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Physicians & Staff
Our Physicians
Manohar Ahuja, MD, MBBS, MRCP

Manohar Ahuja, MD, MBBS, MRCP
In his leisure time Dr. Ahuja enjoys spending time with his family and Hindu Religion Philosophy. His passion is patient care and medical teaching.
Education, Training, and Experience
- 1980: University of Rajasthan (Jaipur, India) Bachelor of Medicine and Surgery (MBBS)
- 1991: Royal College of Physicians of United Kingdom (London, UK) — Medicine (MRCP)
- 1996-1998: Case Western Reserve University — Affiliated with Metro Health Medical Center (Cleveland, OH) — Residency training in Internal Medicine
- 1998-2000: Medical College of Wisconsin (Milwaukee,WI) — Fellowship in Nephrology and Kidney Transplantation
Certifications
- Board Certified in Internal Medicine, 1999
- Board Certified in Nephrology, 2000
Professional Experience
- Private practice — Milwaukee Nephrologists, S.C. (Milwaukee, WI)
- Assistant Professor of Medicine-Nephrology — Medical College of Wisconsin (Milwaukee, WI)
Special Focus
- Acute and chronic renal failure including fluid and electrolyte problems as well as Critical Care Medicine
- Consultative Nephrology
- Dialysis
- Hypertension
- Kidney stones
Kamal Amin, MD

Kamal Amin, MD
In his leisure time, Dr. Amin enjoys golf, travel and spending time with his family.
Education, Training, and Experience
- 1993: King Edward Medical College (Lahore, Pakistan) — Bachelor of Medicine and Bachelor of Science (MBBS)
- 2000: St. Louis University School of Medicine (St. Louis, Missouri) — Internal Medicine Residency
- 2002: St. Louis University School of Medicine (St. Louis, Missouri) — Nephrology Fellowship
Certifications
- Board Certified in Internal Medicine, 2000
- Board Certified in Nephrology, 2002
Professional Experience
- July 2005 to present: Milwaukee Nephrologists, S.C. (Milwaukee, WI)
- July 2002 to present: MedPoint Family Care Center (Milwaukee, WI)
- 2000: Assistant Professor General Internal Medicine, St. Louis University Hospital (St. Louis, Missouri) — Fellow in Nephrology - Division of Nephrology
Special Focus
- General Clinical Nephrology
- Hemodialysis
- Intensive Care
William C. Elliott, JR. MD

William C. Elliott, JR. MD
In his leisure time, Dr. Elliott enjoys spending time with his family.
Education, Training, and Experience
- 1980: Indiana University (Bloomington, IN) BA
- 1984: Indiana University School of Medicine (Indianapolis, IN) MD
- 1984-1985: Medical College of Wisconsin (Milwaukee, WI) — Internship, Internal Medicine
- 1985-1987: Medical College of Wisconsin (Milwaukee, WI) — Residency, Internal Medicine
- Awarded Internist of the Year in 1987
- 1988-1990: Medical College of Wisconsin (Milwaukee, WI) — Fellowship, Nephrology
Certifications
- Board Certified in Internal Medicine, 1987
- Board Certified in Nephrology, 1992
Professional Experience
- 1990-present: Private practice with Milwaukee Nephrologists, S.C. (Milwaukee, WI)
Special Focus
- Hemodialysis
- Palliative Medicine
Lisa Haller, MD

Lisa Haller, MD
In her leisure time, Dr. Haller enjoys spending time with her family, walking, travel, and gourmet cooking.
Education, Training, and Experience
- 1987-1991: University of Illinois (Urbana-Champaign, IL) — BS in Biochemistry
- 1991-1995: University of Illinois (Chicago, IL) — MD
- Ohio State University Hospitals (Columbus, OH) — Internal Medicine Residency
- Ohio State University Hospitals (Columbus, OH) — Nephrology Fellowship
Certifications
- Board Certified in Internal Medicine, 1998
- Board Certified in Nephrology, 2000
Professional Experience
- August 2001 to present: Milwaukee Nephrologists, S.C. (Milwaukee, WI)
- July 2000-July 2001: Ohio State University Hospitals (Columbus, OH)
- Clinical Assistant Professor of Medicine, Division of Nephrology
Special Focus
- General Nephrology and pregnancy [nephrology] related diseases
Matthew H. Hanna, MD

