DR. MARJORIE MCKNIGHT
NPI 1659430817
Pediatrics in Washington, DC

NPI Status: Active since December 06, 2006

Contact Information

106 IRVING ST NW
SUITE2300
WASHINGTON, DC
ZIP 20010
Phone: (202) 291-6257

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  • Individual
  • Female
  • Pediatrics
  • CLIA Number: 09D2263580
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 06-28-2026

About MARJORIE MCKNIGHT

This page provides the complete NPI Profile along with additional information for Marjorie Mcknight, a pediatrician established in Washington, District Of Columbia with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1659430817 assigned on December 2006. The practitioner's primary taxonomy code is 208000000X with license number MD16135 (DC). The provider is registered as an individual and her NPI record was last updated 19 years ago.

NPI
1659430817
Provider Name
DR. MARJORIE MCKNIGHT
Gender
Female
Entity Type
Individual
Location Address
106 IRVING ST NW SUITE2300 WASHINGTON, DC 20010
Location Phone
(202) 291-6257
Mailing Address
106 IRVING ST NW SUITE2300 WASHINGTON, DC 20010
Is Sole Proprietor?
Yes
Enumeration Date
12-06-2006
Last Update Date
07-08-2007
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A pediatrician like Marjorie Mcknight is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, 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

Pediatrics

Taxonomy Code
208000000X
Type
Allopathic & Osteopathic Physicians
License No.
MD16135
License State
DC
Taxonomy Description
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
09D2263580
Facility Type
Physician Office
Certificate Effective Date
June 29, 2024
Certificate Expiration Date
June 28, 2026
Laboratory Director
DR. MARJORIE B. MCKNIGHT
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Marjorie Mcknight to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1659430817, 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 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
6
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
9
Unchanged
Pos 5
4
Doubled → 8
Pos 6
3
Unchanged
Pos 7
0
Doubled → 0
Pos 8
8
Unchanged
Pos 9
1
Doubled → 2
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 5 → 10 → 1 4 → 8 0 → 0 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 0 + 9 + 8 + 3 + 0 + 8 + 2 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1659430817.

Other Providers at the Same Location


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

Ophthalmology
106 IRVING ST NW, SUITE 321
WASHINGTON, DC 20010
Internal Medicine
106 IRVING ST NW, SUITE 421-SOUTH
WASHINGTON, DC 20010
Internal Medicine (Cardiovascular Disease)
106 IRVING ST NW, SUITE 1500 NORTH TOWER
WASHINGTON, DC 20010
Midwife
106 IRVING ST NW, SUITE 4700 NORTH
WASHINGTON, DC 20010
Internal Medicine (Nephrology)
106 IRVING ST NW, STE 418
WASHINGTON, DC 20010
Surgery (Surgical Oncology)
106 IRVING ST NW, SUITE N-3900
WASHINGTON, DC 20010
Surgery (Surgical Oncology)
106 IRVING ST NW, SUITE N-3900
WASHINGTON, DC 20010
Internal Medicine (Nephrology)
106 IRVING ST NW, SUITE 418
WASHINGTON, DC 20010
Internal Medicine (Nephrology)
106 IRVING ST NW, SUITE 418
WASHINGTON, DC 20010
Internal Medicine (Gastroenterology)
106 IRVING ST NW, SUITE 2000
WASHINGTON, DC 20010
Specialist
106 IRVING ST NW, SUITE 4400 NORTH
WASHINGTON, DC 20010
Obstetrics & Gynecology
106 IRVING ST NW, SUITE 4400 NORTH
WASHINGTON, DC 20010
Podiatrist
106 IRVING ST NW, SUITE 402
WASHINGTON, DC 20010
Podiatrist
106 IRVING ST NW, SUITE 402
WASHINGTON, DC 20010
Internal Medicine
106 IRVING ST NW, 4200
WASHINGTON, DC 20010
Obstetrics & Gynecology
106 IRVING ST NW
WASHINGTON, DC 20010
Obstetrics & Gynecology (Maternal & Fetal Medicine)
106 IRVING ST NW, SUITE 3800N
WASHINGTON, DC 20010
Obstetrics & Gynecology
106 IRVING ST NW, SUITE 4400 NORTH
WASHINGTON, DC 20010
Surgery (Surgical Oncology)
106 IRVING ST NW, SUITE N-3900
WASHINGTON, DC 20010
Internal Medicine (Infectious Disease)
106 IRVING ST NW, SUITE NUMBER 208
WASHINGTON, DC 20010

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1659430817, enumerated as an "individual" on December 06, 2006.

The provider is located at 106 IRVING ST NW SUITE2300 WASHINGTON, DC 20010 and the phone number is (202) 291-6257.

Pediatrics with taxonomy code 208000000X.