DR. HARRY LOUIS LEIDER M.D.
NPI 1437446358
Internal Medicine in Baltimore, MD

NPI Status: Active since June 29, 2011

Contact Information

300 E LOMBARD ST
SUITE 1610
BALTIMORE, MD
ZIP 21202
Phone: (443) 769-1613
Fax: (443) 220-0122

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  • Individual
  • Male
  • Internal Medicine

About HARRY LEIDER

This page provides the complete NPI Profile along with additional information for Harry Leider, an internist established in Baltimore, Maryland with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1437446358 assigned on June 2011. The practitioner's primary taxonomy code is 207R00000X with license number D0062311 (MD). The provider is registered as an individual and his NPI record was last updated 15 years ago.

NPI
1437446358
Provider Name
DR. HARRY LOUIS LEIDER M.D.
Gender
Male
Entity Type
Individual
Location Address
300 E LOMBARD ST SUITE 1610 BALTIMORE, MD 21202
Location Phone
(443) 769-1613
Location Fax
(443) 220-0122
Mailing Address
300 E LOMBARD ST SUITE 1610 BALTIMORE, MD 21202
Mailing Phone
(443) 769-1613
Mailing Fax
(443) 220-0122
Is Sole Proprietor?
Yes
Enumeration Date
06-29-2011
Last Update Date
06-29-2011
Code Navigator

An internist like Harry Leider 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.
D0062311
License State
MD
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.

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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 1437446358, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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
3
Doubled → 6
Pos 4
7
Unchanged
Pos 5
4
Doubled → 8
Pos 6
4
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
3
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
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 3 → 6 4 → 8 6 → 12 → 3 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 6 + 7 + 8 + 4 + 1 + 2 + 3 + 1 + 0 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1437446358.

Other Providers at the Same Location


The following 5 providers are registered at the same or a nearby location.

Durable Medical Equipment & Medical Supplies
300 E LOMBARD ST, SUITE 840
BALTIMORE, MD 21202
Internal Medicine
300 E LOMBARD ST
BALTIMORE, MD 21202
Counselor (Mental Health)
300 E LOMBARD ST
BALTIMORE, MD 21202
Community/Behavioral Health
300 E LOMBARD ST, SUITE 840 OFFICES 806, 809, 816, 817
BALTIMORE, MD 21202
Community/Behavioral Health
300 E LOMBARD ST, SUITE 840 OFFICES 806, 809, 816, 817
BALTIMORE, MD 21202

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1437446358, enumerated as an "individual" on June 29, 2011.

The provider is located at 300 E LOMBARD ST SUITE 1610 BALTIMORE, MD 21202 and the phone number is (443) 769-1613.

Internal Medicine with taxonomy code 207R00000X.