CHRISTOPHER JAMES HOLT MD
NPI 1518115500
Psychiatry & Neurology - Addiction Psychiatry in Baltimore, MD

NPI Status: Active since September 03, 2008

Contact Information

701 W PRATT ST
BALTIMORE, MD
ZIP 21201
Phone: (800) 492-5538

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

Individual
Male
Psychiatry & Neurology
Addiction Psychiatry

About CHRISTOPHER HOLT

This page provides the complete NPI Profile along with additional information for Christopher Holt, a provider established in Baltimore, Maryland with a medical specialization in Psychiatry & Neurology, focusing in addiction psychiatry . The healthcare provider is registered in the NPI registry with number 1518115500 assigned on September 2008. The practitioner's primary taxonomy code is 2084P0802X with license number BG6838835 (DC). The provider is registered as an individual and his NPI record was last updated 16 years ago.

NPI: 1518115500
Provider Name: CHRISTOPHER JAMES HOLT MD
Gender: Male
Entity Type: Individual
Location Address: 701 W PRATT ST BALTIMORE, MD 21201
Location Phone: (800) 492-5538
Mailing Address: 3 CREST PARK CT SILVER SPRING, MD 20903
Mailing Phone: (202) 674-6845
Is Sole Proprietor?: Yes
Enumeration Date: 09-03-2008
Last Update Date: 06-30-2010
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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: Psychiatry & Neurology Addiction Psychiatry
Taxonomy Code: 2084P0802X
Type: Allopathic & Osteopathic Physicians
License No.: BG6838835
License State: DC
Taxonomy Description: Addiction Psychiatry is a subspecialty of psychiatry that focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.

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 1518115500, we treat the final digit (0) 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 0).

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 → 2

Pos 4

Unchanged

Pos 5

Doubled → 2

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 0

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 1 → 2 1 → 2 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 + 5 + 2 + 8 + 2 + 1 + 1 + 0 + 5 + 0 + 24 = 50

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

The next multiple of ten after 50 is 50. The difference is the calculated check digit.

50 - 50 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1518115500.