DR. DONALD R JOHNSON M.D.
NPI 1790745990
Internal Medicine - Gastroenterology in Fort Worth, TX

NPI Status: Active since March 23, 2006

Contact Information

1111 5TH AVE
FORT WORTH, TX
ZIP 76104
Phone: (817) 877-0888
Fax: (817) 877-5039

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  • Individual
  • Male
  • Internal Medicine
  • Gastroenterology

About DONALD JOHNSON

This page provides the complete NPI Profile along with additional information for Donald Johnson, an internist established in Fort Worth, Texas with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1790745990 assigned on March 2006. The practitioner's primary taxonomy code is 207RG0100X with license number G5938 (TX). The provider is registered as an individual and his NPI record was last updated 16 years ago.

NPI
1790745990
Provider Name
DR. DONALD R JOHNSON M.D.
Gender
Male
Entity Type
Individual
Location Address
1111 5TH AVE FORT WORTH, TX 76104
Location Phone
(817) 877-0888
Location Fax
(817) 877-5039
Mailing Address
7610 STEMMONS FWY SUITE 500 DALLAS, TX 75247
Mailing Phone
(214) 689-5960
Mailing Fax
(817) 877-5039
Is Sole Proprietor?
No
Enumeration Date
03-23-2006
Last Update Date
05-26-2010
Code Navigator

An internist like Donald Johnson 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 Gastroenterology

Taxonomy Code
207RG0100X
Type
Allopathic & Osteopathic Physicians
License No.
G5938
License State
TX
Taxonomy Description
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
100010870MEDICARE PIN (08)TX 
84Y113OTHER (01)TXBCBSTX
114077401MEDICAID (05)TX 
84Y113MEDICARE PIN (08)TX 
E18167MEDICARE UPIN (02)TX 

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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 1790745990, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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
7
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
0
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
4
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
9
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
0
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 9 → 18 → 9 7 → 14 → 5 5 → 10 → 1 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 8 + 0 + 1 + 4 + 4 + 1 + 0 + 9 + 1 + 8 + 24 = 70

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

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

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1790745990.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Internal Medicine (Gastroenterology)
1111 5TH AVE
FORT WORTH, TX 76104
Internal Medicine (Gastroenterology)
1111 5TH AVE
FORT WORTH, TX 76104
Clinic/Center (Health Service)
1111 5TH AVE
FORT WORTH, TX 76104

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1790745990, enumerated as an "individual" on March 23, 2006.

The provider is located at 1111 5TH AVE FORT WORTH, TX 76104 and the phone number is (817) 877-0888.

Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.

The provider might be accepting Accepts: Medicare, Medicaid and Blue Cross Blue Shield. Please consult your insurance carrier or call the provider to verify.