Matthew H. Hanna, MD
Education, Training, and Experience
- 1976: McKendree College (Lebanon, IL) — Honors BS in Biology, Chemistry
- 1979: Southern Illinois University (Springfield, IL) — MD
- June 1979-July 1980: Cleveland Clinic Hospital (Cleveland, OH) — Internship
- July 1980-July 1982: Cleveland Clinic Hospital (Cleveland, OH) — Residency
- July 1981-July 1982: Cleveland Clinic Hospital (Cleveland, OH) — Chief Medical Residency
- 1982: Case Western Reserve University School of Medicine — Medical Student Preceptor
- July 1982-July 1984: University of Iowa Hospital — Fellowship, Division of Nephrology
- July 1983: University of Iowa Hospital — Introduction to Clinic Medicine Preceptor Certifications
- Board Certified in Internal Medicine, Diplomate 1982
- Board Certified in Nephrology, Diplomate 1984
Professional Experience
- Present: Private practice — Milwaukee Nephrologists, S.C. (Milwaukee, WI)
- Assistant Clinical Professor of Medicine, Medical College of Wisconsin (Milwaukee, WI)
- Assistant Clinical Professor of Medicine, University of Wisconsin (Madison, WI)
Ahmed Malik, MD, MPHIL, FASN

Ahmed Malik, MD, MPHIL, FASN
In his leisure time, Dr. Amin enjoys golf, travel and spending time with his family.
Education, Training, and Experience
- 1984: King Edward Medical College (Lahore, Pakistan) — Bachelor of Medicine and Bachelor of Science (MBBS)
- 1989: University of Punjab (Lahore, Pakistan) Master of Pharmacology (MPhil) (Lahore, Pakistan) Intern, Internal Medicine
- 2000-2003: Aurora Sinai Medical Center (Milwaukee, WI) — Resident, Internal Medicine
- 2003-2005: St. Louis University Hospital (St. Louis, Missouri) — Nephrology Fellowship
Certifications
- Board Certified in Internal Medicine, 2003
- Board Certified in Nephrology, 2005
- ECFMG Certificate: 0-604-820-1
- Fellow of the American Society of Nephrology
Professional Experience
- 2005-present: Private practice — Milwaukee Nephrologists, S.C. (Milwaukee, WI)
Special Focus
- General Nephrology
- Transplant Nephrology
- Hemodialysis Peritoneal Dialysis and CRRT
- Bone and Mineral Metabolism
- Vascular Calcification
Andrew J. Olafsson, MD

Andrew J. Olafsson, MD
In his leisure time, Dr. Olafsson enjoys sports (basketball, football, golf, tennis) and traveling.
Education, Training, and Experience
- 2000: University of Wisconsin-Madison — BS in Molecular Biology
- 2004: University of Wisconsin Medical School (Madison, WI) — MD
- June 2004 — June 2007: University of Wisconsin Hospitals and Clinics — Internal Medicine Residency
- July 2007 — June 2009: University of Iowa Hospital and Clinics — Fellowship, Division of Nephrology
Certifications
- Board Certified in Internal Medicine, 2007
- Board Certified in Nephrology, 2009
Professional Experience
- July 2009 — Present: Private Practice with Milwaukee Nephrologists, SC (Milwaukee, WI)
- December 2008 — June 2009: Hospitalist, Cogent/Genesis Health Systems (Davenport, IA)
Special Focus
- Prevention and Early Intervention of Chronic Kidney Disease
- Treatment of Hypertension in patients with Chronic Kidney Disease
- ICU Nephrology
Lisa M. Rich, MD

Lisa M. Rich, MD
In her leisure time Dr. Rich enjoys her family, pets, and playing the flute in the Waukesha Area Symphonic Band.
Education, Training, and Experience
- 1983: Marquette University (Milwaukee, WI) — BS
- 1988: Medical College of Wisconsin (Milwaukee, WI) — MD
- 1988-1991: Medical College of Wisconsin (Milwaukee, WI) — Internal Medicine Residency
- Medical College of Wisconsin (Milwaukee, WI) — Chief Medical Resident
- 1992-1994: Medical College of Wisconsin (Milwaukee, WI) — Nephrology Fellowship
Certifications
- Board Certified in Internal Medicine, 1991
- Board Certified in Nephrology, 1996
Professional Experience
- 1994-present: Private practice — Milwaukee Nephrologists, S.C. (Milwaukee, WI)
Special Focus
- Prevention and Early Intervention of Chronic Renal Disease
- Women with chronic kidney disease
Stephen G. Sievers, MD

