DR. BRETT CASSIDY MD
NPI 1255126520
Pathology - Anatomic Pathology & Clinical Pathology in Boston, MA

NPI Status: Active since April 09, 2025

Contact Information

75 FRANCIS STREET
AMORY BUILDING, 360H
BOSTON, MA
ZIP 02115
Phone: (617) 732-7510

Get Directions Write a Review

  • Individual
  • Male
  • Pathology
  • Anatomic Pathology & Clinical Pathology

About BRETT CASSIDY

This page provides the complete NPI Profile along with additional information for Brett Cassidy, a provider established in Boston, Massachusetts with a medical specialization in Pathology, focusing in anatomic pathology & clinical pathology . The healthcare provider is registered in the NPI registry with number 1255126520 assigned on April 2025. The practitioner's primary taxonomy code is 207ZP0102X with license number 3018209 (MA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1255126520
Provider Name
DR. BRETT CASSIDY MD
Gender
Male
Entity Type
Individual
Location Address
75 FRANCIS STREET AMORY BUILDING, 360H BOSTON, MA 02115
Location Phone
(617) 732-7510
Mailing Address
75 FRANCIS ST AMORY BUILDING, 360H BOSTON, MA 02115
Is Sole Proprietor?
No
Enumeration Date
04-09-2025
Last Update Date
04-09-2025
Code Navigator

Location Map

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

Pathology Anatomic Pathology & Clinical Pathology

Taxonomy Code
207ZP0102X
Type
Allopathic & Osteopathic Physicians
License No.
3018209
License State
MA
Taxonomy Description
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

Reviews for DR. BRETT CASSIDY MD

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1255126520, we treat the final digit (0) 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 0).

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
2
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
5
Unchanged
Pos 5
1
Doubled → 2
Pos 6
2
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
5
Unchanged
Pos 9
2
Doubled → 4
Check
0
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 5 → 10 → 1 1 → 2 6 → 12 → 3 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 2 + 2 + 1 + 2 + 5 + 4 + 24 = 50

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

The next multiple of ten after 50 is 50. The difference is the calculated check digit.

50 - 50 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1255126520.

Other Providers at the Same Location


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

Internal Medicine (Cardiovascular Disease)
75 FRANCIS STREET
BOSTON, MA 02115
Radiology (Diagnostic Radiology)
75 FRANCIS STREET, RADIOLOGY BRIGHAM & WOMENS HOSPITAL
BOSTON, MA 02115
Pathology (Anatomic Pathology)
75 FRANCIS STREET, BRIGHAM & WOMEN'S HOSPITAL
BOSTON, MA 02115
Internal Medicine (Infectious Disease)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL DIVISION OF INFECTIOUS DISE
BOSTON, MA 02115
Pathology (Anatomic Pathology)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL DEPARTMENT OF PATHOLOGY
BOSTON, MA 02115
Internal Medicine
75 FRANCIS STREET, BRIGHAM INTERNAL MEDICINE ASSOCIATES
BOSTON, MA 02115
Neurological Surgery
75 FRANCIS STREET, BRIGHAM AND WOMEN'S HOSPITAL DEPARTMENT OF NEUROSURGERY
BOSTON, MA 02115
Obstetrics & Gynecology (Reproductive Endocrinology)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL CENTER FOR REPRODUCTIVE MED
BOSTON, MA 02115
Psychiatry & Neurology (Psychiatry)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL DEPARTMENT OF PSYCHIATRY
BOSTON, MA 02115
Psychiatry & Neurology (Psychiatry)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL DEPT OF PSYCHIATRY
BOSTON, MA 02115
Surgery (Vascular Surgery)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL
BOSTON, MA 02115
Pathology (Clinical Pathology/Laboratory Medicine)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL CLINICAL LABS
BOSTON, MA 02115
Emergency Medicine
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL DEPT OF EMERGENCY MEDICINE
BOSTON, MA 02115
Internal Medicine
75 FRANCIS STREET, BRIGHAM INTERNAL MEDICINE ASSOCIATES
BOSTON, MA 02115
Emergency Medicine
75 FRANCIS STREET, BRIGHAM AND WOMEN'S HOSPITAL DEPARTMENT OF EMERGENCY
BOSTON, MA 02115
Internal Medicine (Nephrology)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL RENAL DIVISION
BOSTON, MA 02115
Anesthesiology
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL DEPARTMENT OF ANESTHESIA
BOSTON, MA 02115
Internal Medicine
75 FRANCIS STREET, BRIGHAM INTERNAL MEDICINE ASSOCIATES
BOSTON, MA 02115
Internal Medicine
75 FRANCIS STREET, BRIGHAM INTERNAL MEDICINE ASSOCIATES
BOSTON, MA 02115
Obstetrics & Gynecology (Gynecologic Oncology)
75 FRANCIS STREET, BRIGHAM AND WOMENS HOSPITAL DIVISION OF GYNECOLOGIC ONC
BOSTON, MA 02115

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255126520, enumerated as an "individual" on April 09, 2025.

The provider is located at 75 FRANCIS STREET AMORY BUILDING, 360H BOSTON, MA 02115 and the phone number is (617) 732-7510.

Pathology with taxonomy code 207ZP0102X and a focus in Anatomic Pathology & Clinical Pathology.