ROBERT G WALKER MD
NPI 1891009072
Internal Medicine - Gastroenterology in Durham, NC

NPI Status: Active since July 30, 2010

Contact Information

2100 ERWIN RD
DURHAM, NC
ZIP 27705
Phone: (919) 684-8111

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  • Individual
  • Male
  • Internal Medicine
  • Gastroenterology

About ROBERT WALKER

This page provides the complete NPI Profile along with additional information for Robert Walker, an internist established in Durham, North Carolina with a medical specialization in Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1891009072 assigned on July 2010. The practitioner's primary taxonomy code is 207RG0100X with license number 2010-00304 (NC). The provider is registered as an individual and his NPI record was last updated 16 years ago.

NPI
1891009072
Provider Name
ROBERT G WALKER MD
Gender
Male
Entity Type
Individual
Location Address
2100 ERWIN RD DURHAM, NC 27705
Location Phone
(919) 684-8111
Mailing Address
5213 S ALSTON AVE DURHAM, NC 27713
Mailing Phone
(919) 620-4918
Is Sole Proprietor?
No
Enumeration Date
07-30-2010
Last Update Date
07-30-2010
Code Navigator

An internist like Robert Walker 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.
2010-00304
License State
NC
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.

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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 1891009072, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
8
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
1
Unchanged
Pos 5
0
Doubled → 0
Pos 6
0
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
2
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 0 → 0 9 → 18 → 9 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 8 + 1 + 0 + 0 + 1 + 8 + 0 + 1 + 4 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1891009072.

Other Providers at the Same Location


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

Pediatrics
2100 ERWIN RD
DURHAM, NC 27705
Pediatrics (Pediatric Gastroenterology)
2100 ERWIN RD
DURHAM, NC 27705
Medical Genetics (Clinical Genetics (M.D.))
2100 ERWIN RD
DURHAM, NC 27705
Internal Medicine
2100 ERWIN RD
DURHAM, NC 27705
Radiology (Diagnostic Radiology)
2100 ERWIN RD
DURHAM, NC 27705
Physician Assistant
2100 ERWIN RD
DURHAM, NC 27705
Pediatrics (Neonatal-Perinatal Medicine)
2100 ERWIN RD
DURHAM, NC 27705
Anesthesiology
2100 ERWIN RD
DURHAM, NC 27705
Radiology (Radiation Oncology)
2100 ERWIN RD
DURHAM, NC 27705
Advanced Practice Midwife
2100 ERWIN RD
DURHAM, NC 27705
Radiology (Radiation Oncology)
2100 ERWIN RD
DURHAM, NC 27705
Anesthesiology
2100 ERWIN RD
DURHAM, NC 27705
Pediatrics
2100 ERWIN RD
DURHAM, NC 27705
Pediatrics (Pediatric Critical Care Medicine)
2100 ERWIN RD
DURHAM, NC 27705
Ophthalmology
2100 ERWIN RD
DURHAM, NC 27705
Pediatrics
2100 ERWIN RD
DURHAM, NC 27705
Surgery
2100 ERWIN RD
DURHAM, NC 27705
Pediatrics
2100 ERWIN RD
DURHAM, NC 27705
Pediatrics (Pediatric Endocrinology)
2100 ERWIN RD
DURHAM, NC 27705
Internal Medicine
2100 ERWIN RD
DURHAM, NC 27705

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1891009072, enumerated as an "individual" on July 30, 2010.

The provider is located at 2100 ERWIN RD DURHAM, NC 27705 and the phone number is (919) 684-8111.

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