Is Sole Proprietor?
No
Enumeration Date
07-29-2025
Last Update Date
07-29-2025
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A Substance Abuse or Addiction Counselor like Chelsea Lachance advices patients who experience alcoholism, drug addiction, eating disorders, mental health issues, or other mental or behavioral problems. Substance Abuse counselors provide treatment and support to help clients recover from addiction or modify problem behaviors. Many counselors incorporate the principles of 12-step programs, such as Alcoholics Anonymous (AA). They educate clients how to cope with stress and life’s issues in ways that help them recover. Counselors also help patients improve their personal relationships and find ways to discuss their addiction or other problems with family and friends.

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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 Addiction (Substance Use Disorder)

Taxonomy Code
101YA0400X
Type
Behavioral Health & Social Service Providers
License No.
CAC9119
License State
ME

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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 1902789845, 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 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
9
Unchanged
Pos 3
0
Doubled → 0
Pos 4
2
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
8
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
8
Unchanged
Pos 9
4
Doubled → 8
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 0 → 0 7 → 14 → 5 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 + 0 + 2 + 1 + 4 + 8 + 1 + 8 + 8 + 8 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1902789845.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Clinic/Center (Rehabilitation, Substance Use Disorder)
2 LEHNER RD
SACO, ME 04072
Registered Nurse
2 LEHNER RD
SACO, ME 04072
Counselor (Addiction (Substance Use Disorder))
2 LEHNER RD
SACO, ME 04072
Counselor (Addiction (Substance Use Disorder))
2 LEHNER RD
SACO, ME 04072
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
2 LEHNER RD
SACO, ME 04072
Registered Nurse
2 LEHNER RD
SACO, ME 04072
Licensed Practical Nurse
2 LEHNER RD
SACO, ME 04072

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1902789845, enumerated as an "individual" on July 29, 2025.

The provider is located at 2 LEHNER RD SACO, ME 04072 and the phone number is (207) 300-2471.

Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).