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About Quivira Internal Medicine

Quivira Internal Medicine is part of the HCA Midwest Physicians network in Kansas City. The offices of Quivira Internal Medicine are located on the east side of Quivira Road, near Overland Park Regional Medical Center. With over 30 years at this location, our experienced physicians and staff are here to serve our community. We take same day appointments and can accommodate new patients.

Quivira Internal Medicine is located in the Johnson County area with 9 physicians. Our practice consists of 9 internists and 4 nurse practitioners. All of our physicians are board-certified*. In addition to our in-house laboratory, Quivira Internal Medicine has the ability to administer and interpret the following capabilities on-site:

  • Aorta and Bladder Scanning
  • Bone Densities (DEXA)
  • Diabetic Education
  • Full X-rays
  • Glucose Testing
  • Spirometry- (PFT )

Quivira Internal Medicine focuses on full comprehensive physical examinations and dedicates itself to staying on the cutting edge of medical technology and therapeutics. Therapeutic areas include diabetes, hyperlipidemia (cholesterol), hypertension, osteoporosis and infectious disease.

Quivira Internal Medicine is part of the HCA Midwest Physicians network in Kansas City. We are affiliated with Overland Park Regional Medical Center as well as the hospitals of HCA Midwest Health.

Please call (913) 541-3340 to schedule an appointment, or make an appointment online at your convenience. For cancelations, please provide a 24-hour notice.

Tell Us About Your Experience


New Patients and Medicare Patients

Quivira Internal Medicine is enrolled and servicing our existing Medicaid patients but we are not taking new Medicaid patients at this time.

Providers no longer taking new patients: Lawrence Riffel, MD | George Stamos, MD

Providers no longer taking new Medicare patients: Michelle Lester, MD | Lawrence Riffel, MD | Vijaya Samuel, MD | George Stamos, MD

Kaitlin Beggs, FNP

Kaitlin Beggs, FNP
Kaitlin Beggs, APRN FNP-C, is a board-certified nurse practitioner with a strong background in cardiology and critical care. She is passionate about health promotion and disease prevention. Kaitlin works collaboratively with the physicians at Quivira Internal Medicine to treat both acute and chronic illnesses. Kaitlin is native to Kansas City and earned her Master’s Degree of Nursing from the University of Kansas.   More


Michael Fomby, DO

Michael Fomby, DO
Michael Fomby, DO, is board certified in Internal Medicine. He is a native of Texas, who moved to Overland Park in 2014 to be closer to family. He earned his Bachelor of Arts in Biology at the University of Texas at Austin and his Doctor of Osteopathy at the University of North Texas Health Sciences Center - Texas College of Osteopathic Medicine. He completed his residency in Internal Medicine in Corpus Christi, Texas, where he also served as Chief...   More

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Kalpana Gorthi, MD

Kalpana Gorthi, MD
Kalpana Gorthi, MD at Quivira Internal Medicine, is a board-certified internist with strong experience as a hospital-based physician delivering care to admitted patients. Dr. Gorthi has received recognition for her skills in internal medicine and for her excellent care of geriatric patients and she has donated substantially of her time and expertise to the community. Dr. Gorthi has served in leadership roles including a term as a member of the Resident...   More

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Lori Knudtson, NP

Lori Knudtson, NP
Lori Knudtson MSN, ARNP, FNP-C, CDE, is a board-certified Family Nurse Practitioner and is also a Certified Diabetes Educator. Lori manages patients with acute health problems and works in collaboration with the Quivira Internal Medicine physicians in the management of chronic health conditions. She has a particular interest in diabetes education and management. Lori received her Bachelor of Science in Nursing degree from Baker University and graduated...   More

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Cypress LaSalle, NP

Cypress LaSalle, NP
Cypress La Salle, MSN, APRN, FNP, is a board-certified family nurse practitioner with a strong background in chronic disease management, health promotion, preventive medicine, and women's healthcare. Cypress partners closely with the physicians at Quivira Internal Medicine to care for patients, managing both acute problems and chronic diseases. She received her bachelor's in nursing from the University of Florida and completed a master's at the...   More

