DR. LINUS TSAI M.D., PH.D.
NPI 1457519605
Internal Medicine - Endocrinology, Diabetes & Metabolism in Boston, MA

NPI Status: Active since May 23, 2008

Contact Information

330 BROOKLINE AVE
BOSTON, MA
ZIP 02215
Phone: (617) 667-9600

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  • Individual
  • Male
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism

About LINUS TSAI

This page provides the complete NPI Profile along with additional information for Linus Tsai, an internist established in Boston, Massachusetts with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1457519605 assigned on May 2008. The practitioner's primary taxonomy code is 207RE0101X with license number 228733 (MA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1457519605
Provider Name
DR. LINUS TSAI M.D., PH.D.
Gender
Male
Entity Type
Individual
Location Address
330 BROOKLINE AVE BOSTON, MA 02215
Location Phone
(617) 667-9600
Mailing Address
330 BROOKLINE AVE BOSTON, MA 02215
Is Sole Proprietor?
Yes
Enumeration Date
05-23-2008
Last Update Date
05-23-2008
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An internist like Linus Tsai 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 Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License No.
228733
License State
MA
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

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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 1457519605, 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 55. The final step is to find the difference between that total and the next multiple of ten (60 - 55 = 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
4
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
7
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
1
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
6
Unchanged
Pos 9
0
Doubled → 0
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 5 → 10 → 1 5 → 10 → 1 9 → 18 → 9 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 0 + 7 + 1 + 0 + 1 + 1 + 8 + 6 + 0 + 24 = 55

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

The next multiple of ten after 55 is 60. The difference is the calculated check digit.

60 - 55 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1457519605.

Other Providers at the Same Location


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

Obstetrics & Gynecology (Maternal & Fetal Medicine)
330 BROOKLINE AVE, KS 306
BOSTON, MA 02215
Internal Medicine (Cardiovascular Disease)
330 BROOKLINE AVE
BOSTON, MA 02215
Anesthesiology
330 BROOKLINE AVE, DEPT OF ANESTHESIA ST-308
BOSTON, MA 02215
Internal Medicine (Critical Care Medicine)
330 BROOKLINE AVE, GZ 405
BOSTON, MA 02215
Radiology (Radiation Oncology)
330 BROOKLINE AVE, FINARD BUILDING B25
BOSTON, MA 02215
Psychiatry & Neurology (Neurology)
330 BROOKLINE AVE
BOSTON, MA 02215
Pathology (Neuropathology)
330 BROOKLINE AVE, DEPT. OF NEUROLOGY
BOSTON, MA 02215
Internal Medicine (Cardiovascular Disease)
330 BROOKLINE AVE
BOSTON, MA 02215
Internal Medicine (Geriatric Medicine)
330 BROOKLINE AVE
BOSTON, MA 02215
Hospitalist
330 BROOKLINE AVE
BOSTON, MA 02215
Internal Medicine
330 BROOKLINE AVE
BOSTON, MA 02215
Internal Medicine (Pulmonary Disease)
330 BROOKLINE AVE, GZ-402
BOSTON, MA 02215
Internal Medicine (Pulmonary Disease)
330 BROOKLINE AVE, KSB23, BIDMC PULMONARY
BOSTON, MA 02215
Pathology (Anatomic Pathology)
330 BROOKLINE AVE, DEPT OF MEDICINE
BOSTON, MA 02215
Pediatrics (Neonatal-Perinatal Medicine)
330 BROOKLINE AVE, ROSE BUILDING ROOM 318
BOSTON, MA 02215
Internal Medicine (Gastroenterology)
330 BROOKLINE AVE
BOSTON, MA 02215
Internal Medicine
330 BROOKLINE AVE, SHAPIRO 6
BOSTON, MA 02215
Internal Medicine (Pulmonary Disease)
330 BROOKLINE AVE, BETH ISRAEL DEACONESS MEDICAL CENTER
BOSTON, MA 02215
Internal Medicine (Infectious Disease)
330 BROOKLINE AVE, RESEARCH EAST 113 BETH ISRAEL DEACONESS HOSPITAL
BOSTON, MA 02215
Orthopaedic Surgery
330 BROOKLINE AVE, BIDMC - STONEMAN 10
BOSTON, MA 02215

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1457519605, enumerated as an "individual" on May 23, 2008.

The provider is located at 330 BROOKLINE AVE BOSTON, MA 02215 and the phone number is (617) 667-9600.

Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.