Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

JAMES H. DVORAK
NPI 1588583694
Counselor - Mental Health in Sun Prairie, WI

Active since July 13, 2026
131 CLARMAR DR, SUN PRAIRIE, WI 53590(414) 517-7050 Get Directions Write a Review

NPPES record added: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Male
  • Counselor
  • Mental Health

About JAMES DVORAK

This page provides the complete NPI Profile along with additional information for James Dvorak, a provider established in Sun Prairie, Wisconsin with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1588583694 assigned on July 2026. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1588583694
Provider Name
JAMES H. DVORAK
Gender
Male
Entity Type
Individual
Location Address
131 CLARMAR DR SUN PRAIRIE, WI 53590
Location Phone
(414) 517-7050
Mailing Address
3526 HAWTHORN HILL DR WAUKESHA, WI 53188
Is Sole Proprietor?
No
Enumeration Date
07-13-2026
Last Update Date
07-13-2026
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A mental health counselor like James Dvorak provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License State
WI

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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 1588583694, 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 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 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
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
8
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
8
Unchanged
Pos 7
3
Doubled → 6
Pos 8
6
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
4
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 8 → 16 → 7 5 → 10 → 1 3 → 6 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 6 + 8 + 1 + 0 + 8 + 6 + 6 + 1 + 8 + 24 = 76

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

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1588583694.

Other Providers at the Same Location


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

Counselor (Addiction (Substance Use Disorder))
131 CLARMAR DR
SUN PRAIRIE, WI 53590
Substance Abuse Rehabilitation Facility
131 CLARMAR DR
SUN PRAIRIE, WI 53590
Counselor (Addiction (Substance Use Disorder))
131 CLARMAR DR
SUN PRAIRIE, WI 53590

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1588583694, enumerated as an "individual" on July 13, 2026.

The provider is located at 131 CLARMAR DR SUN PRAIRIE, WI 53590 and the phone number is (414) 517-7050.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.