WILLIAM J GILL M.D.
NPI 1598720120
Internal Medicine - Cardiovascular Disease in Indianapolis, IN

Q: What is William Gill's NPI number?

The NPI number for William Gill is 1598720120. It was assigned to this individual provider in the NPPES registry on April 18, 2006.

Q: What is William Gill's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for William Gill was last updated on January 20, 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 April 18, 2006PECOS EnrolledAccepts Medicare Assignment

1801 N SENATE BLVD, INDIANAPOLIS, IN 46202(317) 962-0529 Get Directions Write a Review

NPPES record last updated: January 20, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About William J Gill M.d. NPPES

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

WILLIAM J GILL M.D. (NPI 1598720120) is an individual cardiovascular disease provider in Indianapolis, Indiana, licensed in Indiana (01059062) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Hendricks Regional Health, and is a graduate of Indiana University School Of Medicine (1998).

NPPES Registry Identity

NPI1598720120

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameWILLIAM J GILLCredential: M.D.

Location Address1801 N SENATE BLVDIndianapolis, IN 46202-1228

Mailing Address250 N Shadeland AveIndianapolis, IN 46219-4959

Phone(317) 962-0529

Sole ProprietorNo

Medical School CMSIndiana University School Of MedicineGraduated 1998

Enumeration DateApril 18, 2006

Last NPPES UpdateJanuary 20, 2021

NPPES CertifiedJanuary 20, 2021

✔ NPI 1598720120 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in IN · 01059062

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedInternal Medicine · Clinical Cardiac ElectrophysiologyTaxonomy 207RC0001X · License 11008757A (IN)

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License 11008757A (IN)

1801 N SENATE BLVD, Indianapolis, IN 46202

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Other Identifiers 1

Medicaid100465190IN

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, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William J Gill 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 ID244209518

PECOS Enrollment IDI20041002000187

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 William Gill reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Iu Health Medical Group, LLC

0.1 mi

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

Indiana University Health Care Associates, Inc.

0.1 mi

Dietitian, Registered

1800 N CAPITOL AVE, B445
Indianapolis, IN 46202

Reassigned Medicare billing, Indiana enrollment
1,781 clinicians in this Medicare group

NPI 1679949002 (317) 944-3500

Indiana University Health, Inc

0.2 mi

Cardiovascular Disease

1701 N SENATE BLVD
Indianapolis, IN 46202

Reassigned Medicare billing, Indiana enrollment
148 clinicians in this Medicare group

NPI 1376586719 (317) 962-2000

University Medical Diagnostic Associates, Inc.

0.2 mi

Internal Medicine

1701 N SENATE BLVD
Indianapolis, IN 46202

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

NPI 1861441537 (317) 274-8660

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 22

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.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

2,435 services1,613 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.

1,340 services1,014 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.

603 services432 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.

434 services413 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.

95 services51 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010

75 services73 patients

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.

67 services65 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician 93016

An exercise or drug-induced heart stress test with ECG involves monitoring your heart's activity while it's under stress, either from exercise or medication. A doctor supervises the entire procedure to ensure safety and accuracy in results. This test helps detect heart problems.

60 services60 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

55 services55 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.

49 services45 patients

Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211

This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.

44 services18 patients

Blood test, clotting time 85610

A clotting time blood test helps determine how quickly your blood forms clots, a process crucial to stop bleeding. During the test, a small blood sample is taken from your arm. The sample is then analyzed in a lab to see how long it takes for a clot to form.

36 services17 patients

External shock to heart to regulate heart beat 92960

This procedure, known as cardioversion, uses an external electrical shock to restore your heart's normal rhythm. It's typically performed when irregular heartbeats, or arrhythmias, are causing severe symptoms and aren't responding to medications.

30 services29 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

30 services30 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.

30 services30 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.

22 services22 patients

Ultrasound of heart with probe in esophagus, with report 93312

This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.

