ALEXYS KATHERINE FONSECA
NPI 1821932575
Student in an Organized Health Care Education/Training Program in Weymouth, MA

NPI Status: Active since April 15, 2026

Contact Information

55 FOGG RD
WEYMOUTH, MA
ZIP 02190
Phone: (508) 789-3484

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  • Individual
  • Female
  • Student in an Organized Health Care Educ...

About ALEXYS FONSECA

This page provides the complete NPI Profile along with additional information for Alexys Fonseca, a primary care provider established in Weymouth, Massachusetts with a medical specialization in Student In An Organized Health Care Education/training Program. The healthcare provider is registered in the NPI registry with number 1821932575 assigned on April 2026. The practitioner's primary taxonomy code is 390200000X. The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1821932575
Provider Name
ALEXYS KATHERINE FONSECA
Gender
Female
Entity Type
Individual
Location Address
55 FOGG RD WEYMOUTH, MA 02190
Location Phone
(508) 789-3484
Mailing Address
34 MORNINGSIDE AVE ACUSHNET, MA 02743
Mailing Phone
(508) 789-3484
Is Sole Proprietor?
No
Enumeration Date
04-15-2026
Last Update Date
04-15-2026
Code Navigator

A primary care provider (PCP) like Alexys Fonseca sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc .

Location Map

Secondary Locations

  • 101 Page St
    New Bedford, MA 02740
    (508) 997-1515
  • 2014 Washington St
    Newton, MA 02462
    (617) 243-6000
  • 15 Roche Bros Way Ste 200
    North Easton, MA 02356
    (781) 344-3535
  • 777 S Douglas Rd
    Pembroke Pines, FL 33025
    (954) 282-9220
  • 876 Broadway
    Raynham, MA 02767
    (508) 824-9500
  • 226 Field St
    New Bedford, MA 02740
    (508) 979-5557
  • 104 Quarry St # 2
    Quincy, MA 02169
    (617) 472-6764
  • 830 Oak St Ste 102W
    Brockton, MA 02301
    (508) 897-4790

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

Student in an Organized Health Care Education/Training Program

Taxonomy Code
390200000X
Type
Student, Health Care
License State
MA
Taxonomy Description
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

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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 1821932575, 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
2
Doubled → 4
Pos 4
1
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
2
Doubled → 4
Pos 8
5
Unchanged
Pos 9
7
Doubled → 14 → 1 + 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 2 → 4 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 4 + 1 + 1 + 8 + 3 + 4 + 5 + 1 + 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 1821932575.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Surgery (Plastic and Reconstructive Surgery)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Surgery (Plastic and Reconstructive Surgery)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Internal Medicine (Endocrinology, Diabetes & Metabolism)
55 FOGG RD
WEYMOUTH, MA 02190
Psychiatry & Neurology (Neurology)
55 FOGG RD, DEPARTMENT OF NEUROLOGY
SOUTH WEYMOUTH, MA 02190
Anesthesiology
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Anesthesiology
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Emergency Medicine (Emergency Medical Services)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Internal Medicine (Cardiovascular Disease)
55 FOGG RD, CARDIOVASCULAR CENTER AT SOUTH SHORE HOSPITAL
S WEYMOUTH, MA 02190
Pediatrics (Neonatal-Perinatal Medicine)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Radiology (Diagnostic Radiology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Radiology (Diagnostic Radiology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Radiology (Diagnostic Radiology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Radiology (Diagnostic Radiology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Radiology (Diagnostic Radiology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Radiology (Diagnostic Radiology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Radiology (Diagnostic Radiology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Internal Medicine
55 FOGG RD, HOSPITALIST PROGRAM
SOUTH WEYMOUTH, MA 02190
Internal Medicine
55 FOGG RD
WEYMOUTH, MA 02190
Pathology (Anatomic Pathology & Clinical Pathology)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190
Nurse Practitioner (Adult Health)
55 FOGG RD
SOUTH WEYMOUTH, MA 02190

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821932575, enumerated as an "individual" on April 15, 2026.

The provider is located at 55 FOGG RD WEYMOUTH, MA 02190 and the phone number is (508) 789-3484.

Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.