DR. ROBERT GEOFFREY NELSON MD, PHD
NPI 1447589478
Internal Medicine in Phoenix, AZ

NPI Status: Active since December 22, 2009

Contact Information

1550 E INDIAN SCHOOL RD
PHOENIX, AZ
ZIP 85014
Phone: (602) 200-5205
Fax: (602) 200-5225

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  • Individual
  • Male
  • Internal Medicine

About ROBERT NELSON

This page provides the complete NPI Profile along with additional information for Robert Nelson, an internist established in Phoenix, Arizona with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1447589478 assigned on December 2009. The practitioner's primary taxonomy code is 207R00000X with license number 15217 (AZ). The provider is registered as an individual and his NPI record was last updated 16 years ago.

NPI
1447589478
Provider Name
DR. ROBERT GEOFFREY NELSON MD, PHD
Gender
Male
Entity Type
Individual
Location Address
1550 E INDIAN SCHOOL RD PHOENIX, AZ 85014
Location Phone
(602) 200-5205
Location Fax
(602) 200-5225
Mailing Address
1550 E INDIAN SCHOOL RD PHOENIX, AZ 85014
Mailing Phone
(602) 200-5205
Mailing Fax
(602) 200-5225
Is Sole Proprietor?
No
Enumeration Date
12-22-2009
Last Update Date
12-22-2009
Code Navigator

An internist like Robert Nelson 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

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
15217
License State
AZ
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

G43266 (CA)

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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 1447589478, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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
4
Doubled → 8
Pos 4
7
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
8
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
4
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
8
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 4 → 8 5 → 10 → 1 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 + 4 + 8 + 7 + 1 + 0 + 8 + 1 + 8 + 4 + 1 + 4 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1447589478.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Nurse Practitioner (Family)
1550 E INDIAN SCHOOL RD
PHOENIX, AZ 85014
Preventive Medicine (Public Health & General Preventive Medicine)
1550 E INDIAN SCHOOL RD
PHOENIX, AZ 85014

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1447589478, enumerated as an "individual" on December 22, 2009.

The provider is located at 1550 E INDIAN SCHOOL RD PHOENIX, AZ 85014 and the phone number is (602) 200-5205.

Internal Medicine with taxonomy code 207R00000X.