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32 providers
Availability last updated 07/24/2026
Jamie Coffey, DPM
Podiatrist
2550 E Guadalupe
Ste 106
Gilbert, AZ 85234
Dr. Thomas Chambers, DPM
Podiatrist
1114 S Higley Road Ste 101
Mesa, AZ 85206
Dr. Richard Rand, DPM
Podiatrist
7400 E Osborn Rd
Scottsdale, AZ 85251
Dr. Yehia Elebrashi, DPM
Podiatrist
7400 E. Osborn Road
Scottsdale, AZ 85251
Dr. Crenshaw completed his Podiatric Medicine and Surgery Residency with Reconstructive Rearfoot and Ankle certification (PMSR/RRA) at Mount Auburn Hospital, a Harvard Medical School teaching affiliate. During his time in Boston, he held concurrent appointments at Tufts Medical Center and Elliot Hospital in Manchester, NH. He served as a Clinical Fellow in Surgery at Harvard Medical School.
A native of Arizona, Dr. Crenshaw earned his Doctor of Podiatric Medicine from the New York College of Podiatric Medicine, where he was elected Student Government President and received numerous honors for academic excellence, leadership, and research. He also holds a Master of Science and a Bachelor of Science in Biology from Arizona State University.
An accomplished researcher, Dr. Crenshaw has authored multiple peer-reviewed publications and presented nationally on topics including total ankle arthroplasty, minimally invasive bunion correction, and infection risk in elective foot and ankle surgery. He has received several awards at ACFAS and institutional scholarly events for his research contributions. He serves as a peer reviewer for the Journal of Foot and Ankle Surgery and previously held the role of Resident Research Director at Mount Auburn Hospital. His professional affiliations include the American College of Foot and Ankle Surgeons and the American Podiatric Medical Association.
Dr. Crenshaw is passionate about advancing surgical techniques that prioritize function, long-term outcomes, and patient-centered care
Keith Crenshaw, DPM
Podiatrist
7301 E. 2nd Street
Ste 206
Scottsdale, AZ 85251
Daniel Kiddy, DPM
Podiatrist
2375 E.
Camelback Rd Suite 600
Phoenix, AZ 85016
Dr. Mark T. Lewis was born in Knoxville, Tennessee and raised in Southern California. He graduated from The University of California, San Diego. He earned a Bachelor of Arts degree in Biochemistry and Cell Biology in 1990. The next two years he worked as a research assistant in Immunopharmacology at one of the leading Cancer Research Centers in the United States. After spending the next year working in the private sector at a pharmaceutical company, Dr. Lewis enrolled in Podiatry school in 1993.
He received his Doctrate of Podiatric Medicine from the California College of Podiatric Medicine in 1997. Dr. Lewis completed 4 years of residency training in reconstructive foot and ankle surgery: two years at The Veterans Administration Hospital in West Los Angeles and two years at The Franciscan Foot and Ankle Institute in Seattle. He served the role of chief resident at both residencies.
Dr. Lewis trained with both podiatric and orthopedic surgeons during his residency. He was fortunate to be able to travel internationally to the Philippines and Mexico to perform surgical treatment of complex deformities to the citizens of these countries. After graduating from his residency, Dr. Lewis remained very active in academics and residency training of both podiatric, osteopathic, and allopathic residents. He participated on the residency training committee for many years and was awarded multiple times the instructor of the year award by the residents he trained.
After residency, Drs. Mark and Petrina Lewis founded Northwest Foot and Ankle Center, PS and provided conservative and surgical treatment as members of a large Orthopedic Surgery Practice in Renton, Washington. After leaving the orthopedic practice in 2005, Dr. Lewis continues to practice in Renton focusing on conservative and surgical management of foot and ankle problems. He has a particular interest in podiatric biomechanics, orthotics, sports medicine, heel pain, and regenerative medicine.
Dr. Lewis is Board Certified by the American Board of Foot and Ankle Surgery. He is a fellow of the American College of Foot and Ankle Surgeons. He is an active member of the American Podiatric Medical Association and the Washington State Podiatric Medical Association.
We are grateful to announce that in July 2019 we opened a second office at 9399 Ridgetop Blvd NW in Silverdale, Washington. Dr. Craig Clifford has joined Northwest Foot and Ankle Center, PS and will be based in the Silverdale office.
