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

HALLEY STEWART GC
NPI 1114846987
Genetic Counselor, MS in Louisville, KY

Active since July 14, 2026
411 E CHESTNUT ST, LEVEL 2, LOUISVILLE, KY 40202(502) 588-0850 Get Directions

NPPES record added: July 14, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Female
  • Genetic Counselor, MS

About HALLEY STEWART

This page provides the complete NPI Profile along with additional information for Halley Stewart, a provider established in Louisville, Kentucky with a medical specialization in Genetic Counselor, Ms. The healthcare provider is registered in the NPI registry with number 1114846987 assigned on July 2026. The practitioner's primary taxonomy code is 170300000X with license number TGC092 (KY). The provider is registered as an individual and her NPI record was last updated July 2026.

NPI
1114846987
Provider Name
HALLEY STEWART GC
Gender
Female
Entity Type
Individual
Location Address
411 E CHESTNUT ST LEVEL 2 LOUISVILLE, KY 40202
Location Phone
(502) 588-0850
Mailing Address
411 E CHESTNUT ST LEVEL 2 LOUISVILLE, KY 40202
Mailing Phone
(502) 588-0850
Is Sole Proprietor?
No
Enumeration Date
07-14-2026
Last Update Date
07-14-2026
Code Navigator

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

Genetic Counselor, MS

Taxonomy Code
170300000X
Type
Other Service Providers
License No.
TGC092
License State
KY
Taxonomy Description
A masters trained health care provider who collects and interprets genetic family histories; assesses the risk of disease occurrence or recurrence; identifies interventions to manage or ameliorate disease risk; educates about inheritance, testing, management, prevention, ethical issues, resources, and research; and counsels to promote informed choices and adaptation. Certification was established in 1993 by the American Board of Genetic Counseling and prior to that by the American Board of Medical Genetics. Requirements for experience, licensure, and job responsibilities vary among the states.

Reviews for HALLEY STEWART GC

There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.

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 1114846987, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 2 + 4 + 1 + 6 + 4 + 1 + 2 + 9 + 1 + 6 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1114846987.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Physician Assistant
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Psychologist (Clinical Child & Adolescent)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Psychologist (Clinical Child & Adolescent)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Medical Genetics (Clinical Genetics (M.D.))
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Psychologist (Clinical)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Surgery (Pediatric Surgery)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Pediatrics (Pediatric Infectious Diseases)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Pediatrics (Pediatric Nephrology)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Dietitian, Registered
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Social Worker (Clinical)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Pediatrics (Pediatric Endocrinology)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Social Worker (Clinical)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Dietitian, Registered (Nutrition, Metabolic)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Genetic Counselor, MS
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Social Worker (Clinical)
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Genetic Counselor, MS
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Speech-Language Pathologist
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Genetic Counselor, MS
411 E CHESTNUT ST
LOUISVILLE, KY 40202
Social Worker (Clinical)
411 E CHESTNUT ST, LEVEL 6
LOUISVILLE, KY 40202
Psychologist (Clinical Child & Adolescent)
411 E CHESTNUT ST
LOUISVILLE, KY 40202

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1114846987, enumerated as an "individual" on July 14, 2026.

The provider is located at 411 E CHESTNUT ST LEVEL 2 LOUISVILLE, KY 40202 and the phone number is (502) 588-0850.

Genetic Counselor, MS with taxonomy code 170300000X.