DR. JOHN NKWACHUKWU ONYEMA M.D.,
NPI 1801855507
Internal Medicine in Las Vegas, NV

NPI Status: Active since March 21, 2006

Contact Information

4180 S RAINBOW BLVD
810
LAS VEGAS, NV
ZIP 89103
Phone: (702) 383-3626
Fax: (702) 383-7844

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  • Individual
  • Male
  • Internal Medicine

About JOHN ONYEMA

This page provides the complete NPI Profile along with additional information for John Onyema, an internist established in Las Vegas, Nevada with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1801855507 assigned on March 2006. The practitioner's primary taxonomy code is 207R00000X with license number 7397 (NV). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1801855507
Provider Name
DR. JOHN NKWACHUKWU ONYEMA M.D.,
Gender
Male
Entity Type
Individual
Location Address
4180 S RAINBOW BLVD 810 LAS VEGAS, NV 89103
Location Phone
(702) 383-3626
Location Fax
(702) 383-7844
Mailing Address
4180 S RAINBOW BLVD STE 810 LAS VEGAS, NV 89103
Mailing Phone
(702) 383-1910
Mailing Fax
(702) 383-7844
Is Sole Proprietor?
Yes
Enumeration Date
03-21-2006
Last Update Date
07-08-2007
Code Navigator

An internist like John Onyema 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.
7397
License State
NV
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.

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

This service was performed 52 times for 14 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 22 times for 18 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 134 times for 79 patients

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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 1801855507, we treat the final digit (7) 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 53. The final step is to find the difference between that total and the next multiple of ten (60 - 53 = 7).

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
0
Doubled → 0
Pos 4
1
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
5
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
5
Unchanged
Pos 9
0
Doubled → 0
Check
7
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 0 → 0 8 → 16 → 7 5 → 10 → 1 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 0 + 1 + 1 + 6 + 5 + 1 + 0 + 5 + 0 + 24 = 53

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

The next multiple of ten after 53 is 60. The difference is the calculated check digit.

60 - 53 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1801855507.

Other Providers at the Same Location


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

Internal Medicine
4180 S RAINBOW BLVD, SUITE810
LAS VEGAS, NV 89103
Pharmacy (Community/Retail Pharmacy)
4180 S RAINBOW BLVD, #808
LAS VEGAS, NV 89103
Internal Medicine
4180 S RAINBOW BLVD, STE 809
LAS VEGAS, NV 89103

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1801855507, enumerated as an "individual" on March 21, 2006.

The provider is located at 4180 S RAINBOW BLVD 810 LAS VEGAS, NV 89103 and the phone number is (702) 383-3626.

Internal Medicine with taxonomy code 207R00000X.