Stephen G. Sievers, MD
In his leisure time, Dr. Sievers enjoys spending time with his family.
Education, Training, and Experience
- May 1980: Marquette University (Milwaukee, WI) — BS-Liberal Arts
- May 1984: Medical College of Wisconsin (Milwaukee, WI) — MD
- July 1984-June 1987: Medical College of Wisconsin (Milwaukee, WI) — Internship/Residency
- September 1989-September 1991: Medical College of Wisconsin and Affiliated Hospitals (Milwaukee, WI) — Nephrology Fellowship
Certifications
- Board Certified in Internal Medicine, 1989
- Board Certified in Nephrology, 1992
Professional Experience
- May 1996-present: Private practice — Milwaukee Nephrologists, S.C. (Milwaukee, WI)
- Nov. 1991-April 1996: Independent Practice in Nephrology (Milwaukee, WI)
Special Focus
- General Nephrology
Kevin P. Tucker, MD

Kevin P. Tucker, MD
In his leisure time, Dr. Tucker enjoys spending with family, martial arts and cooking.
Education, Training, and Experience
- 2001: Bachelor of Science in Social Work/Minor in Chemistry – Graduated Magna Cum Laude from University of Wisconsin-Milwaukee
- 2006: Doctor of Medicine – Medical College of WI
- 2006-2009: Internship/Residency in Internal Medicine – Medical College of WI
- 2009-2011: Fellowship in Nephrology – Medical College of WI
Certifications
- Board Certified in Internal Medicine, 2009
- Board Certified in Nephrology, 2011
- Completed all of his medical training through the Medical College and its affiliated hospitals where he was a multiple award winner for student excellence during his schooling/training including the James Cerletty Excellence in Medicine Award.
- Co-founder and past president of the American Medical Students Association (AMSA) during his undergraduate studies at the University of Wisconsin – Milwaukee.
Professional Experience
- 2011-Present: Private Practice with Milwaukee Nephrologists, S.C. (Milwaukee, WI)
Special Focus
- General Nephrology
- Prevention and Early Intervention of Chronic Kidney Disease
- Treatment of Hypertension in patients with Chronic Kidney
- Hemodialysis and Peritoneal Dialysis
Ajjampur R. Vidyaranya, MD

Ajjampur R. Vidyaranya, MD
In his leisure time, Dr. Vidyaranya enjoys spending time with his wife and four children.
Education, Training, and Experience
- 1981: Bangalore University (Bangalore, India) Bachelor of Medicine and Surgery (MBBS)
- June 1992-June 1993: The Lankenau Hospital — Affiliate of Thomas Jefferson University (Wynnewood, PA) — Internship in Internal Medicine
- July 1993-June 1995: The Lankenau Hospital — Affiliate of Thomas Jefferson University (Wynnewood, PA) — Residency in Internal Medicine
- November 1995-June 1998: University of Wisconsin Hospitals and Clinics (Madison, WI) Fellowship in Nephrology and Transplant Medicine
Certifications
- Board Certified in Internal Medicine, 1995
- Board Certified in Nephrology, 1998
Professional Experience
- August 1998-present: Private practice — Milwaukee Nephrologists, S.C. (Milwaukee, WI)
Special Focus
- General Nephrology
- Minor Surgery — Nephrology patients
- Transplant Nephrology: evaluate, select and prepare candidates for kidney transplant and provide follow-up care
Our Staff

Staff Directory
St. Luke’s Health Science Building
- Manohar Ahuja, MD, MBBS, MRCP
- Ahmed Malik, MD, MPHIL, FASN
- Kevin P. Tucker, MD
- Matthew H. Hanna, MD
- Ajjampur R. Vidyaranya, MD
- Andrew J. Olafsson, MD
- William C. Elliott, JR. MD
Green Bay Road Office Building
- Manohar Ahuja, MD, MBBS, MRCP
- Matthew H. Hanna, MD
- Kamal Amin, MD
- Stephen G. Sievers, MD
- Lisa Haller, MD
Wisconsin Heart Hospital Bldg
- Manohar Ahuja, MD, MBBS, MRCP
- Kamal Amin, MD
- Ahmed Malik, MD, MPHIL, FASN
- Kevin P. Tucker, MD
- Lisa Haller, MD
- Lisa Rich, MD
- Ajjampur R. Vidyaranya, MD
- Andrew J. Olafsson, MD
- William C. Elliott, JR. MD