THOMAS K SLACK M.D.
NPI 1023040565
Internal Medicine - Nephrology in Wellfleet, MA

NPI Status: Active since July 07, 2006

Contact Information

126 EASTWIND CIR
WELLFLEET, MA
ZIP 02667
Phone: (508) 349-0948

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  • Individual
  • Male
  • Internal Medicine
  • Nephrology

About THOMAS SLACK

This page provides the complete NPI Profile along with additional information for Thomas Slack, an internist established in Wellfleet, Massachusetts with a medical specialization in Internal Medicine, focusing in nephrology . The healthcare provider is registered in the NPI registry with number 1023040565 assigned on July 2006. The practitioner's primary taxonomy code is 207RN0300X with license number 212331 (MA). The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI
1023040565
Provider Name
THOMAS K SLACK M.D.
Gender
Male
Entity Type
Individual
Location Address
126 EASTWIND CIR WELLFLEET, MA 02667
Location Phone
(508) 349-0948
Mailing Address
126 EASTWIND CIR WELLFLEET, MA 02667
Mailing Phone
(508) 349-0948
Is Sole Proprietor?
No
Enumeration Date
07-07-2006
Last Update Date
11-24-2009
Code Navigator

An internist like Thomas Slack 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 Nephrology

Taxonomy Code
207RN0300X
Type
Allopathic & Osteopathic Physicians
License No.
212331
License State
MA
Taxonomy Description
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

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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 1023040565, 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 45. The final step is to find the difference between that total and the next multiple of ten (50 - 45 = 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
0
Unchanged
Pos 3
2
Doubled → 4
Pos 4
3
Unchanged
Pos 5
0
Doubled → 0
Pos 6
4
Unchanged
Pos 7
0
Doubled → 0
Pos 8
5
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
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 0 → 0 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 4 + 3 + 0 + 4 + 0 + 5 + 1 + 2 + 24 = 45

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

The next multiple of ten after 45 is 50. The difference is the calculated check digit.

50 - 45 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1023040565.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1023040565, enumerated as an "individual" on July 07, 2006.

The provider is located at 126 EASTWIND CIR WELLFLEET, MA 02667 and the phone number is (508) 349-0948.

Internal Medicine with taxonomy code 207RN0300X and a focus in Nephrology.