KATERINA SALLY MEASSICK DO
NPI 1699356642
Internal Medicine - Critical Care Medicine in Milwaukee, WI

NPI Status: Active since April 20, 2021

Contact Information

2901 W KINNICKINNIC RIVER PKWY STE 315
MILWAUKEE, WI
ZIP 53215
Phone: (414) 385-2592
Fax: (414) 385-2591

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

Individual
Female
Internal Medicine
Critical Care Medicine

About KATERINA MEASSICK

This page provides the complete NPI Profile along with additional information for Katerina Meassick, an internist established in Milwaukee, Wisconsin with a medical specialization in Internal Medicine, focusing in critical care medicine . The healthcare provider is registered in the NPI registry with number 1699356642 assigned on April 2021. The practitioner's primary taxonomy code is 207RC0200X with license number 8177221 (WI). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1699356642
Provider Name: KATERINA SALLY MEASSICK DO
Gender: Female
Entity Type: Individual
Location Address: 2901 W KINNICKINNIC RIVER PKWY STE 315 MILWAUKEE, WI 53215
Location Phone: (414) 385-2592
Location Fax: (414) 385-2591
Mailing Address: 2901 W KINNICKINNIC RIVER PKWY STE 315 MILWAUKEE, WI 53215
Mailing Phone: (414) 385-2592
Mailing Fax: (414) 385-2591
Is Sole Proprietor?: No
Enumeration Date: 04-20-2021
Last Update Date: 06-29-2025
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An internist like Katerina Meassick 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 Critical Care Medicine
Taxonomy Code: 207RC0200X
Type: Allopathic & Osteopathic Physicians
License No.: 8177221
License State: WI
Taxonomy Description: An internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.

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)
1	390200000X	Student, Health Care	Student in an Organized Health Care Education/Training Program

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 1699356642, we treat the final digit (2) 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 78. The final step is to find the difference between that total and the next multiple of ten (80 - 78 = 2).

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 → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 6

Pos 6

Unchanged

Pos 7

Doubled → 12 → 1 + 2

Pos 8

Unchanged

Pos 9

Doubled → 8

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 9 → 18 → 9 3 → 6 6 → 12 → 3 4 → 8

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 + 6 + 5 + 1 + 2 + 6 + 8 + 24 = 78

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

The next multiple of ten after 78 is 80. The difference is the calculated check digit.

80 - 78 = 2

This NPI is valid

The calculated check digit is 2, which matches the last digit of 1699356642.