DR. MARC NELSON MD
NPI 1922628593
Emergency Medicine in Baltimore, MD

NPI Status: Active since April 23, 2020

Contact Information

400 E PRATT ST FL 8
BALTIMORE, MD
ZIP 21202
Phone: (443) 726-2551

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Emergency Medicine

About MARC NELSON

This page provides the complete NPI Profile along with additional information for Marc Nelson, a provider established in Baltimore, Maryland with a medical specialization in Emergency Medicine. The healthcare provider is registered in the NPI registry with number 1922628593 assigned on April 2020. The practitioner's primary taxonomy code is 207P00000X with license number D20353 (MD). The provider is registered as an individual and his NPI record was last updated 6 years ago.

NPI: 1922628593
Provider Name: DR. MARC NELSON MD
Other Name: DR. MARCUS NELSON MD
Other Name Type: Other Name (5)
Gender: Male
Entity Type: Individual
Location Address: 400 E PRATT ST FL 8 BALTIMORE, MD 21202
Location Phone: (443) 726-2551
Mailing Address: 4409 FALLS BRIDGE DR APT E BALTIMORE, MD 21211
Mailing Phone: (443) 726-2551
Is Sole Proprietor?: No
Enumeration Date: 04-23-2020
Last Update Date: 04-23-2020
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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: Emergency Medicine
Taxonomy Code: 207P00000X
Type: Allopathic & Osteopathic Physicians
License No.: D20353
License State: MD
Taxonomy Description: An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

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 1922628593, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 4

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

Check

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 2 → 4 6 → 12 → 3 8 → 16 → 7 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 4 + 2 + 1 + 2 + 2 + 1 + 6 + 5 + 1 + 8 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1922628593.