CRAIG D. JOHNSON, M.D., P.A.
NPI 1255631909
Internal Medicine - Gastroenterology in Houston, TX

NPI Status: Active since October 28, 2010

Contact Information

6560 FANNIN ST
SUITE 1625
HOUSTON, TX
ZIP 77030
Phone: (713) 791-1800
Fax: (713) 791-1502

Get Directions Write a Review

  • Organization
  • Internal Medicine
  • Gastroenterology

About CRAIG D. JOHNSON, M.D., P.A.

This page provides the complete NPI Profile along with additional information for Craig D. Johnson, M.d., P.a., an internist established in Houston, Texas operating as a Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1255631909 assigned on October 2010. The practitioner's primary taxonomy code is 207RG0100X with license number D9191 (TX). The provider is registered as an organization and their NPI record was last updated 16 years ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Craig David Johnson M.d. (Owner)

NPI
1255631909
Provider Name
CRAIG D. JOHNSON, M.D., P.A.
Entity Type
Organization
Location Address
6560 FANNIN ST SUITE 1625 HOUSTON, TX 77030
Location Phone
(713) 791-1800
Location Fax
(713) 791-1502
Mailing Address
6560 FANNIN ST SUITE 1625 HOUSTON, TX 77030
Mailing Phone
(713) 791-1800
Mailing Fax
(713) 791-1502
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
10-28-2010
Last Update Date
10-28-2010
Code Navigator

An internist like Craig D. Johnson, M.d., P.a. 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.
D9191
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.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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.

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

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. CRAIG DAVID JOHNSON M.D.

Authorized Official Title
OWNER
Authorized Official Phone
(713) 791-1800

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
C17482MEDICARE UPIN (02)TX 
00N389MEDICARE PIN (08)TX 
064999501MEDICAID (05)TX 

Reviews for CRAIG D. JOHNSON, M.D., P.A.

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 1255631909, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
2
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
5
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
3
Unchanged
Pos 7
1
Doubled → 2
Pos 8
9
Unchanged
Pos 9
0
Doubled → 0
Check
9
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 6 → 12 → 3 1 → 2 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 0 + 5 + 1 + 2 + 3 + 2 + 9 + 0 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1255631909.

Other Providers at the Same Location


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

Psychiatry & Neurology (Psychiatry)
6560 FANNIN ST, STE 1616
HOUSTON, TX 77030
Internal Medicine (Nephrology)
6560 FANNIN ST, SUITE 1532
HOUSTON, TX 77030
Internal Medicine (Gastroenterology)
6560 FANNIN ST, STE 2000
HOUSTON, TX 77030
Obstetrics & Gynecology
6560 FANNIN ST, STE 1840
HOUSTON, TX 77030
Orthopaedic Surgery
6560 FANNIN ST, SUITE 1016
HOUSTON, TX 77030
Specialist
6560 FANNIN ST, SUITE 2020
HOUSTON, TX 77030
Physician Assistant (Surgical)
6560 FANNIN ST, STE 1402
HOUSTON, TX 77030
Neurological Surgery
6560 FANNIN ST, 1200
HOUSTON, TX 77030
Neurological Surgery
6560 FANNIN ST, SUITE 1200
HOUSTON, TX 77030
Internal Medicine
6560 FANNIN ST, SUITE 1112
HOUSTON, TX 77030
Neurological Surgery
6560 FANNIN ST, SUITE 1200
HOUSTON, TX 77030
Neurological Surgery
6560 FANNIN ST, SUITE 1200
HOUSTON, TX 77030
Urology
6560 FANNIN ST, SUITE 2030
HOUSTON, TX 77030
Urology
6560 FANNIN ST, STE 1270
HOUSTON, TX 77030
Registered Nurse (Otorhinolaryngology & Head-Neck)
6560 FANNIN ST, STE 704
HOUSTON, TX 77030
Plastic Surgery
6560 FANNIN ST, #1760
HOUSTON, TX 77030
Internal Medicine (Nephrology)
6560 FANNIN ST, SUITE 1532
HOUSTON, TX 77030
Ophthalmology
6560 FANNIN ST, SUITE 2200
HOUSTON, TX 77030
Internal Medicine (Nephrology)
6560 FANNIN ST, SUITE 2204
HOUSTON, TX 77030
Specialist
6560 FANNIN ST, SUITE 1008
HOUSTON, TX 77030

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1255631909, enumerated as an "organization" on October 28, 2010.

The provider is located at 6560 FANNIN ST SUITE 1625 HOUSTON, TX 77030 and the phone number is (713) 791-1800.

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

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