“ We pride ourselves in punctuality, transparency, and innovation. Most importantly we want to provide our patients with pain relief as quick as possible. We have created a family atmosphere where all patients know what they can expect in relation to their insurance at each visit. We preauthorize all potential services and share that information with our patients in advance of those services. We have the most modern equipment and innovations to treat our patients. We have orthotic technology developed by Hewlett Packard called Fit Station. We have the ability to utilize 3D printing technology. It is revolutionizing the custom prescription orthotic space with its precision. We have dedicated orthotic labs in each of our offices in which we can perform complete gait analysis and orthotic evaluation. We are also very excited to offer Mutli-Lock-System Robotic Laser treatments (MLS) for both acute and chronic inflammatory conditions.”-Dr. Lewis
Outside of work, I love spending time with my family. Petrina and I have three children: Zach, Nick, and Alexa. I am an entrepreneur at heart and I love serving as a mentor to others who are passionate in their pursuits of their personal goals. I also can be frequently found cooking meat on my Traeger Wood Pellet Smoker. I look forward to the opportunity to getting to know you and help you lead a pain free, healthy , and active life!
EDUCATIONBoard Certified Foot Surgery, American Board of Podiatric Surgery, 2005
Podiatric Surgical Residency (PSR-24) , Franciscan Foot and Ankle Institute, 1999-2001
Podiatric Surgical Residency (PSR-12), Veterans Administration Hospital, West Los Angeles, 1998-1999
Rotating Podiatric Residency, Veterans Administration Hospital, West Los Angeles, 1997-1998
Doctor of Podiatric Medicine, California College of Podiatric Medicine, San Francisco, CA 1997
Bachelor of Arts, Biochemistry and Cell Biology, University of California, San Diego (UCSD) 1990
Valley Medical Center
Franciscan Health Services-St. Francis Hospital
Auburn Regional Medical Center
Harrison Medical Center
American Podiatric Medical Association
Washington State Podiatric Medical Association
Fellow of the American College of Foot and Ankle Surgeons
Diplomat of the American Board of Podiatric Surgery
Dr. Mark Lewis, DPM
Podiatrist
9343 E Shea Blvd
Suite 130
Scottsdale, AZ 85260
Marta Riniker, DPM, is a fellowship-trained and board certified foot and ankle surgical podiatrist, serving patients at Phoenix Foot and Ankle Institute's Phoenix, AZ location.
Prior to her career in podiatry, Dr. Riniker attended the University of Minnesota in the Twin Cities where she obtained a Bachelor of Science in Nutrition Science, laying the foundation for a comprehensive understanding of human health. She went on to study at Temple University School of Podiatric Medicine where she was a member of the Pi Delta Honors Society and graduated in 2014. She then completed a rigorous three-year foot and ankle surgical residency in Portland, Oregon, honing her skills in foot and ankle surgery. Following residency, she furthered her training by pursuing a one-year fellowship in advanced foot and ankle reconstruction, relocating back to Pennsylvania. She practiced in the Santa Fe area of New Mexico and in Tucson before relocating to Phoenix to join Dr. McAlister at Phoenix Foot and Ankle Institute. Her extensive training prepared her to be able to treat all aspects of foot and ankle conditions, but she takes a particular clinical and surgical interest in sports injuries, foot and ankle fractures, strains and sprains, acute and chronic foot and ankle pain, wound care, and foot and ankle deformity correction.
Outside of work, Dr. Riniker has many interests and hobbies including hiking, yoga, running, going to the gym, camping, traveling, and exploring new restaurants and coffee shops in town. She is a dog mom to an adorable Pomeranian who joins her on a lot of her adventures.
Dr. Riniker is committed to delivering the highest quality care to her patients. She places great importance on a team approach, developing a treatment plan together with her patient that is individually tailored to each person’s specific goals and needs. She takes a conservative approach to foot and ankle care whenever possible by employing non-invasive treatments and preventive strategies. However, when appropriate, surgery may be the best course of action for the desired treatment outcome. Dr. Riniker is highly skilled and well-trained in surgical procedures and will recommend surgery when it is the best and necessary course of action to provide you with the highest level of care.
