DR. JOHN THOMAS SMALLWOOD M.D.
NPI 1477629491
Internal Medicine - Hematology & Oncology in Flossmoor, IL

NPI Status: Active since November 28, 2006

Contact Information

2448 BROOKWOOD DR
FLOSSMOOR, IL
ZIP 60422
Phone: (708) 957-3383
Fax: (708) 957-3348

Get Directions Write a Review

  • Individual
  • Male
  • Internal Medicine
  • Hematology & Oncology

About JOHN SMALLWOOD

This page provides the complete NPI Profile along with additional information for John Smallwood, an internist established in Flossmoor, Illinois with a medical specialization in Internal Medicine, focusing in hematology & oncology . The healthcare provider is registered in the NPI registry with number 1477629491 assigned on November 2006. The practitioner's primary taxonomy code is 207RH0003X. The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1477629491
Provider Name
DR. JOHN THOMAS SMALLWOOD M.D.
Gender
Male
Entity Type
Individual
Location Address
2448 BROOKWOOD DR FLOSSMOOR, IL 60422
Location Phone
(708) 957-3383
Location Fax
(708) 957-3348
Mailing Address
2448 BROOKWOOD DR FLOSSMOOR, IL 60422
Mailing Phone
(708) 957-3383
Mailing Fax
(708) 957-3348
Is Sole Proprietor?
Yes
Enumeration Date
11-28-2006
Last Update Date
07-08-2007
Code Navigator

An internist like John Smallwood 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 State
IL
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.

Reviews for DR. JOHN THOMAS SMALLWOOD M.D.

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 1477629491, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
7
Doubled → 14 → 1 + 4
Pos 4
7
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
1
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 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 4 + 7 + 1 + 2 + 2 + 1 + 8 + 4 + 1 + 8 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1477629491.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1477629491, enumerated as an "individual" on November 28, 2006.

The provider is located at 2448 BROOKWOOD DR FLOSSMOOR, IL 60422 and the phone number is (708) 957-3383.

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