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Internal Medicine Providers in Deerfield, IL

Browse 21 Internal Medicine providers listed in NPPES with a practice address in Deerfield, Illinois.

21 Healthcare Providers

How Deerfield compares with the U.S.

Deerfield has 108 clinicians in Internal Medicine per 100,000 residents, 2.4 times the U.S. rate of 44.

That is 21 active clinicians in Internal Medicine with a practice address in Deerfield, for a population of 19,518.

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.

93% of clinicians in Internal Medicine in Deerfield listed in the CMS Medicare file (13 of 14) 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.

50% of clinicians in Internal Medicine in Deerfield listed in the CMS Medicare file (7 of 14) 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 Deerfield, IL

Source: CMS PECOS
PECOS Enrolled Specialists 15 In Deerfield, IL
Part B Lab & Imaging Eligible 16 Diagnostic Referrals
DME Ordering Eligible 17 Durable Medical Equipment
Home Health Agency Referrals 16 HHA Ordering Eligible
Showing 1โ€“20 of 21 providers
With recent CMS data first, then Aโ€“Z

Dr. Lisa Y. Abrams , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
190 Waukegan Rd Ste B, Deerfield, IL 600155655
Phone: 8479454575
NPI Identifier 1568521508
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Dr. Victoria Amesbury , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
720 Osterman Ave, Suite 103, Deerfield, IL 600154471
Phone: 8479453030
NPI Identifier 1982763926
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Dr. Dana Lynn Ben-Dov , MD

Internal Medicine

Active NPI Status
111 S Pfingsten Rd Ste 300, Deerfield, IL 600154981
Phone: 8475971980
NPI Identifier 1194709477
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Dr. Jonathan R. Brown , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
190 Waukegan Rd Ste B, Deerfield South, Deerfield, IL 600155655
Phone: 8479454575
NPI Identifier 1811056773
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Dr. Manu Chander , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
190 Waukegan Rd Ste B, Deerfield, IL 600155655
Phone: 8479454575
NPI Identifier 1932268893
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Dr. Lisa Davidoff , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
707 Lake Cook Rd Ste 122, Deerfield, IL 600154909
Phone: 2242961520
NPI Identifier 1104115468
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Mitul Desai

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
108 Wilmot Rd, Deerfield, IL 600155145
Phone: 8475800002
NPI Identifier 1437118361
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Dr. Jeffrey J Foreman , MD

Internal Medicine

Active NPI Status
707 Lake Cook Road, Suite 122, Deerfield, IL 600154909
Phone: 8475599243
NPI Identifier 1881663243
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Dr. Carol Ann Marinch , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
350 S Waukegan Rd Ste 200, Deerfield, IL 600155239
Phone: 8473507297
NPI Identifier 1326270513
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Dr. Julia A Melamed , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
707 Lake Cook Rd, Suite 130, Deerfield, IL 600155613
Phone: 8474183308
NPI Identifier 1235217373
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Dr. Lisa Merle Peck , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
350 S Waukegan Rd Ste 100&200, Deerfield, IL 600155239
Phone: 8475357157
NPI Identifier 1679539563
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Dr. Barry A Rapaport , MD

Internal Medicine

Active NPI Status
1418 Kenton Rd, Deerfield, IL 600152314
Phone: 8479649883
NPI Identifier 1114988417
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Dr. John J Stavrakos , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
720 Osterman Ave, Suite 103, Deerfield, IL 600154471
Phone: 8479453030
NPI Identifier 1215966684
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Dr. Shon Thomas , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
49 S Waukegan Rd Ste 100, Deerfield, IL 600155204
Phone: 8479454575
NPI Identifier 1811634579
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Dr. Nicole Tomczuk , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment
350 S Waukegan Rd Ste 200, Deerfield, IL 600155239
Phone: 8475357157
NPI Identifier 1649920588
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Dr. Peter S. Yoon , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
350 S Waukegan Rd Ste 100&200, Deerfield, IL 600155239
Phone: 8475357157
NPI Identifier 1417905944
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Dr. Allan M Korn , MD

Internal Medicine

Active NPI Status
525 Carriage Way, Deerfield, IL 600154534
Phone: 8479454329
NPI Identifier 1952566119
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Dr. Sashidaran Manikum Moodley , MD

Internal Medicine

Active NPI Status
108 Wilmot Rd, Deerfield, IL 600155145
Phone: 3129821242
NPI Identifier 1174885370
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Dr. George Spencer Patton , MD

Internal Medicine

Active NPI Status
108 Wilmot Rd, Ms 1820, Deerfield, IL 600155145
Phone: 8475800002
NPI Identifier 1891958112
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Dr. Ellen R. Schwartz , MD

Internal Medicine

Active NPI Status
401 Kelburn Road, Deerfield, IL 600154361
Phone: 8472741494
NPI Identifier 1245384684
View Full Profile

Frequently Asked Questions about Internal Medicine in Deerfield

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.