ALYSSA DAVIS, LICSW, LLC
NPI 1871274365
Clinic/Center - Adult Mental Health in Yarmouth Port, MA

NPI Status: Active since July 27, 2023

Contact Information

923 ROUTE 6A
YARMOUTH PORT, MA
ZIP 02675
Phone: (508) 859-0330

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NPPES record last updated: July 27, 2023. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Organization
  • Clinic/Center
  • Adult Mental Health

About ALYSSA DAVIS, LICSW, LLC

This page provides the complete NPI Profile along with additional information for Alyssa Davis, Licsw, Llc, a provider established in Yarmouth Port, Massachusetts operating as a Clinic/center, focusing in adult mental health . The healthcare provider is registered in the NPI registry with number 1871274365 assigned on July 2023. The practitioner's primary taxonomy code is 261QM0850X. The provider is registered as an organization and their NPI record was last updated 3 years ago. The authorized official of this NPI record is Alyssa Davis Licsw (Ceo)

NPI
1871274365
Provider Name
ALYSSA DAVIS, LICSW, LLC
Entity Type
Organization
Location Address
923 ROUTE 6A YARMOUTH PORT, MA 02675
Location Phone
(508) 859-0330
Mailing Address
923 ROUTE 6A YARMOUTH PORT, MA 02675
Mailing Phone
(508) 859-0330
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
07-27-2023
Last Update Date
07-27-2023
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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

ALYSSA DAVIS LICSW

Authorized Official Title
CEO
Authorized Official Phone
(508) 859-0330

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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 1871274365, 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
8
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
1
Unchanged
Pos 5
2
Doubled → 4
Pos 6
7
Unchanged
Pos 7
4
Doubled → 8
Pos 8
3
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 7 → 14 → 5 2 → 4 4 → 8 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 4 + 1 + 4 + 7 + 8 + 3 + 1 + 2 + 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 1871274365.

Other Providers at the Same Location


The following 12 providers are registered at the same or a nearby location.

Internal Medicine
923 ROUTE 6A
YARMOUTHPORT, MA 02675
Social Worker (Clinical)
923 ROUTE 6A, UNIT T
YARMOUTH PORT, MA 02675
Counselor (Mental Health)
923 ROUTE 6A, SUITE T
YARMOUTH PORT, MA 02675
Marriage & Family Therapist
923 ROUTE 6A, BUILDING 7, 2ND FLOOR
YARMOUTH PORT, MA 02675
Social Worker (Clinical)
923 ROUTE 6A, SUITE T
YARMOUTH PORT, MA 02675
Nurse Practitioner (Adult Health)
923 ROUTE 6A, BUILDING 7 APEX HEALTH
YARMOUTHPORT, MA 02675
Occupational Therapist (Pediatrics)
923 ROUTE 6A
YARMOUTH PORT, MA 02675
Psychiatry & Neurology (Psychiatry)
923 ROUTE 6A, UNIT W
YARMOUTH PORT, MA 02675
Psychiatry & Neurology (Psychiatry)
923 ROUTE 6A, SUNFLOWER MKT PLC UNIT N
YARMOUTH PORT, MA 02675
Community/Behavioral Health
923 ROUTE 6A
YARMOUTH PORT, MA 02675
Chiropractor
923 ROUTE 6A, UNIT Y
YARMOUTH PORT, MA 02675
Psychologist (Cognitive & Behavioral)
923 ROUTE 6A, BUILDING 7, 2ND FLOOR
YARMOUTH PORT, MA 02675

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1871274365, enumerated as an "organization" on July 27, 2023.

The provider is located at 923 ROUTE 6A YARMOUTH PORT, MA 02675 and the phone number is (508) 859-0330.

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