HERCARE GYNECOLOGY PLLC
NPI 1750227591
Obstetrics & Gynecology in Warrenville, IL

NPI Status: Active since April 24, 2026

Contact Information

28369 DAVIS PKWY STE 403
WARRENVILLE, IL
ZIP 60555
Phone: (630) 556-8941
Fax: (773) 903-4793

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  • Organization
  • Obstetrics & Gynecology

About HERCARE GYNECOLOGY PLLC

This page provides the complete NPI Profile along with additional information for Hercare Gynecology Pllc, a women's health care provider established in Warrenville, Illinois operating as a Obstetrics & Gynecology. The healthcare provider is registered in the NPI registry with number 1750227591 assigned on April 2026. The practitioner's primary taxonomy code is 207V00000X. The provider is registered as an organization and their NPI record was last updated April 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Teressa Lynn Alexander Md (Member)

NPI
1750227591
Provider Name
HERCARE GYNECOLOGY PLLC
Entity Type
Organization
Location Address
28369 DAVIS PKWY STE 403 WARRENVILLE, IL 60555
Location Phone
(630) 556-8941
Location Fax
(773) 903-4793
Mailing Address
28369 DAVIS PKWY STE 403 WARRENVILLE, IL 60555
Mailing Phone
(630) 556-8941
Mailing Fax
(773) 903-4793
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-24-2026
Last Update Date
04-24-2026
Code Navigator

Women's health care providers like Hercare Gynecology Pllc treat and diagnose diseases and conditions that affect a woman's physical and emotional health. Women's health professionals come from a variety of different specialties, including obstetrician/gynecologists, general surgeons, perinatologists, physician assistants, nurse practitioners or nurse midwives. A women's health provider might help you with family planning, breast care, pregnancy and child birth, osteoporosis, menopause, heart disease, 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

Obstetrics & Gynecology

Taxonomy Code
207V00000X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

TERESSA LYNN ALEXANDER MD

Authorized Official Title
MEMBER
Authorized Official Phone
(630) 556-8941

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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 1750227591, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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
7
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
0
Unchanged
Pos 5
2
Doubled → 4
Pos 6
2
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
5
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
1
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 5 → 10 → 1 2 → 4 7 → 14 → 5 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 0 + 0 + 4 + 2 + 1 + 4 + 5 + 1 + 8 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1750227591.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Durable Medical Equipment & Medical Supplies
28369 DAVIS PKWY STE 403
WARRENVILLE, IL 60555

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1750227591, enumerated as an "organization" on April 24, 2026.

The provider is located at 28369 DAVIS PKWY STE 403 WARRENVILLE, IL 60555 and the phone number is (630) 556-8941.

Obstetrics & Gynecology with taxonomy code 207V00000X.