LOUIE KOSTOPOULOS MD
NPI 1356431001
Internal Medicine - Interventional Cardiology in Milwaukee, WI

Q: What is Louie Kostopoulos's NPI number?

The NPI number for Louie Kostopoulos is 1356431001. It was assigned to this individual provider in the NPPES registry on October 13, 2006. The provider is also known as Louis Kostopoulos MD.

Q: What is Louie Kostopoulos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Q: When was this NPI record last updated?

The NPPES record for Louie Kostopoulos was last updated on August 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 October 13, 2006PECOS EnrolledAccepts Medicare Assignment

2801 W KINNICKINNIC RIVER PKWY, STE 840, MILWAUKEE, WI 53215(414) 649-3530 Get Directions Write a Review

NPPES record last updated: August 9, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 9, 2023, Dec 2, 2021, Aug 2, 2017 and 1 more (4 updates tracked since 2016).

On this page

About Louie Kostopoulos Md NPPES

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

LOUIE KOSTOPOULOS MD (NPI 1356431001) is an individual interventional cardiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (45636) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Aurora St Lukes Medical Center, and is a graduate of Other (2001).

NPPES Registry Identity

NPI1356431001

Entity TypeIndividualMale

Primary Taxonomy207RI0011X

Provider Legal NameLOUIE KOSTOPOULOSCredential: MD

Location Address2801 W KINNICKINNIC RIVER PKWY, STE 840Milwaukee, WI 53215-3669

Mailing AddressPo Box 735044Chicago, IL 60673-5044

Phone(414) 649-3530

Sole ProprietorNo

Medical School CMSOtherGraduated 2001

Enumeration DateOctober 13, 2006

Last NPPES UpdateAugust 9, 20234 updates tracked since enumeration

NPPES CertifiedAugust 9, 2023

✔ NPI 1356431001 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Interventional CardiologyAllopathic & Osteopathic Physicians

Taxonomy Code207RI0011X

License✔ Licensed in WI · 45636

Definition

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

2801 W KINNICKINNIC RIVER PKWY, Milwaukee, WI 53215

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Other Names 1

Other Name (5)Louis Kostopoulos Md

Other Identifiers 1

Medicaid34434000WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) 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

Louie Kostopoulos 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 ID1557262383

PECOS Enrollment IDI20040115000695

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 Reassignments

Medicare enrollment records show Louie Kostopoulos reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Aurora Health Care Metro, Inc.

0.1 mi

General Acute Care Hospital

2900 W OKLAHOMA AVE
Milwaukee, WI 53215

Reassigned Medicare billing, Wisconsin enrollment
297 clinicians in this Medicare group

NPI 1861447179 (414) 649-6000

Aurora Medical Group, Inc.

0.4 mi

Nurse Anesthetist, Certified Registered

3301 W FOREST HOME AVE
Milwaukee, WI 53215

Reassigned Medicare billing, Wisconsin enrollment
4,609 clinicians in this Medicare group

NPI 1427271378 (877) 576-3544

West Allis Memorial Hospital, Inc.

3.8 mi

Rehabilitation Unit

8901 W LINCOLN AVE
West Allis, WI 53227

Reassigned Medicare billing, Wisconsin enrollment
22 clinicians in this Medicare group

NPI 1376717785 (414) 389-6000

Lakeshore Medical Clinic, LLC

3.9 mi

Family Medicine

2000 E LAYTON AVE STE 100
Saint Francis, WI 53235

Reassigned Medicare billing, Wisconsin enrollment
960 clinicians in this Medicare group

NPI 1003861188 (414) 744-6589

Ascension Medical Group-Southeast Wisconsin Inc

6.0 mi

Anesthesiology

2301 N LAKE DR
Milwaukee, WI 53211

Reassigned Medicare billing, Wisconsin enrollment
1,343 clinicians in this Medicare group

NPI 1194473066 (414) 585-1000

Aurora Advanced Healthcare, Inc.

