DR. MICHAEL JOSEPH SHALLCROSS MD
NPI 1962965624
Internal Medicine - Critical Care Medicine in Milwaukee, WI

NPI Status: Active since April 10, 2019

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
Secondary Locations
Medicare Participation & PECOS Status
Physician Visit Costs
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Internal Medicine
Critical Care Medicine
PECOS Enrolled

About MICHAEL SHALLCROSS

This page provides the complete NPI Profile along with additional information for Michael Shallcross, 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 1962965624 assigned on April 2019. The practitioner's primary taxonomy code is 207RC0200X with license number 85628-20 (WI). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1962965624
Provider Name: DR. MICHAEL JOSEPH SHALLCROSS MD
Gender: Male
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: 615 E CORCORAN AVE UNIT 241 MILWAUKEE, WI 53202
Mailing Phone: (703) 851-3647
Is Sole Proprietor?: No
Enumeration Date: 04-10-2019
Last Update Date: 06-30-2025
Code Navigator

An internist like Michael Shallcross 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

6311 Richmond Hwy
Alexandria, VA 22306
(703) 647-6087
10510 Jefferson Ave Ste A
Newport News, VA 23601
(757) 594-3800

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.: 85628-20
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	207P00000X	Allopathic & Osteopathic Physicians	Emergency Medicine	85628-20 (WI)
2	207Q00000X	Allopathic & Osteopathic Physicians	Family Medicine	0101272972 (VA)
3	390200000X	Student, Health Care	Student in an Organized Health Care Education/Training Program

Medicare Participation & PECOS Enrollment Status

Michael Shallcross is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes

Physician Visit Costs

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 53215 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

Average New Patient Price $123.69
Minimum New Patient Price $53.9
Maximum New Patient Price $163.24

Average New Patient Copayment $30.92
Minimum New Patient Copayment $13.47
Maximum New Patient Copayment $40.81

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

Average Established Patient Price $95.41
Minimum Established Patient Price $17.4
Maximum Established Patient Price $133.76

Average Established Patient Copayment $23.85
Minimum Established Patient Copayment $4.35
Maximum Established Patient Copayment $33.44

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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 1962965624, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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 → 12 → 1 + 2

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 4

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 6 → 12 → 3 9 → 18 → 9 5 → 10 → 1 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 2 + 2 + 1 + 8 + 6 + 1 + 0 + 6 + 4 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1962965624.