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Internal Medicine Providers in Wheaton, IL

Browse 20 Internal Medicine providers listed in NPPES with a practice address in Wheaton, Illinois.

20 Healthcare Providers

How Wheaton compares with the U.S.

Wheaton has 37 clinicians in Internal Medicine per 100,000 residents, 16% lower than the U.S. rate of 44.

That is 20 active clinicians in Internal Medicine with a practice address in Wheaton, for a population of 53,557.

The Illinois rate is 57 per 100,000 residents.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places.

100% of clinicians in Internal Medicine in Wheaton listed in the CMS Medicare file (17 of 17) accept Medicare assignment. That is similar to the Illinois share of 96%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

82% of clinicians in Internal Medicine in Wheaton listed in the CMS Medicare file (14 of 17) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Illinois share of 35%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Internal Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine practitioners in Wheaton, IL

Source: CMS PECOS
PECOS Enrolled Specialists 17 In Wheaton, IL
Part B Lab & Imaging Eligible 17 Diagnostic Referrals
DME Ordering Eligible 17 Durable Medical Equipment
Home Health Agency Referrals 17 HHA Ordering Eligible
Showing 1โ€“20 of 20 providers
With recent CMS data first, then Aโ€“Z

Dr. Douglas A Ambler , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7 Blanchard Cir Ste 206, Wheaton, IL 601892039
Phone: 6306530848
NPI Identifier 1154343689
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Dr. Sonika Anand , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
140 East Loop Road, Wheaton, IL 60189
Phone: 6306655995
NPI Identifier 1295817971
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Dr. James Dalton Boyer , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
150 E Willow Ave Ste 200, Wheaton, IL 601875529
Phone: 6306656200
NPI Identifier 1801452073
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Dr. Melissa Nicole Dattalo , MD, MPH

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1800 N Main St Ste 219, Wheaton, IL 601873112
Phone: 6306144960
NPI Identifier 1578705067
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Dr. Firdose Gill , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7 Blanchard Cir Ste 206, Wheaton, IL 601892039
Phone: 6306530848
NPI Identifier 1407081342
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Dr. Nadia Khan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7 Blanchard Cir, Wheaton, IL 601892037
Phone: 6306530848
NPI Identifier 1154413136
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Dr. Scott J Kolbaba , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7 Blanchard Cir, Suite 106, Wheaton, IL 601871037
Phone: 6305807600
NPI Identifier 1396776613
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Dr. Patrick Michael Mackey , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
150 E Willow Ave Ste 300, Wheaton, IL 601875529
Phone: 6304697700
NPI Identifier 1316151848
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Dr. Maryanne K Miller , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1800 N Main St, Wheaton, IL 601873112
Phone: 6306656200
NPI Identifier 1275500613
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Dr. Sapan M Patel , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
150 E Willow Ave Ste 110, Wheaton, IL 601875529
Phone: 6309672000
NPI Identifier 1154530384
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Dr. Mathew Suresh Philip , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
150 E Willow Ave # 100, Wheaton, IL 601875476
Phone: 6309462800
NPI Identifier 1124282082
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Dr. Anthony J Pipitone , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7 Blanchard Cir, Suite 206, Wheaton, IL 601892039
Phone: 6306530848
NPI Identifier 1821010349
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Dr. Christopher G Santi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2001 S Wiesbrook Rd, Wheaton, IL 60189
Phone: 6306144000
NPI Identifier 1124006697
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Dr. Melissa Schumacher , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7 Blanchard Cir Ste 206, Wheaton, IL 601892039
Phone: 6306530848
NPI Identifier 1790230787
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Dr. James Scruggs , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
150 E Willow Ave Ste 200, Wheaton, IL 601875529
Phone: 6306656200
NPI Identifier 1407824089
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Dr. Christopher M Tebeau , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
7 Blanchard Cir, Suite 206, Wheaton, IL 601892039
Phone: 6306530848
NPI Identifier 1427070986
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Dr. James W. Erlenborn , MD

Internal Medicine

Active NPI Status
1506 E Roosevelt Rd, Wheaton, IL 601876806
Phone: 6306820639
NPI Identifier 1982864377
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Dr. Oommen A Koshy , MD

Internal Medicine

Active NPI Status
1648 S Prospect St, Wheaton, IL 601897756
Phone: 6306821254
NPI Identifier 1932533874
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Dr. Julie A Leischner , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
111 N County Farm Rd, Wheaton, IL 601873988
Phone: 6306827400
NPI Identifier 1336222488
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Dr. Stephen Pierson , MD

Internal Medicine

Active NPI Status
1800 N Main St, Wheaton, IL 601873112
Phone: 6306656200
NPI Identifier 1518935360
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Frequently Asked Questions about Internal Medicine in Wheaton

How do I check a Internal Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the Illinois licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.