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Internal Medicine - Nephrology Specialists in Merrillville, IN

Browse 19 Internal Medicine - Nephrology providers listed in NPPES with a practice address in Merrillville, Indiana.

19 Healthcare Providers

How Merrillville compares with the U.S.

Merrillville has 52 clinicians in Internal Medicine - Nephrology per 100,000 residents, 13.0 times the U.S. rate of 4.0.

That is 19 active clinicians in Internal Medicine - Nephrology with a practice address in Merrillville, for a population of 36,476.

The Indiana rate is 3.9 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.

94% of clinicians in Internal Medicine - Nephrology in Merrillville listed in the CMS Medicare file (15 of 16) accept Medicare assignment. That is similar to the Indiana share of 97%.

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.

31% of clinicians in Internal Medicine - Nephrology in Merrillville listed in the CMS Medicare file (5 of 16) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the Indiana 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 - Nephrology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Internal Medicine - Nephrology practitioners in Merrillville, IN

Source: CMS PECOS
PECOS Enrolled Specialists 19 In Merrillville, IN
Part B Lab & Imaging Eligible 19 Diagnostic Referrals
DME Ordering Eligible 19 Durable Medical Equipment
Home Health Agency Referrals 19 HHA Ordering Eligible
Showing 1โ€“19 of 19 providers
With recent CMS data first, then Aโ€“Z

Dr. Gaurav Agarwal , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
6061 Broadway, Merrillville, IN 464102619
Phone: 2198842640
NPI Identifier 1033432109
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Dr. Maher Ajam , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
9229 Taft St, Merrillville, IN 464106911
Phone: 2197695227
NPI Identifier 1548265135
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Yves Frantz Brignol , MBA, HA, CMC

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1396742748
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Dr. Saurabh Chawla , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
6061 Broadway, Merrillville, IN 464102619
Phone: 2198842011
NPI Identifier 1528137411
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Dr. Kenneth Lee Choi , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
90 W 86th Ave, Nani, Ltd, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1619098571
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Dr. Rafael Fletes , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1952306466
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Dr. Sandra L Gadson , MD

Internal Medicine - Nephrology

Active NPI Status
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1841297348
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Dr. Thomas Carl Golubski , MD

Internal Medicine - Nephrology

Active NPI Status
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1639176118
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Dr. Nader Ismail , DO

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1689135618
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Dr. Ali Kheirbek , MD

Internal Medicine - Nephrology

Active NPI Status
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1174520415
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Dr. Sridivya Kumar , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
200 E 80th Pl Unit 2, Merrillville, IN 464105671
Phone: 2194720379
NPI Identifier 1538332689
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Dr. Branislav M Marcic , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
757 E 81st Ave, Merrillville, IN 464105538
Phone: 2194720379
NPI Identifier 1356396378
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Dr. Kmlst Moorthi , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
90 W 86th Ave, Nephrology Associates Of Northern Indiana, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1861494049
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Dr. Kevin Andre Myrie , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
90 W 86th Ave, Nephrology Associates Of Northern Indiana, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1316193162
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Dr. Vikash Kumar Sinha , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment
757 E 81st Ave, Merrillville, IN 464105538
Phone: 2194720379
NPI Identifier 1740628726
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Dr. Marisela Varela , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1780678870
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Dr. Venkat Vavilala , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1730186081
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Dr. Katrina E Wright , MD

Internal Medicine - Nephrology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
90 W 86th Ave, Merrillville, IN 464107086
Phone: 2197911555
NPI Identifier 1073501136
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Dr. Kadambari Jangam , MD

Internal Medicine - Nephrology

Active NPI Status
757 E 81st Ave, Merrillville, IN 464105538
Phone: 2194720379
NPI Identifier 1891378568
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Frequently Asked Questions about Internal Medicine - Nephrology in Merrillville

How do I check a Internal Medicine - Nephrology 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 Indiana 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.