Dr. Marta Riniker, DPM
Podiatrist
6707 N 19th Ave
Suite 103
Phoenix, AZ 85015
Tawnya Pfitzer, DPM, is an experienced podiatrist specializing in foot and ankle health for the entire family. Whether she’s treating an infant or an adult, Dr. Pfitzer offers a wide range of services at Desert Canyon Foot & Ankle in Avondale, Arizona, where she’s known for her kind and gentle touch.
After receiving her undergraduate degree from the University of Arizona, where she was a member of the honors college and attended on a Presidential Scholarship, Dr. Pfitzer graduated with honors from the California College of Podiatric Medicine in San Francisco. She completed a surgical residency at Northridge Hospital in Van Nuys, California, and has studied both the general practices of medicine and surgery.
Her interests include biomechanics, sports medicine, and pediatrics, and she has extensive training in diagnosis, management, and surgical treatment of both chronic and acute issues.
In addition to her practice, Dr. Pfitzer currently trains podiatry students from Midwestern University in Glendale, California. She lives locally with her husband and two daughters.
Dr. Tawnya Pfitzer, DPM
Podiatrist
13065 West McDowell Road
Suite C-101
Avondale, AZ 85392
Meet Goodyear, AZ's Friendly Foot Doctor!
Samuel W. Cox Jr., DPM, is a third-generation podiatrist who’s been practicing podiatric medicine and foot and ankle surgery since 1992. Dr. Cox is committed to providing the highest-quality medical and surgical care for patients of all ages at Arizona Foot & Ankle Specialists, LLC in Goodyear, Arizona.
Dr. Cox is double board certified by the American Board of Foot and Ankle Surgery and the American Board of Podiatric Medicine. He’s also a fellow of the American Professional Wound Care Association and the American College of Foot and Ankle Surgeons.
After graduating from Ohio College of Podiatric Medicine, now known as the Kent State University College of Podiatric Medicine, Dr. Cox went on to complete a three-year medical and surgical residency program. His training focused on medicine as well as reconstructive surgery of the foot, ankle, and lower leg. He’s been a member of the American Podiatric Medical Association (APMA) since 1991.
In addition to treating common injuries such as foot and ankle fractures and sprains, Dr. Cox provides comprehensive care for the full spectrum of podiatric concerns, including toenail fungus and bunions. With the goal of providing prompt and effective treatment, Dr. Cox looks forward to helping new and existing patients return to their normal lives as soon as possible.
Dr. Samuel Cox, DPM
Podiatrist
2970 N Litchfield Rd
Suite 120
Goodyear, AZ 85395
Dr. Usman Urooj is a Board Certified Foot and Ankle Surgeon in Goodyear, Arizona.
Dr. Urooj’s passion for medicine began during his high school years. His love for science took him to the University of North Texas, where in 2014, he earned his Bachelor of Science degree in Biology and graduated with honors. Then in 2018, he earned his Doctor of Podiatric medicine and surgery degree at Arizona College of Podiatric medicine-Midwestern University in Glendale, Arizona.
Upon graduation, Dr. Urooj matched at Carl T. Hayden Veterans Medical Center for his residency training in Foot and Ankle medicine and surgery. At this institution his residency training consisted of inpatient, outpatient, clinical, and surgical experiences. He completed many different rigorous medical and surgical rotations for an overall comprehensive experience. Some notable rotations during his time in the program included internal medicine, infectious diseases, emergency medicine, general surgery, vascular surgery, plastic surgery, and orthopedic surgery. In addition to the above rotations, he was exposed to significant volume of foot and ankle medical and surgical pathologies. He also participated in an extensive volume of foot and ankle surgical care during the entire duration of his residency.
In the last year of his residency program, Dr. Urooj was selected for the chief resident position and was presented a chief resident award upon graduation. He graduated from his residency program in June 2021. He graduated with the highest surgical case volume in his graduating class, which also exceeded the program requirements. During his residency experience, he had multiple published articles on different medical and surgical treatments of foot and ankle.
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Dr. Usman Urooj, DPM
Podiatrist
2970 N Litchfield Rd
Suite 120
Goodyear, AZ 85395