11 mi

Family Medicine

3003 W GOOD HOPE RD
Milwaukee, WI 53209

Reassigned Medicare billing, Wisconsin enrollment
1,615 clinicians in this Medicare group

NPI 1265629133 (414) 352-3100

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 24

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.

Injection, adenosine, 1 mg (not to be used to report any adenosine phosphate compounds) J0153

An adenosine injection is a quick-acting medication used to manage irregular heart rhythms. It works by slowing down the electrical activity in your heart, allowing it to return to its regular rhythm. This procedure is safe and typically performed under medical supervision.

1,110 services20 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.

350 services281 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

149 services149 patients

Heart muscle strain imaging 93356

Heart muscle strain imaging is a non-invasive test that uses sound waves to create pictures of your heart. It helps doctors evaluate how well your heart muscle is working and detect any damage or disease. This can aid in diagnosing heart conditions and guiding treatment plans.

141 services141 patients

Injection, perflutren lipid microspheres, per ml Q9957

Perflutren lipid microspheres injection, per ml, is a diagnostic tool used to enhance ultrasound images. It contains tiny gas-filled bubbles that improve the clarity of the images, aiding in a more accurate diagnosis.

132 services65 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.

116 services114 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

108 services27 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

84 services83 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

72 services62 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

63 services60 patients

Ultrasound of heart, follow-up 93308

A follow-up ultrasound of the heart, also known as an echocardiogram, is a non-invasive test that uses sound waves to create images of your heart. It helps doctors monitor your heart's function and structures after initial assessment or treatment.

61 services56 patients

Ultrasound of heart blood flow, valves and chambers, follow-up 93321

This procedure, an echocardiogram, uses sound waves to create images of your heart. It aids in assessing your heart's blood flow, chambers, and valves. It's a follow-up procedure, ensuring that your heart is functioning properly post-treatment.

59 services53 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

59 services53 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

56 services56 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

52 services52 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

34 services27 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

31 services31 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

29 services29 patients

Ultrasound evaluation of heart blood vessel or graft with review by radiologist, initial vessel 92978

This procedure involves using ultrasound technology to examine the first vessel of your heart or graft. A radiologist will review the images. It's a non-invasive way to check the health of your heart's blood vessels.

24 services23 patients

Injection of x-ray contrast during ultrasound of heart 93352

This procedure involves injecting a special dye into your bloodstream during a heart ultrasound. This dye, visible on X-rays, helps create clearer images of your heart's structure and function. It's safe and assists in diagnosing heart conditions accurately.

21 services21 patients

Insertion of tube in coronary artery for diagnosis with review by radiologist 93454

This procedure involves placing a small tube into your coronary artery. It helps to identify any blockages or issues within the artery. A radiologist, a doctor specialized in medical imaging, will review the results to ensure accurate diagnosis.

20 services20 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

19 services19 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

18 services18 patients

Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch 92928

This procedure involves placing a small, mesh tube (stent) in your coronary artery to keep it open. A balloon is used to expand the stent and artery, improving blood flow to your heart. It's typically done for a single artery or branch.

17 services14 patients

Hospital Affiliations CMS Care Compare 5

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

Aurora St Lukes Medical Center

Acute Care Hospitals · Milwaukee, WI

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520138

Location2900 W Oklahoma AveMilwaukee, WI 53215 · Milwaukee County

Emergency services Birthing friendly

West Allis Memorial Hospital

Acute Care Hospitals · West Allis, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520139

Location8901 W Lincoln AveWest Allis, WI 53227 · Milwaukee County

Emergency services Birthing friendly

Aurora Medical Center Kenosha

Acute Care Hospitals · Kenosha, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520189

Location10400 75th StKenosha, WI 53142 · Kenosha County

Emergency services Birthing friendly

Aurora Medical Ctr Oshkosh

Acute Care Hospitals · Oshkosh, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520198

Location855 N Westhaven DriveOshkosh, WI 54904 · Winnebago County

Emergency services Birthing friendly

Aurora Medical Center

Acute Care Hospitals · Grafton, WI

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520207

Location975 Port Washington RoadGrafton, WI 53024 · Ozaukee County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53215 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

$123.69 typical visit price

range $53.90 – $163.24

Typical copayment $30.92 (range $13.47 – $40.81)

Most-billed visit code 99204

Established Patient

$95.41 typical visit price

range $17.40 – $133.76

Typical copayment $23.85 (range $4.35 – $33.44)

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.

