DR. PATRIK LENNART JOHANSSON
NPI 1699834630
Internal Medicine in Washington, DC

NPI Status: Active since December 06, 2006

Contact Information

1310 SOUTHERN AVENUE
SUITE 200
WASHINGTON, DC
ZIP 20009
Phone: (202) 574-6837
Fax: (202) 574-7188

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NPPES record last updated: July 9, 2007. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Individual
  • Male
  • Internal Medicine

About PATRIK JOHANSSON

This page provides the complete NPI Profile along with additional information for Patrik Johansson, an internist established in Washington, District Of Columbia with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1699834630 assigned on December 2006. The practitioner's primary taxonomy code is 207R00000X with license number MD34110 (DC). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1699834630
Provider Name
DR. PATRIK LENNART JOHANSSON
Gender
Male
Entity Type
Individual
Location Address
1310 SOUTHERN AVENUE SUITE 200 WASHINGTON, DC 20009
Location Phone
(202) 574-6837
Location Fax
(202) 574-7188
Mailing Address
1736 COLUMBIA RD NW APT. 306 WASHINGTON, DC 20009
Mailing Phone
(202) 574-6837
Mailing Fax
(202) 574-7188
Is Sole Proprietor?
No
Enumeration Date
12-06-2006
Last Update Date
07-09-2007
Code Navigator

An internist like Patrik Johansson 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.

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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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
MD34110
License State
DC
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 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 1699834630, 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 80. The final step is to find the difference between that total and the next multiple of ten (80 - 80 = 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
1
Doubled → 2
Pos 2
6
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
9
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
3
Unchanged
Pos 7
4
Doubled → 8
Pos 8
6
Unchanged
Pos 9
3
Doubled → 6
Check
0
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 9 → 18 → 9 8 → 16 → 7 4 → 8 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 8 + 9 + 1 + 6 + 3 + 8 + 6 + 6 + 24 = 80

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

The next multiple of ten after 80 is 80. The difference is the calculated check digit.

80 - 80 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1699834630.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1699834630, enumerated as an "individual" on December 06, 2006.

The provider is located at 1310 SOUTHERN AVENUE SUITE 200 WASHINGTON, DC 20009 and the phone number is (202) 574-6837.

Internal Medicine with taxonomy code 207R00000X.