219-931-52278840 Calumet Ave, Suite 101 · Munster, IN 46321
Patient Portal7 Locations
Kidney Diseases & Hypertension

Specialized kidney care, close to home in Northwest Indiana.

Board-certified nephrology across seven convenient locations — expert management of chronic kidney disease, hypertension, and dialysis, delivered with the continuity of a practice that has served the region for decades.

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7
NW Indiana
locations
7
Board-certified
physicians
25+
Years serving
the region
Nephrology care at Nephrology Specialists, P.C.
Modern offices across NW Indiana
Contact Us
☎
Main Phone
219-931-5227
◷
Hours
Mon–Fri · 8:30am – 4:30pm
✦
New Patients
Referrals welcome — same-week scheduling
Our Physicians

Seven board-certified nephrologists

A stable team that has cared for Northwest Indiana for decades — your kidney care stays with the same physicians, year after year.

Dr. Raied Abdullah
Dr. Raied Abdullah
M.D. · Nephrology
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Dr. Maher Ajam
Dr. Maher Ajam
M.D. · Nephrology
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Dr. Shahabul Arfeen
Dr. Shahabul Arfeen
M.D., FACP, FRCP (UK)
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Dr. Sanjeev Rastogi
Dr. Sanjeev Rastogi
M.D., M.R.C.P.
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Dr. Mohammad Saleh
Dr. Mohammad Saleh
M.D. · Nephrology
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Dr. Jonathan Silverman
Dr. Jonathan Silverman
M.D. · Nephrology
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Dr. Mohammad Tinawi
Dr. Mohammad Tinawi
M.D. · Nephrology
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Elise Ballard, NP
Elise Ballard
Family Nurse Practitioner
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Practice Team
Amy Rajtar
Amy Rajtar
Practice Manager & HR
Maya Hughes
Maya Hughes
Assistant Practice Manager
Why families across the Region choose us

Decades of specialized kidney care — close to home, from physicians who know Northwest Indiana.

7
NW Indiana locations
7
Board-certified physicians
25+
Years serving the region
What We Treat

Comprehensive kidney & hypertension care

From early-stage chronic kidney disease through dialysis and transplant — coordinated, long-term management in one practice.

01
Chronic Kidney Disease
Staging, slowing progression, and coordinated long-term management.
02
Hypertension
Diagnosis and treatment of resistant and secondary high blood pressure.
03
Dialysis
Hemodialysis and peritoneal dialysis, with vascular access planning.
04
Transplant Care
Pre- and post-transplant evaluation and ongoing follow-up.
05
Kidney Stones
Evaluation, prevention, and metabolic stone work-up.
06
Electrolyte Disorders
Management of sodium, potassium, and acid–base imbalance.
Patient Education

Plain-language guides

Clear, calm explanations of the conditions we treat — written for patients and families, not specialists.

Living well on dialysis
Dialysis
Living Well on Hemodialysis

What to expect from treatment, diet considerations, and questions worth asking your care team.

Read the guide →
Considering a kidney transplant
Transplant
Considering a Kidney Transplant

How evaluation works, what life after transplant looks like, and the role of your nephrologist.

Read the guide →
Eating for kidney health
Diet
Eating for Kidney Health

Practical guidance on sodium, potassium, and phosphorus — with handouts you can take home.

Read the guide →
Browse all patient guides →CKD Risk Calculator →
Close to home

Proudly caring for Northwest Indiana for over 25 years.

From Munster to Michigan City — expert kidney care, near where you live.

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Locations

Seven offices across Northwest Indiana

Care close to where you live, with hospital affiliations throughout the Region.

01
Munster
8840 Calumet Ave, Suite 101 · Munster, IN 46321
02
Merrillville
521 E. 86th Ave, Suite K · Merrillville, IN 46410
03
Gary
3503 Martin Luther King Dr · Gary, IN 46409
04
Michigan City
9836 W. 400 N. · Michigan City, IN 46360
05
Portage
5823 US-6 · Portage, IN 46368
06
Valparaiso
606 E. Lincolnway · Valparaiso, IN 46383
07
Whiting
2075 Indianapolis Blvd · Whiting, IN 46394
Insurance

Most major plans accepted

Medicare
Medicaid
Anthem BCBS
Aetna
Cigna
UnitedHealthcare
Humana
+ most major plans
Coverage varies by plan and location. Please call 219-931-5227 and we'll confirm your insurance is accepted before your visit.
Contact

Request an appointment

Call us, or send a request and our office will reach out to schedule.

☎
☏
Main Office
8840 Calumet Ave, Suite 101
Munster, IN 46321
◷
Office Hours
Monday – Friday
8:30am – 4:30pm
✦
Referrals
Physician referrals welcome
Same-week scheduling available

Appointment request

We typically respond within one business day.
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