EVERGREEN TREATMENT SERVICES LLC
NPI 1508792649
Clinic/Center - Adult Mental Health in Havre De Grace, MD

NPI Status: Active since June 18, 2026

Contact Information

2120 PULASKI HWY
HAVRE DE GRACE, MD
ZIP 21078
Phone: (410) 273-9300

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  • Organization
  • Clinic/Center
  • Adult Mental Health

About EVERGREEN TREATMENT SERVICES LLC

This page provides the complete NPI Profile along with additional information for Evergreen Treatment Services Llc, a provider established in Havre De Grace, Maryland operating as a Clinic/center, focusing in adult mental health . The healthcare provider is registered in the NPI registry with number 1508792649 assigned on June 2026. The practitioner's primary taxonomy code is 261QM0850X. The provider is registered as an organization and their NPI record was last updated June 2026. The authorized official of this NPI record is Erica Gater Csc-ad (Coowner)

NPI
1508792649
Provider Name
EVERGREEN TREATMENT SERVICES LLC
Entity Type
Organization
Location Address
2120 PULASKI HWY HAVRE DE GRACE, MD 21078
Location Phone
(410) 273-9300
Mailing Address
PO BOX 417 HAVRE DE GRACE, MD 21078
Mailing Phone
(410) 273-9300
Is Sole Proprietor?
No
Is Organization Subpart?
Yes
Enumeration Date
06-18-2026
Last Update Date
06-18-2026
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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 Adult Mental Health

Taxonomy Code
261QM0850X
Type
Ambulatory Health Care Facilities
Taxonomy Description
An entity, facility, or distinct part of a facility providing diagnostic, treatment, and prescriptive services related to mental and behavioral disorders in adults.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

ERICA GATER CSC-AD

Authorized Official Title
COOWNER
Authorized Official Phone
(410) 273-9300

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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 1508792649, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).

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
5
Unchanged
Pos 3
0
Doubled → 0
Pos 4
8
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
9
Unchanged
Pos 7
2
Doubled → 4
Pos 8
6
Unchanged
Pos 9
4
Doubled → 8
Check
9
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 2 → 4 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 0 + 8 + 1 + 4 + 9 + 4 + 6 + 8 + 24 = 71

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

The next multiple of ten after 71 is 80. The difference is the calculated check digit.

80 - 71 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1508792649.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Clinic/Center (Methadone)
2120 PULASKI HWY
HAVRE DE GRACE, MD 21078

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1508792649, enumerated as an "organization" on June 18, 2026.

The provider is located at 2120 PULASKI HWY HAVRE DE GRACE, MD 21078 and the phone number is (410) 273-9300.

Clinic/Center with taxonomy code 261QM0850X and a focus in Adult Mental Health.