DR. THOMAS WILLIAM JOHNSTON III M.D.
NPI 1750550166
Internal Medicine in Louisville, KY

Q: What is Thomas Johnston's NPI number?

The NPI number for Thomas Johnston is 1750550166. It was assigned to this individual provider in the NPPES registry on February 29, 2008.

Q: What is Thomas Johnston's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Thomas Johnston was last updated on September 2, 2021. 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.

Active since February 29, 2008PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

200 E CHESTNUT ST, LOUISVILLE, KY 40202(502) 629-5552(502) 629-3132 Get Directions Write a Review

NPPES record last updated: September 2, 2021. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jan 21, 2021, Sep 28, 2020 (2 updates tracked since 2020).

On this page

About Dr. Thomas William Johnston Iii M.d. NPPES

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

DR. THOMAS WILLIAM JOHNSTON III M.D. (NPI 1750550166) is an individual internal medicine provider in Louisville, Kentucky, licensed in Kentucky (42922) and active in the NPI registry since February 2008. He is enrolled in Medicare PECOS, is affiliated with Norton Hospitals, Inc, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2007).

NPPES Registry Identity

NPI1750550166

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. THOMAS WILLIAM JOHNSTON IIICredential: M.D.

Location Address200 E CHESTNUT STLouisville, KY 40202-1831

Mailing AddressPo Box 776351Chicago, IL 60677-6351 · (502) 588-9490

Phone(502) 629-5552

Fax(502) 629-3132

Sole ProprietorNo

Medical School CMSLouisiana State University School Of Medicine In New OrleansGraduated 2007

Enumeration DateFebruary 29, 2008

Last NPPES UpdateSeptember 2, 20212 updates tracked since enumeration

NPPES CertifiedSeptember 2, 2021

✔ NPI 1750550166 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in KY · 42922

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedGeneral PracticeTaxonomy 208D00000X · License 42922 (KY)

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

200 E CHESTNUT ST, Louisville, KY 40202

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Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Thomas William Johnston Iii M.d. 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 ID1355484510

PECOS Enrollment IDI20100210000369

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.

Areas of Expertise CMS Part B claims

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

244 services236 patients

Hospital Affiliations CMS Care Compare

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

Norton Hospitals, Inc

Acute Care Hospitals · Louisville, KY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number180088

Location200 East Chestnut StreetLouisville, KY 40202 · Jefferson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 40202 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.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431

DME-Oxygen and Supplies · category DC000N

1 supplier12 claims12 services$10.98 avg. paid by Medicare

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390

DME-Oxygen and Supplies · category DC002N

1 supplier12 claims12 services$50.82 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

CATHERINE JARRETT PA-C

Physician Assistant (Medical)

200 E CHESTNUT ST, SUITE 303
LOUISVILLE, KY 40202

Jefferson County (502) 629-5552

BENJAMIN MARTIN CHOI SAMPEDRO C.R.N.A.

Nurse Anesthetist, Certified Registered

200 E CHESTNUT ST
LOUISVILLE, KY 40202

Jefferson County (214) 687-0001

KEVIN DANIEL MAHONEY APRN

Nurse Practitioner (Acute Care)

200 E CHESTNUT ST
LOUISVILLE, KY 40202

Jefferson County (502) 634-6767

ANN ADAMS FRASER CRNA

Nurse Anesthetist, Certified Registered

200 E CHESTNUT ST
LOUISVILLE, KY 40202

Jefferson County (502) 629-8000

NORTON HEALTHCARE

Pharmacy (Institutional Pharmacy)

200 E CHESTNUT ST
LOUISVILLE, KY 40202

Jefferson County (502) 629-7273

AARON NEAL SKINNER MD

Internal Medicine

200 E CHESTNUT ST, SUITE 303
LOUISVILLE, KY 40202

Jefferson County (502) 629-5552

DR. KEVIN ANTHONY MARQUES

Obstetrics & Gynecology

200 E CHESTNUT ST
LOUISVILLE, KY 40202

Jefferson County (502) 629-8000

SHAUN MADAHAR M.D.

Internal Medicine

200 E CHESTNUT ST, SERVICE BUILDING SUITE 303
LOUISVILLE, KY 40202

Jefferson County (502) 629-5552

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 Thomas Johnston's NPI number?

The NPI number for Thomas Johnston is 1750550166. It was assigned to this individual provider in the NPPES registry on February 29, 2008.

Where is Thomas Johnston located?

Thomas Johnston practices at 200 E Chestnut St, Louisville, KY 40202. The listed phone number is (502) 629-5552.

What is Thomas Johnston's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Thomas Johnston enrolled in Medicare?

Yes. Thomas Johnston 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.

What insurance does Thomas Johnston accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and CareSource list Thomas Johnston 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 Thomas Johnston affiliated with any hospitals?

According to CMS data, Thomas Johnston is affiliated with Norton Hospitals, Inc.

When was this NPI record last updated?

The NPPES record for Thomas Johnston was last updated on September 2, 2021. 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.