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Internal Medicine Providers in Arlington Heights, IL

Browse 53 Internal Medicine providers listed in NPPES with a practice address in Arlington Heights, Illinois.

53 Healthcare Providers

How Arlington Heights compares with the U.S.

Arlington Heights has 70 clinicians in Internal Medicine per 100,000 residents, about 1.6 times the U.S. rate of 44.

That is 53 active clinicians in Internal Medicine with a practice address in Arlington Heights, for a population of 76,005.

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 Arlington Heights listed in the CMS Medicare file (29 of 29) 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.

48% of clinicians in Internal Medicine in Arlington Heights listed in the CMS Medicare file (14 of 29) 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 Arlington Heights, IL

Source: CMS PECOS
PECOS Enrolled Specialists 40 In Arlington Heights, IL
Part B Lab & Imaging Eligible 40 Diagnostic Referrals
DME Ordering Eligible 40 Durable Medical Equipment
Home Health Agency Referrals 40 HHA Ordering Eligible
Showing 1โ€“20 of 53 providers
With recent CMS data first, then Aโ€“Z

Dr. Chong H. Ahn , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
1430 N. Arlington Heights Rd #104, Arlington Heights, IL 60004
Phone: 8472535985
NPI Identifier 1871585216
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Dr. Jerry Andrews , DO

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
657 E Golf Rd, Suite 311, Arlington Heights, IL 600054968
Phone: 8473788233
NPI Identifier 1205875507
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Dr. Carl David Bakken , MD

Internal Medicine

Active NPI Status
1051 W Rand Rd Ste 110, Arlington Heights, IL 600042315
Phone: 8476189292
NPI Identifier 1821023243
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Dr. Ruhi Bari , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
800 W Central Rd, Arlington Heights, IL 600052349
Phone: 8776359229
NPI Identifier 1043960362
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Dr. Stephanie Anne Bartels , MD

Internal Medicine

Active NPI Status
1051 W Rand Rd # 110, Arlington Heights, IL 600042315
Phone: 8476189292
NPI Identifier 1871522300
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Dr. Yechiel Berkowicz , MD

Internal Medicine

Active NPI Status
3405 N Arlington Heights Rd, Arlington Heights, IL 600041536
Phone: 8473980063
NPI Identifier 1194772509
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Dr. Janis Cho , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1051 W. Rand Rd. Suite L02, Arlington Heights, IL 600042315
Phone: 8476181640
NPI Identifier 1366825119
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Dr. Heyer C Devarapalli , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1015 S Evergreen Ave, Arlington Heights, IL 600053144
Phone: 8472960336
NPI Identifier 1588704381
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Dr. Susan Debra Elbaum , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1051 W Rand Rd # 110, Arlington Heights, IL 600042315
Phone: 8476189292
NPI Identifier 1972643633
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Dr. Margarita Etingen , MD

Internal Medicine

Active NPI Status
800 W Central Rd, Arlington Heights, IL 600052349
Phone: 8476185660
NPI Identifier 1982881710
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Dr. David Feerst , MD

Internal Medicine

Active NPI Status
605 W Central Rd, #100, Arlington Heights, IL 600052377
Phone: 8475908100
NPI Identifier 1508931767
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Dr. Diane Flershem , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
3405 N Arlington Heights Rd, Arlington Heights, IL 600041536
Phone: 8475779300
NPI Identifier 1447205869
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Dr. Noreen Galanter , MD

Internal Medicine

Active NPI Status
1051 W Rand Rd # 110, Arlington Heights, IL 600042315
Phone: 8473428220
NPI Identifier 1871514562
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Dr. Doron Galili , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
800 W Central Rd, Arlington Heights, IL 600052349
Phone: 8472278987
NPI Identifier 1215160320
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Dr. Patricia A Graham , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1515 W Dundee Rd, Arlington Heights, IL 600041435
Phone: 8475901515
NPI Identifier 1407017809
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Dr. Theodore Morrison Homa , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
800 W Oakton St, Arlington Heights, IL 600044602
Phone: 8472229901
NPI Identifier 1699710483
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Dr. Mamdouh Latif Ishak , MD

Internal Medicine

Active NPI Status
121 S Wilke Road, Suite 110, Arlington Heights, IL 600051524
Phone: 8473984536
NPI Identifier 1275612343
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Dr. Abdallah Karam , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment
2101 S Arlington Heights Rd Ste 100, Arlington Heights, IL 600054198
Phone: 8474272100
NPI Identifier 1144257395
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Dr. Akber Ali Khan , MD

Internal Medicine

Active NPI Status
825 E Golf Rd, 2nd Floor, Arlington Heights, IL 600055700
Phone: 8476409180
NPI Identifier 1851302939
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Dr. Katherine A Kotcherian , MD

Internal Medicine

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
1051 W Rand Rd Ste 110, Arlington Heights, IL 600042315
Phone: 8476189292
NPI Identifier 1740215177
View Full Profile

Frequently Asked Questions about Internal Medicine in Arlington Heights

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.