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DR. STEPHEN KASTOR OVERSTREET MD
NPI 1811995624
Internal Medicine - Gastroenterology in Louisville, KY

Active since July 14, 2005PECOS EnrolledAccepts Medicare Assignment
95.5/100
CMS Quality Rating
4001 KRESGE WAY, STE 134, LOUISVILLE, KY 40207(502) 895-0882(502) 895-1354 Get Directions Write a Review

NPPES record last updated: December 7, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Stephen Kastor Overstreet Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. STEPHEN KASTOR OVERSTREET MD (NPI 1811995624) is an individual gastroenterology provider in Louisville, Kentucky, licensed in Kentucky (27421) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS, is affiliated with Baptist Health Louisville, and is a graduate of University Of Louisville School Of Medicine (1989).

NPPES Registry Identity

NPI1811995624
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameDR. STEPHEN KASTOR OVERSTREETCredential: MD
Location Address4001 KRESGE WAY, STE 134Louisville, KY 40207-4640
Mailing Address4001 Kresge Way, Ste 134Louisville, KY 40207-4640 · (502) 895-0882 · Fax (502) 895-1354
Phone(502) 895-0882
Fax(502) 895-1354
Sole ProprietorYes
Medical School CMSUniversity Of Louisville School Of MedicineGraduated 1989
Enumeration DateJuly 14, 2005
Last NPPES UpdateDecember 7, 2020
NPPES CertifiedDecember 7, 2020
✔ NPI 1811995624 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in KY · 27421
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
4001 KRESGE WAY, Louisville, KY 40207
Open in Google Maps ↗

Other Identifiers 1

Medicaid64274210KY

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter of Tennessee and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Stephen Kastor Overstreet Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1557405719
PECOS Enrollment IDI20100225000719
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Stephen Overstreet reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Baptist Health Medical Group Inc
Same address
Internal Medicine
4003 KRESGE WAY, SUITE 410
Louisville, KY 40207
  • Reassigned Medicare billing, Kentucky enrollment
  • 1,441 clinicians in this Medicare group
NPI 1336572601 (502) 893-7462

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Biopsy of large bowel using a flexible endoscope 45380
A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.
222 services222 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
198 services133 patients
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239
This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.
115 services113 patients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385
This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.
71 services69 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
46 services44 patients
Colorectal cancer screening; colonoscopy on individual at high risk G0105
Colorectal cancer screening, specifically a colonoscopy, is a preventive measure for those at high risk. A thin, flexible tube with a camera inspects the colon to spot any abnormal growths. This test helps detect potential issues early, enhancing the effectiveness of treatment.
45 services45 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Baptist Health Louisville

Acute Care Hospitals · Louisville, KY
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number180130
Location4000 Kresge WayLouisville, KY 40207 · Jefferson County
Emergency services Birthing friendly

Baptist Health Lagrange

Acute Care Hospitals · La Grange, KY
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number180138
Location1025 New Moody LaneLa Grange, KY 40031 · Oldham County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 40207 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.77 typical visit price
range $52.76 – $162.27
Typical copayment $30.69 (range $13.19 – $40.56)
Most-billed visit code 99204
Established Patient
$93.94 typical visit price
range $16.53 – $131.99
Typical copayment $23.48 (range $4.13 – $32.99)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

95.5/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality89.59
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

WYGAL & NEWMAN LLC
Specialist
4001 KRESGE WAY, SUITE 324
LOUISVILLE, KY 40207
Jefferson County (502) 894-4408
JANET L HONCHELL MD
Obstetrics & Gynecology
4001 KRESGE WAY, SUITE 324
LOUISVILLE, KY 40207
Jefferson County (502) 894-4408
DR. ANDREW D. BAILEY M.D.
Internal Medicine (Gastroenterology)
4001 KRESGE WAY, SUITE 130
LOUISVILLE, KY 40207
Jefferson County (502) 896-8447
DR. REID B BROWN M.D.
Orthopaedic Surgery
4001 KRESGE WAY, SUITE 100
LOUISVILLE, KY 40207
Jefferson County (502) 897-6579
ANDREW D BAILEY MD
Internal Medicine (Gastroenterology)
4001 KRESGE WAY, SUITE 130
LOUISVILLE, KY 40207
Jefferson County (502) 896-8447
JOHN M WEETER MD
Surgery (Plastic and Reconstructive Surgery)
4001 KRESGE WAY, STE 220
LOUISVILLE, KY 40207
Jefferson County (502) 895-5466
MRS. ELLEN JEAN JOFFE PA-C
Physician Assistant (Surgical)
4001 KRESGE WAY, SUITE 200
LOUISVILLE, KY 40207
Jefferson County (502) 895-1995
ORTHOPAEDIC SPECIALISTS PLLC
Specialist
4001 KRESGE WAY, SUITE 330
LOUISVILLE, KY 40207
Jefferson County (502) 212-2663

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Stephen Overstreet's NPI number?

The NPI number for Stephen Overstreet is 1811995624. It was assigned to this individual provider in the NPPES registry on July 14, 2005.

Where is Stephen Overstreet located?

Stephen Overstreet practices at 4001 Kresge Way Ste 134, Louisville, KY 40207. The listed phone number is (502) 895-0882.

What is Stephen Overstreet's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Stephen Overstreet enrolled in Medicare?

Yes. Stephen Overstreet is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Stephen Overstreet's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Overstreet reassigns Medicare benefits to Baptist Health Medical Group Inc (Louisville, KY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Stephen Overstreet's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Stephen Overstreet accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter of Tennessee, Anthem Blue Cross and Blue Shield and CareSource list Stephen Overstreet as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Stephen Overstreet affiliated with any hospitals?

According to CMS data, Stephen Overstreet is affiliated with Baptist Health Louisville and Baptist Health Lagrange.

When was this NPI record last updated?

The NPPES record for Stephen Overstreet was last updated on December 7, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.