GREGORY IVAN BERK MD
NPI 1306208905
Internal Medicine - Hematology & Oncology in Dover, MA

NPI Status: Active since March 23, 2016

Contact Information

133 CLAYBROOK RD
DOVER, MA
ZIP 02030
Phone: (925) 719-3531

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  • Individual
  • Male
  • Internal Medicine
  • Hematology & Oncology

About GREGORY BERK

This page provides the complete NPI Profile along with additional information for Gregory Berk, an internist established in Dover, Massachusetts with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1306208905 assigned on March 2016. The practitioner's primary taxonomy code is 207RH0003X with license number C51814 (CA). The provider is registered as an individual and his NPI record was last updated 10 years ago.

NPI
1306208905
Provider Name
GREGORY IVAN BERK MD
Gender
Male
Entity Type
Individual
Location Address
133 CLAYBROOK RD DOVER, MA 02030
Location Phone
(925) 719-3531
Mailing Address
133 CLAYBROOK RD DOVER, MA 02030
Mailing Phone
(925) 719-3531
Is Sole Proprietor?
Yes
Enumeration Date
03-23-2016
Last Update Date
03-23-2016
Code Navigator

An internist like Gregory Berk 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 Hematology & Oncology

Taxonomy Code
207RH0003X
Type
Allopathic & Osteopathic Physicians
License No.
C51814
License State
CA
Taxonomy Description
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

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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 1306208905, 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
3
Unchanged
Pos 3
0
Doubled → 0
Pos 4
6
Unchanged
Pos 5
2
Doubled → 4
Pos 6
0
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
9
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 0 → 0 2 → 4 8 → 16 → 7 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 0 + 6 + 4 + 0 + 1 + 6 + 9 + 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 1306208905.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1306208905, enumerated as an "individual" on March 23, 2016.

The provider is located at 133 CLAYBROOK RD DOVER, MA 02030 and the phone number is (925) 719-3531.

Internal Medicine with taxonomy code 207RH0003X and a focus in Hematology & Oncology.