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Michelle Lester, MD

Michelle Lester, MD
Dr. Michelle R. Lester joined the medical practice of Quivira Internal Medicine and is now part of the active medical staff at Overland Park Regional Medical Center. Dr. Lester, a major in the US Air Force, was medical director at Lackland Air Force Base in San Antonio, Texas. Dr. Lester joins the long tradition of providing accessible, quality healthcare established by Quivira Internal Medicine: specializing in the prevention and treatment of adult...   More

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Debra Morris, NP

Debra Morris, NP
Debra is a board certified adult/geriatric nurse practitioner and works in collaboration with the Quivira Internal Medicine physicians. She has a special interest working with geriatric patients as well as managing chronic health conditions. Debra received a bachelor ' s degree in nursing from Washburn University. She graduated from the University of Kansas with a master ' s degree in nursing.   More

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Benjamin Petelin, DO

Benjamin Petelin, DO
Dr. Benjamin Petelin, a native Kansan, is a board certified internist with clinical interests in preventive healthcare, hypertension, hyperlipidemia, diabetes, and obesity. Dr. Petelin received his medical degree from Kansas City University of Medicine and Biosciences. He completed his internship and residency in internal medicine at the University of Kansas and is currently a member of the American College of Physicians.   More

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Lawrence Riffel, MD

Lawrence Riffel, MD
Dr. Riffel is a Kansas native and has practiced internal medicine in Overland Park since 1981. He received his BS from Kansas State University and his MD from the University of Kansas. He completed a three-year internal medicine residency program at the University of Iowa before returning to Overland Park to practice. He is active in the Johnson County Medical Society and has served as its president. He has served on the hospital Board of Governors...   More

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Vijaya Samuel, MD

Vijaya Samuel, MD
Dr. Vijaya Samuel is an internist who went to medical school at the University of Madras, India. Prior to residency, Dr. Samuel did a year of research at Mt. Sinai Hospital, New York. She did her post-graduation at University of Syracuse and at the University of Nevada School of Medicine. Dr. Samuel was then an associate professor at the University Medical Center in Nevada and subsequently moved to ambulatory care at the University. Dr. Samuel was...   More

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George Stamos, MD

George Stamos, MD
Dr George Stamos is a board-certified, internal medicine physician who has been practicing medicine in the Kansas City area for more than 35 years. He graduated from the University of Iowa School of Medicine, completed his residency in internal medicine at St. Luke's Hospital in Kanas City and is a fellow of the American College of Physicians. Dr. Stamos is one of the original founders of Quivira Internal Medicine, formerly the Kenyon Clinic. He...   More


Shazia Walijan-Munir, MD

Shazia Walijan-Munir, MD
Dr. Shazia Walijan-Munir has recently moved to Kansas City to be with her family after being in Pittsfield, Massachusetts where she practiced internal medicine at Community Health Programs Incorporated. Dr. Walijan-Munir graduated from DOW University of Health Sciences, Pakistan where she was a primary care physician for three years in Karachi, Pakistan. Dr. Walijan-Munir then came to the states to pursue further education and training. She did a ...   More

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Patient-Centered Medical Home Recognized PracticeThe patient-centered medical home is a model of care that emphasizes care coordination and communication to transform primary care into “what patients want it to be.” NCQA Patient-Centered Medical Home (PCMH) Recognition is the most widely adopted model for transforming primary care practices into medical homes. Patients in medical homes receive the right care, in the right amount, at the right time. This increasingly popular delivery system modernization leads to safer and better care, empowers patients and renews the patient-provider relationship.

Office hours at Quivira Internal Medicine
Mon-Fri 8-5, Sat-Sun Closed

Map and Locations

Quivira Internal Medicine

10601 Quivira Rd., #200
Overland ParkKS 66215

Fax: (913) 492-7857