ANDREW RICHARD WIESEN M.D.
NPI 1104896836
Internal Medicine in Tacoma, WA

NPI Status: Active since January 25, 2006

Contact Information

MAMC
ATTN: MCHJ-PV (LTC WIESEN)
TACOMA, WA
ZIP 98431
Phone: (253) 968-4475

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  • Individual
  • Male
  • Internal Medicine

About ANDREW WIESEN

This page provides the complete NPI Profile along with additional information for Andrew Wiesen, an internist established in Tacoma, Washington with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1104896836 assigned on January 2006. The practitioner's primary taxonomy code is 207R00000X with license number 33777 (WI). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1104896836
Provider Name
ANDREW RICHARD WIESEN M.D.
Gender
Male
Entity Type
Individual
Location Address
MAMC ATTN: MCHJ-PV (LTC WIESEN) TACOMA, WA 98431
Location Phone
(253) 968-4475
Mailing Address
13501 152ND STREET CT E PUYALLUP, WA 98374
Mailing Phone
(253) 968-4475
Is Sole Proprietor?
Yes
Enumeration Date
01-25-2006
Last Update Date
09-11-2025
Code Navigator

An internist like Andrew Wiesen 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.
33777
License State
WI
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.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
12083P0901XAllopathic & Osteopathic Physicians

Preventive Medicine
Public Health & General Preventive Medicine

33777 (WI)

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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 1104896836, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
0
Doubled → 0
Pos 4
4
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
9
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
8
Unchanged
Pos 9
3
Doubled → 6
Check
6
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 0 → 0 8 → 16 → 7 6 → 12 → 3 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 0 + 4 + 1 + 6 + 9 + 1 + 2 + 8 + 6 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1104896836.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Specialist
MAMC
TACOMA, WA 98431
Student in an Organized Health Care Education/Training Program
MAMC
TACOMA, WA 98431
Optometrist
MAMC, OPTOMETRY
TACOMA, WA 98431

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104896836, enumerated as an "individual" on January 25, 2006.

The provider is located at MAMC ATTN: MCHJ-PV (LTC WIESEN) TACOMA, WA 98431 and the phone number is (253) 968-4475.

Internal Medicine with taxonomy code 207R00000X.