DR. MARC W GERDISCH MD
NPI 1508822255
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Indianapolis, IN

Q: What is Marc Gerdisch's NPI number?

The NPI number for Marc Gerdisch is 1508822255. It was assigned to this individual provider in the NPPES registry on April 21, 2006.

Q: What is Marc Gerdisch's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Q: When was this NPI record last updated?

The NPPES record for Marc Gerdisch was last updated on April 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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 April 21, 2006PECOS EnrolledAccepts Medicare Assignment

1701 N SENATE BLVD, INDIANAPOLIS, IN 46202(317) 962-3256 Get Directions Write a Review

NPPES record last updated: April 2, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 2, 2026, Jun 17, 2024, May 12, 2021 and 3 more (6 updates tracked since 2020).

On this page

About Dr. Marc W Gerdisch Md NPPES

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

DR. MARC W GERDISCH MD (NPI 1508822255) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Indianapolis, Indiana, licensed in Indiana (01048049A) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Indiana University Health, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1508822255

Entity TypeIndividualMale

Primary Taxonomy208G00000X

Provider Legal NameDR. MARC W GERDISCHCredential: MD

Location Address1701 N SENATE BLVDIndianapolis, IN 46202-1239

Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959

Phone(317) 962-3256

Sole ProprietorNo

Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 1987

Enumeration DateApril 21, 2006

Last NPPES UpdateApril 2, 20266 updates tracked since enumeration

NPPES CertifiedApril 2, 2026

✔ NPI 1508822255 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians

Taxonomy Code208G00000X

Licenses✔ Licensed in IN · 01048049A✔ Licensed in IL · 036079121

Definition

A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.

1701 N SENATE BLVD, Indianapolis, IN 46202

Open in Google Maps ↗

Secondary Practice Locations 2

Location 18051 S Emerson Ave Ste 365Indianapolis, IN 46237-0011 · Phone (178) 512-3313

Location 22650 Warrenville Rd, Suite 280Downers Grove, IL 60515 · Phone (630) 324-7900 · Fax (630) 324-7942

Other Identifiers 4

Other202172Urbana/rockford/moline

Medicaid36079121IL

OtherS26620Cook Group

Other344390Dupage Group

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, CareSource, Cigna 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

Dr. Marc W Gerdisch 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 ID9638109721

PECOS Enrollment IDI20070323000005

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 Marc Gerdisch reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Iu Health Medical Group, LLC

Same address

General Practice

1701 N SENATE BLVD
Indianapolis, IN 46202

Reassigned Medicare billing, Indiana enrollment
5,212 clinicians in this Medicare group

NPI 1326893777 (317) 962-2000

Cardiac Surgery Associates Sc

171 mi

Thoracic Surgery (Cardiothoracic Vascular Surgery)

2650 WARRENVILLE RD, SUITE 280
Downers Grove, IL 60515

Reassigned Medicare billing, Iowa, Illinois and Indiana enrollments
13 clinicians in this Medicare group

NPI 1043269160 (630) 324-7900

Genesis Health System

261 mi

Surgery

1227 E RUSHOLME ST
Davenport, IA 52803

Reassigned Medicare billing, Iowa enrollment
358 clinicians in this Medicare group

NPI 1528616901 (563) 421-3408

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 13

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.

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.

27 services27 patients

Replacement of aortic valve on heart-lung machine 33405

The aortic valve replacement on a heart-lung machine is a procedure where your faulty aortic valve is replaced with a new one. During this operation, a machine takes over the job of your heart and lungs, ensuring the blood supply to your body is maintained.

24 services24 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

24 services24 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.

22 services22 patients

Replacement of mitral valve on heart-lung machine 33430

Mitral valve replacement involves a surgeon removing a damaged or diseased mitral valve in your heart and replacing it with a new, healthy one. This is done while your body is connected to a heart-lung machine, which takes over your heart's pumping function during the procedure.

21 services21 patients

Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and G0180

This is a service where a doctor or authorized practitioner certifies that you require Medicare-covered home health services. They will communicate with the home health agency and review reports on your health status to ensure you receive appropriate care. This does not involve an in-person visit.