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.

CARRIE S BILICKI RN

Registered Nurse

2801 W KINNICKINNIC RIVER PKWY, STE 525
MILWAUKEE, WI 53215

Milwaukee County (414) 385-2630

BRIANNA CECELIA MURPHY PA-C

Physician Assistant

2801 W KINNICKINNIC RIVER PKWY
MILWAUKEE, WI 53215

Milwaukee County (414) 646-9820

DR. PAUL S BERNSTEIN

Internal Medicine (Cardiovascular Disease)

2801 W KINNICKINNIC RIVER PKWY, 840
MILWAUKEE, WI 53215

Milwaukee County (414) 649-3530

DR. PRAKASH D SHAH M.D.

Internal Medicine (Cardiovascular Disease)

2801 W KINNICKINNIC RIVER PKWY, STE 840
MILWAUKEE, WI 53215

Milwaukee County (414) 649-3530

M CHRISTINE GIEBEL PA-C

Physician Assistant

2801 W KINNICKINNIC RIVER PKWY, SUITE 345
MILWAUKEE, WI 53215

Milwaukee County (414) 385-2700

ROBERT A. DIULIO M.D.

Orthopaedic Surgery

2801 W KINNICKINNIC RIVER PKWY, SUITE 575
MILWAUKEE, WI 53215

Milwaukee County (414) 643-8800

CHRISTINE A KENYON LAUNDRE M.D.

Anesthesiology

2801 W KINNICKINNIC RIVER PKWY, SUITE 453
MILWAUKEE, WI 53215

Milwaukee County (414) 385-2380

JODI L ZILINSKI M.D.

Internal Medicine (Clinical Cardiac Electrophysiology)

2801 W KINNICKINNIC RIVER PKWY, SUITE 777
MILWAUKEE, WI 53215

Milwaukee County (414) 649-3390

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 Louie Kostopoulos's NPI number?

The NPI number for Louie Kostopoulos is 1356431001. It was assigned to this individual provider in the NPPES registry on October 13, 2006. The provider is also known as Louis Kostopoulos MD.

Where is Louie Kostopoulos located?

Louie Kostopoulos practices at 2801 W Kinnickinnic River Pkwy Ste 840, Milwaukee, WI 53215. The listed phone number is (414) 649-3530.

What is Louie Kostopoulos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.

Is Louie Kostopoulos enrolled in Medicare?

Yes. Louie Kostopoulos 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 organizations bill Medicare for Louie Kostopoulos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Louie Kostopoulos reassigns Medicare benefits to 6 organizations: Aurora Health Care Metro, Inc. (Milwaukee, WI), Aurora Medical Group, Inc. (Milwaukee, WI), West Allis Memorial Hospital, Inc. (West Allis, WI), Lakeshore Medical Clinic, LLC (Saint Francis, WI), Ascension Medical Group-Southeast Wisconsin Inc (Milwaukee, WI) and 1 more organization, listed in the Medicare section above. Each 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 Louie Kostopoulos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Louie Kostopoulos accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and Network Health and 2 other insurers list Louie Kostopoulos 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 Louie Kostopoulos affiliated with any hospitals?

According to CMS data, Louie Kostopoulos is affiliated with Aurora St Lukes Medical Center, West Allis Memorial Hospital, Aurora Medical Center Kenosha, Aurora Medical Ctr Oshkosh and Aurora Medical Center.

When was this NPI record last updated?

The NPPES record for Louie Kostopoulos was last updated on August 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.