MARYELLEN FITZGERALD M.D.
NPI 1275654428
Internal Medicine in Boston, MA

NPI Status: Active since April 03, 2007

Contact Information

77 WARREN ST
BUILDING# 2, 3RD FLOOR
BOSTON, MA
ZIP 02135
Phone: (617) 782-6872

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  • Individual
  • Female
  • Internal Medicine

About MARYELLEN FITZGERALD

This page provides the complete NPI Profile along with additional information for Maryellen Fitzgerald, an internist established in Boston, Massachusetts with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1275654428 assigned on April 2007. The practitioner's primary taxonomy code is 207R00000X with license number 57873 (MA). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1275654428
Provider Name
MARYELLEN FITZGERALD M.D.
Gender
Female
Entity Type
Individual
Location Address
77 WARREN ST BUILDING# 2, 3RD FLOOR BOSTON, MA 02135
Location Phone
(617) 782-6872
Mailing Address
10 CARBERRY LN MILTON, MA 02186
Mailing Phone
(617) 782-6872
Is Sole Proprietor?
No
Enumeration Date
04-03-2007
Last Update Date
07-08-2007
Code Navigator

An internist like Maryellen Fitzgerald is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
57873
License State
MA
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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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 1275654428, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
7
Doubled → 14 → 1 + 4
Pos 4
5
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
5
Unchanged
Pos 7
4
Doubled → 8
Pos 8
4
Unchanged
Pos 9
2
Doubled → 4
Check
8
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 6 → 12 → 3 4 → 8 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 + 4 + 5 + 1 + 2 + 5 + 8 + 4 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1275654428.

Other Providers at the Same Location


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

Internal Medicine
77 WARREN ST
BRIGHTON, MA 02135
Internal Medicine
77 WARREN ST
BRIGHTON, MA 02135
Internal Medicine
77 WARREN ST
BRIGHTON, MA 02135
Social Worker (Clinical)
77 WARREN ST
BRIGHTON, MA 02135
Specialist
77 WARREN ST, ST. ELIZABETHS HEALTHCARE
BRIGHTON, MA 02135
Clinical Nurse Specialist (Psychiatric/Mental Health)
77 WARREN ST
BRIGHTON, MA 02135
Nurse Practitioner
77 WARREN ST
BRIGHTON, MA 02135
Psychologist (Clinical)
77 WARREN ST
BRIGHTON, MA 02135
Psychologist
77 WARREN ST
BRIGHTON, MA 02135
Social Worker (Clinical)
77 WARREN ST, BUILDING 2
BRIGHTON, MA 02135
Psychiatry & Neurology (Psychiatry)
77 WARREN ST, BLDG 2, 3RD FLOOR
BRIGHTON, MA 02135
Psychologist (Clinical)
77 WARREN ST, BRIGHTON MARINE CENTER SUITE 461
BRIGHTON, MA 02135
Psychiatry & Neurology (Psychiatry)
77 WARREN ST, BLDG 2, 3RD FLOOR
BRIGHTON, MA 02135
Social Worker (Clinical)
77 WARREN ST
BRIGHTON, MA 02135
Social Worker
77 WARREN ST, BUILDING 9
BRIGHTON, MA 02135
Speech-Language Pathologist
77 WARREN ST, BUILDING 4
BRIGHTON, MA 02135
Psychiatry & Neurology (Psychiatry)
77 WARREN ST, BUILDING #9 C HILDRENS COLLABORATIVE
BRIGHTON, MA 02135
Social Worker (Clinical)
77 WARREN ST, BUILDING #9
BRIGHTON, MA 02135
Social Worker (Clinical)
77 WARREN ST, BLDG #9
BRIGHTON, MA 02135
Specialist
77 WARREN ST, BUILDING #4
BRIGHTON, MA 02135

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1275654428, enumerated as an "individual" on April 03, 2007.

The provider is located at 77 WARREN ST BUILDING# 2, 3RD FLOOR BOSTON, MA 02135 and the phone number is (617) 782-6872.

Internal Medicine with taxonomy code 207R00000X.