17 services17 patients

Extensive destruction and reconstruction of right upper heart chamber on heart-lung machine 33259

This procedure involves the significant repair and rebuilding of the right upper chamber of your heart, using a heart-lung machine. This machine takes over heart and lung functions during the operation, ensuring oxygen-rich blood circulates in your body.

13 services13 patients

Replacement of aortic valve through the skin and femoral artery 33361

This procedure, known as Transcatheter Aortic Valve Replacement (TAVR), involves replacing a damaged aortic valve through a small incision in the leg. A catheter is inserted into the femoral artery and guided up to the heart. The new valve is then positioned and deployed, restoring normal blood flow.

12 services12 patients

Harvest of vein using an endoscope 33508

Harvesting a vein using an endoscope is a procedure where a small camera is used to help surgeons remove a vein from your body. This vein is often used to bypass a blocked artery, improving blood flow to your heart.

12 services12 patients

Coronary artery bypass or valve procedure reoperation more than 1 month after original operation 33530

A coronary artery bypass or valve procedure reoperation is a surgery performed more than a month after the initial operation. This procedure restores blood flow to the heart or repairs/replaces a damaged heart valve, improving heart function and patient health.

11 services11 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.

11 services11 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Indiana University Health

Acute Care Hospitals · Indianapolis, IN

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150056

Location1701 N Senate BlvdIndianapolis, IN 46202 · Marion County

Emergency services Birthing friendly

Franciscan Health Indianapolis

Acute Care Hospitals · Indianapolis, IN

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number150162

Location8111 S Emerson AveIndianapolis, IN 46237 · Marion County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 46202 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

$161.76 typical visit price

range $53.07 – $161.76

Typical copayment $40.44 (range $13.26 – $40.44)

Most-billed visit code 99205

Established Patient

$66.48 typical visit price

range $16.93 – $132.22

Typical copayment $16.62 (range $4.23 – $33.05)

Most-billed visit code 99213

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.

THOMAS M DONAHUE MD

Anesthesiology

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Marion County (317) 577-4200

DR. GINA MARIE DIANTONIO SWARTZEL M.D.

Emergency Medicine

1701 N SENATE BLVD, B401
INDIANAPOLIS, IN 46202

Marion County (317) 962-5975

NASER A KAFEEL DO

Internal Medicine

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Marion County (317) 962-8776

ZACHARY JARRETT DO

Internal Medicine (Critical Care Medicine)

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Marion County (317) 962-5820

BARBRA A BACHMEIER NP

Nurse Practitioner (Family)

1701 N SENATE BLVD, RM AG 001
INDIANAPOLIS, IN 46202

Marion County (317) 962-3886

BRIAN T ROBINSON MD

Internal Medicine

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Marion County (317) 962-8776

MARK H HOYER MD

Pediatrics (Pediatric Cardiology)

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Marion County (317) 678-3900

SHALINI K MANCHANDA MD

Internal Medicine (Sleep Medicine)

1701 N SENATE BLVD
INDIANAPOLIS, IN 46202

Marion County (888) 484-3258

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 Marc Gerdisch's NPI number?

The NPI number for Marc Gerdisch is 1508822255. It was assigned to this individual provider in the NPPES registry on April 21, 2006.

Where is Marc Gerdisch located?

Marc Gerdisch practices at 1701 N Senate Blvd, Indianapolis, IN 46202. The listed phone number is (317) 962-3256.

What is Marc Gerdisch's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Marc Gerdisch enrolled in Medicare?

Yes. Marc Gerdisch 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 Marc Gerdisch's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Marc Gerdisch reassigns Medicare benefits to 3 organizations: Iu Health Medical Group, LLC (Indianapolis, IN), Cardiac Surgery Associates Sc (Downers Grove, IL) and Genesis Health System (Davenport, IA). 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 Marc Gerdisch's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Marc Gerdisch accept?

Health plans from Anthem Blue Cross and Blue Shield, CareSource, Cigna Healthcare, Oscar Health and Wellmark Health Plan of Iowa, Inc. list Marc Gerdisch 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 Marc Gerdisch affiliated with any hospitals?

According to CMS data, Marc Gerdisch is affiliated with Indiana University Health and Franciscan Health Indianapolis.

When was this NPI record last updated?

The NPPES record for Marc Gerdisch was last updated on April 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.