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Internal Medicine Providers in Libertyville, IL

Browse 27 Internal Medicine providers listed in NPPES with a practice address in Libertyville, Illinois.

27 Healthcare Providers

How Libertyville compares with the U.S.

Libertyville has 132 clinicians in Internal Medicine per 100,000 residents, 3.0 times the U.S. rate of 44.

That is 27 active clinicians in Internal Medicine with a practice address in Libertyville, for a population of 20,525.

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. 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 in Libertyville listed in the CMS Medicare file (18 of 18) 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.

61% of clinicians in Internal Medicine in Libertyville listed in the CMS Medicare file (11 of 18) 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 Libertyville, IL

Source: CMS PECOS
PECOS Enrolled Specialists 22 In Libertyville, IL
Part B Lab & Imaging Eligible 23 Diagnostic Referrals
DME Ordering Eligible 24 Durable Medical Equipment
Home Health Agency Referrals 23 HHA Ordering Eligible
Showing 1โ€“20 of 27 providers
With recent CMS data first, then Aโ€“Z

Dr. Kalpana Puppala Bicknell , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
801 S. Milwaukee Ave., Advocate Condell Medical Center, Libertyville, IL 60048
Phone: 8479905260
NPI Identifier 1033260476
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Dr. Jonathan Birnberg , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
825 S Milwaukee Ave, Libertyville, IL 600483218
Phone: 8475665200
NPI Identifier 1477731396
View Full Profile

Dr. Justin Choi , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
825 S Milwaukee Ave, Libertyville, IL 600483218
Phone: 8476808066
NPI Identifier 1497382196
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Dr. Mark James Chyna , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
890 Garfield Ave, Suite 209, Libertyville, IL 60048
Phone: 8473673843
NPI Identifier 1740273507
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Dr. Mohina Gupta , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1870 W Winchester Rd Ste 248, Libertyville, IL 600485360
Phone: 8472818902
NPI Identifier 1174578843
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Dr. Michael Seward Hall , MD

Internal Medicine

Active NPI Status
1268 American Way, Libertyville, IL 600483936
Phone: 8473676400
NPI Identifier 1528053972
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Dr. Syeda A. Iftikhar , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1507 S Falcon Dr, Libertyville, IL 600484897
Phone: 2245678713
NPI Identifier 1770599938
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Dr. Najla Khan , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
825 S Milwaukee Ave, Libertyville, IL 600483218
Phone: 8475665200
NPI Identifier 1699260554
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Dr. Lauren Marie Mackinnon , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
825 S Milwaukee Ave, Libertyville, IL 600483218
Phone: 8475665200
NPI Identifier 1366018061
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Dr. Andres Felipe Mafla Grisales , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
825 S Milwaukee Ave, Libertyville, IL 600483218
Phone: 8475665200
NPI Identifier 1326249285
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Dr. Mariusz Milejczyk , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1880 W Winchester Rd Ste 106, Libertyville, IL 600485321
Phone: 8473674277
NPI Identifier 1467598235
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Dr. Elliot F. Miller , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1800 Hollister Dr, Libertyville, IL 600485263
Phone: 8478163084
NPI Identifier 1164441572
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Dr. Emmanuel Nnanna Njoku , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1880 W Winchester Rd, 106, Libertyville, IL 600485341
Phone: 7324238404
NPI Identifier 1689981045
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Dr. Mark Riederman , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1800 Hollister Dr, Suite 211, Libertyville, IL 600485266
Phone: 8478163084
NPI Identifier 1699782151
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Lynda Roden , DOSC

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1870 W Winchester Rd, Ste 143, Libertyville, IL 600485358
Phone: 8475497777
NPI Identifier 1689790008
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Dr. Robert J Romanelli , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
900 Technology Way, Suite 230, Libertyville, IL 600485364
Phone: 8475488269
NPI Identifier 1144208554
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Dr. Adam M Rubinstein , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
755 S Milwaukee Ave Ste 261, Libertyville, IL 600483266
Phone: 8472470300
NPI Identifier 1871541839
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Dr. Rani Sharma , MD

Internal Medicine

Active NPI Status
131 E Park Ave, Suite # 103, Libertyville, IL 600482800
Phone: 8479682800
NPI Identifier 1033293493
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Dr. Melvin Speisman , MD

Internal Medicine

Active NPI Status
825 S Milwaukee Ave, Libertyville, IL 600483218
Phone: 8475732800
NPI Identifier 1295771186
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Dr. Shana Esther Weiss , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1900 Hollister Dr, Suite 250, Libertyville, IL 600485227
Phone: 8475739663
NPI Identifier 1932149945
View Full Profile

Frequently Asked Questions about Internal Medicine in Libertyville

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.