17 services17 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.

17 services17 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

16 services16 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

15 services15 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.

15 services15 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.

14 services12 patients

Hospital Affiliations CMS Care Compare 5

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

Hendricks Regional Health

Acute Care Hospitals · Danville, IN

5/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number150005

Location1000 E Main StDanville, IN 46122 · Hendricks County

Emergency services Birthing friendly

Indiana University Health Bloomington Hospital

Acute Care Hospitals · Bloomington, IN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150051

Location2651 East Discovery ParkwayBloomington, IN 47408 · Monroe County

Emergency services Birthing friendly

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

Iu Health West Hospital

Acute Care Hospitals · Avon, IN

4/5 CMS rating

OwnershipProprietary

CMS Certification Number150158

Location1111 N Ronald Reagan PkwyAvon, IN 46123 · Hendricks County

Emergency services Birthing friendly

Indiana University Health North Hospital

Acute Care Hospitals · Carmel, IN

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number150161

Location11700 N Meridian StCarmel, IN 46032 · Hamilton 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

$122.49 typical visit price

range $53.07 – $161.76

Typical copayment $30.62 (range $13.26 – $40.44)

Most-billed visit code 99204

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.

DR. DOMENICO CALCATERRA MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)

1801 N SENATE BLVD, STE 3300
INDIANAPOLIS, IN 46202

Marion County (317) 923-1787

JOHN THOMAS GRIPE M.D.

Anesthesiology

1801 N SENATE BLVD
INDIANAPOLIS, IN 46202

Marion County (317) 577-4200

MORGAN LEIGH KINNEY NP

Nurse Practitioner (Gerontology)

1801 N SENATE BLVD, SUITE 635
INDIANAPOLIS, IN 46202

Marion County (317) 962-3235

OLAJIDE O ODELOWO MD

Internal Medicine (Gastroenterology)

1801 N SENATE BLVD, SUITE 400
INDIANAPOLIS, IN 46202

Marion County (317) 962-6300

DAVID NEIL BROWN MD

Internal Medicine (Gastroenterology)

1801 N SENATE BLVD, STE 400
INDIANAPOLIS, IN 46202

Marion County (317) 962-6300

BENJAMIN MICHAEL KLINE PA-C

Physician Assistant

1801 N SENATE BLVD, SUITE 535
INDIANAPOLIS, IN 46202

Marion County (317) 963-1950

DR. SAMUEL HOLLINGSWORTH M.D.

Internal Medicine

1801 N SENATE BLVD, STE 400
INDIANAPOLIS, IN 46202

Marion County (317) 962-5581

DR. ANDREW D NIGH MD

Surgery

1801 N SENATE BLVD, SUITE 635
INDIANAPOLIS, IN 46202

Marion County (317) 963-1453

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 William Gill's NPI number?

The NPI number for William Gill is 1598720120. It was assigned to this individual provider in the NPPES registry on April 18, 2006.

Where is William Gill located?

William Gill practices at 1801 N Senate Blvd, Indianapolis, IN 46202. The listed phone number is (317) 962-0529.

What is William Gill's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is William Gill enrolled in Medicare?

Yes. William Gill 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 William Gill's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Gill reassigns Medicare benefits to 4 organizations: Iu Health Medical Group, LLC (Indianapolis, IN), Indiana University Health Care Associates, Inc. (Indianapolis, IN), Indiana University Health, Inc (Indianapolis, IN) and University Medical Diagnostic Associates, Inc. (Indianapolis, IN). 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 William Gill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Gill accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 2 other insurers list William Gill 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 William Gill affiliated with any hospitals?

According to CMS data, William Gill is affiliated with Hendricks Regional Health, Indiana University Health Bloomington Hospital, Indiana University Health, Iu Health West Hospital and Indiana University Health North Hospital.

When was this NPI record last updated?

The NPPES record for William Gill was last updated on January 20, 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.