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Internal Medicine - Pulmonary Diseases in Naperville, IL

Browse 14 Internal Medicine - Pulmonary Disease providers listed in NPPES with a practice address in Naperville, Illinois.

14 Healthcare Providers

How Naperville compares with the U.S.

Naperville has 9.3 clinicians in Internal Medicine - Pulmonary Disease per 100,000 residents, 2.0 times the U.S. rate of 4.6.

That is 14 active clinicians in Internal Medicine - Pulmonary Disease with a practice address in Naperville, for a population of 150,692.

The Illinois rate is 4.9 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. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Internal Medicine - Pulmonary Disease in Naperville listed in the CMS Medicare file (13 of 13) accept Medicare assignment. That is similar to the Illinois share of 98%.

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.

77% of clinicians in Internal Medicine - Pulmonary Disease in Naperville listed in the CMS Medicare file (10 of 13) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the Illinois share of 43%.

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 - Pulmonary Disease Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Pulmonary Disease practitioners in Naperville, IL

Source: CMS PECOS
PECOS Enrolled Specialists 14 In Naperville, IL
Part B Lab & Imaging Eligible 14 Diagnostic Referrals
DME Ordering Eligible 14 Durable Medical Equipment
Home Health Agency Referrals 14 HHA Ordering Eligible
Showing 1โ€“14 of 14 providers
With recent CMS data first, then Aโ€“Z

Dr. Shahid M. Ahsan , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr, Naperville, IL 605406550
Phone: 6303558776
NPI Identifier 1740208180
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Dr. Juan Gabriel Flores , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr, Ste 102, Naperville, IL 605406550
Phone: 6308716699
NPI Identifier 1093931909
View Full Profile

Dr. Edward Robert Kessler , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr Ste 200, Naperville, IL 605406552
Phone: 6303558776
NPI Identifier 1427205699
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Dr. Jobby Mampilly , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr Ste 102, Naperville, IL 605406551
Phone: 6308716699
NPI Identifier 1639340029
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Dr. David Mcelligott , MD

Internal Medicine - Pulmonary Disease

Active NPI Status
100 Spalding Dr, Suite 200, Naperville, IL 605406550
Phone: 6303558776
NPI Identifier 1578579850
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Dr. David Joseph Mcelligott , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr Ste 102, Naperville, IL 605406551
Phone: 6308716699
NPI Identifier 1891966982
View Full Profile

Dr. Jasshan Mahesh Mehrotra , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr Ste 200, Naperville, IL 605406552
Phone: 6303558776
NPI Identifier 1194135368
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Dr. Faraaz M. Nayeemuddin , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment
100 Spalding Dr., Suite 200, Naperville, IL 60540
Phone: 6303558776
NPI Identifier 1245612142
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Dr. Ravi Nemivant , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr, Ste 102, Naperville, IL 605406550
Phone: 6308716699
NPI Identifier 1003883463
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Dr. Nicholas John Schlund , DO

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment
100 Spalding Dr., 200, Naperville, IL 605406552
Phone: 6303558776
NPI Identifier 1962965269
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Dr. Mohammed Salman Siddiqui , DO

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1508 Aurora Ave, Naperville, IL 605406210
Phone: 6302648600
NPI Identifier 1922361773
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Dr. Rajive Tandon , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment
100 Spalding Dr Ste 200, Naperville, IL 605406552
Phone: 6303558776
NPI Identifier 1104878115
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Dr. Kristin Marie Wiese , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr Ste 102, Naperville, IL 605406551
Phone: 6308716699
NPI Identifier 1619103280
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Dr. Therese Zeman , MD

Internal Medicine - Pulmonary Disease

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
100 Spalding Dr, Suite 200, Naperville, IL 605406550
Phone: 6303558776
NPI Identifier 1174539472
View Full Profile

Frequently Asked Questions about Internal Medicine - Pulmonary Disease in Naperville

How do I check a Internal Medicine - Pulmonary Disease 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.