LOUDOUN MEDICAL GROUP, PC
NPI 1164546529
Internal Medicine - Infectious Disease in Leesburg, VA

NPI Status: Active since March 19, 2007

Contact Information

44035 RIVERSIDE PARKWAY, SUITE 440
LEESBURG, VA
ZIP 20176
Phone: (703) 858-9966
Fax: (703) 858-9177

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  • Organization
  • Internal Medicine
  • Infectious Disease

About LOUDOUN MEDICAL GROUP, PC

This page provides the complete NPI Profile along with additional information for Loudoun Medical Group, Pc, an internist established in Leesburg, Virginia operating as a Internal Medicine, focusing in infectious disease . The healthcare provider is registered in the NPI registry with number 1164546529 assigned on March 2007. The practitioner's primary taxonomy code is 207RI0200X. The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The provider's . The authorized official of this NPI record is Mary Beth Tamasy (Ceo)

NPI
1164546529
Provider Legal Name
LOUDOUN MEDICAL GROUP, PC
Other Organization Name
Other Name Type
(6)
Entity Type
Organization
Location Address
44035 RIVERSIDE PARKWAY, SUITE 440 LEESBURG, VA 20176
Location Phone
(703) 858-9966
Location Fax
(703) 858-9177
Mailing Address
224D CORNWALL ST NW STE 403 LEESBURG, VA 20176
Mailing Phone
(703) 737-6001
Mailing Fax
(703) 858-9177
Is Sole Proprietor?
No
Is Organization Subpart?
Yes
Enumeration Date
03-19-2007
Last Update Date
11-20-2025
Code Navigator

An internist like Loudoun Medical Group, Pc 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

Secondary Locations

  • 4320 Seminary Rd
    Alexandria, VA 22304
    (703) 504-3000

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 Infectious Disease

Taxonomy Code
207RI0200X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

MARY BETH TAMASY

Authorized Official Title
CEO
Authorized Official Phone
(703) 737-6010

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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 1164546529, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
1
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
4
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
4
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
5
Unchanged
Pos 9
2
Doubled → 4
Check
9
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 6 → 12 → 3 5 → 10 → 1 6 → 12 → 3 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 2 + 4 + 1 + 0 + 4 + 1 + 2 + 5 + 4 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1164546529.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Internal Medicine
44035 RIVERSIDE PARKWAY, SUITE 440
LEESBURG, VA 20176

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1164546529, enumerated as an "organization" on March 19, 2007.

The provider is located at 44035 RIVERSIDE PARKWAY, SUITE 440 LEESBURG, VA 20176 and the phone number is (703) 858-9966.

Internal Medicine with taxonomy code 207RI0200X and a focus in Infectious Disease.