Meet Our Team

Dr. ChallaDr. Shekhar Challa, M.D.

Dr. Shekhar Challa is board certified in internal medicine and gastroenterology. He has been in private practice for over 27 years as the President of Kansas Medical Clinic, which is a multi-specialty clinic with offices in Topeka, Lawrence and Kansas City. He is also the president of Osteoporosis Services, a mobile bone density company. Dr. Challa is an award winning author of: Probiotics For DummiesWinning the Hepatitis C Battle, Spurn the Burn Treat the Heat: Everything You Need to Know to Beat Acid Reflux Disease, and Ganele La Batalia A La Hepatitis C (Spanish).

Dr. Challa has also served as a member of several boards including: West Central Osteoporosis Board, U.S. Bank,, and AMSURG. He has been interviewed for his expertise by many radio and television programs and in print by such top publications as “Prevention Magazine”, “Bicycling Fitness Magazine”, “Yoga Magazine”, “Real Simple Magazine”, “More Magazine” and more (for a complete list go to

After attending a probiotic convention in Rome and not one speaker was from the United States, Dr. Challa felt the need to write Probiotics For Dummies and in addition, go further by coming up with an ideal probiotic – that’s how Probulin was born.

Jason MitchellJason Mitchell, N.D.
Chief Executive Officer

Dr. Jason Mitchell grew up in the Natural Products Industry and being exposed at such a young age to the value of healthy eating and natural living has shaped his ideology on living a higher quality of life.  Dr. Mitchell has spent the last 15 years of his professional career developing over 200 industry leading dietary supplements.  Before becoming the Chief Executive Officer for Probulin® and its family of companies he was most recently the Chief Science Officer and one of the managing executives for Country life Vitamins, a 40+ year old,  very successful supplement manufacturer located in the Long Island area of New York State.

Dr. Mitchell is a board certified Naturopathic Doctor and member of the American Naturopathic Medical Association as well as a member of the Certified Natural Health Professionals.  He is also a proud Alumni of Arizona State University, “Go Sun Devils”!

Dr. Mitchell prides himself on using only the finest ingredients that are Non-GMO, Wheat and Gluten Free, Dairy Free, Soy Free, and free of unnecessary additives such as Magnesium Stearate artificial colors, flavors and sweeteners.  All Probulin® products follow this important ideology.  Safety and Health is our first priority.

akhilapicAkhila Challa

Akhila Challa is what we in the industry like to call a doctor that has gone rogue. She went to medical school, but along the way realized that business was her calling. With her father, they created NutraCenter. NutraCenter’s goal is to research and develop innovative products from natural sources to help people build a better and healthier quality of life. During the process of researching and developing these nutraceuticals, Akhila and Dr. Challa noticed there was a need for more quality probiotics, therefore, Probulin was born. Akhila is the brain behind the product name, Probulin.

Akhila enjoys traveling, volunteering with San Francisco organizations like Spark, Oasis for Girls, & SFWAR as well as cooking, spending time with family & friends, and occasionally a visit to the bowling alley. She likes to watch Jayhawk basketball!

CoriWegnerCori Wegner
Director of Sales

Cori started at Probulin as the Director of Sales in 2010. She has worked with the Founder of Probulin, Dr. Shekhar Challa, for almost 2 decades running several of his mobile medical companies. She currently plays dual roles and oversees Osteoporosis Services PA, the largest mobile bone density company in the Midwest.

She graduated from Kansas State University, Manhattan KS, with a degree in communications. Cori’s favorite part about working with the team at Probulin, is hearing the testimonials from patients and customers in which Probulin has changed their lives. When Cori isn’t working at the office with the Probulin team, you can usually find her at college sporting events with her daughter Madison, riding 4 wheelers with her son Jacob, or feeding her 28 goats with her husband Bob.

She is very active in the community and school at Silver Lake. She currently serves as Vice President of her high school booster club and a member of the public school foundation.

Anna Matile
Marketing Director

Anna started at Probulin as a marketing and social media specialist in 2012 and fell in love with the mission of the company. While in college at Washburn University in Topeka, Kansas, Anna started her own advertising and design company as her passion was to help small businesses develop and launch their brand.  Her marketing background and creativity lead her to become the Probulin Marketing Director.

When Anna isn’t designing, emailing, facebooking, tweeting, pinning, blogging or networking, she is spending time with her daughter Ainsley and husband Brent, eating Kansas City BBQ with her family, running, playing tug-of-war with her puppy Bear, or rooting for the Kansas Jayhawks!  She has competed in 4 half marathons, as well as many 5k/10k’s, and plans on running many more.

Buddy Ojeda, CN
East Coast Educator

Buddy Ojeda is a Certified Nutritionist, health educator, public speaker, author, radio broadcaster and President of Training Solutions on Demand. He’s worked in the natural products industry for over two decades in both retail and supplement manufacturing.

During this time he developed and presented educational seminars and trainings in the U.S., Puerto Rico and Canada, on a variety of topics related to health and wellness. Buddy has held key positions of responsibility with industry-leading organizations including MegaFood, Pure Essence Labs, Garden of Life, Health From the Sun and Whole Foods Market.

In 2009 he founded Training Solutions on Demand, an education and consulting services company with an emphasis on the dietary supplement industry.

Buddy and his family currently reside in South Florida.

HallHi-resValerie Hall, CNHP
West Coast Educator

Valerie Hall is a Certified Natural Health Professional and Nutritional Consultant. Her enthusiasm and passion for natural health have made her a popular speaker to thousands of health seeking individuals each year. She is the host of her own radio show in Southern California; Gateway to Vibrant Health.