Our Practitioners

Scott Hastings, DO

Board certified by the American Board of Family Medicine and active member of the Texas American Academy of Family Physicians and the Texas Medical Board

Dr. Hastings is passionate about affordable, research-based healthcare. He practices integrative medicine, which combines the best of traditional western medicine and well-researched alternative methods. He specializes in internal medicine, allergy treatment, prolotherapy, and osteopathic manipulation (similar to chiropractic treatments).

An entrepreneur at heart, Dr. Hastings pioneered one of the first Direct Primary Care (DPC) practices in the U.S. in 2008: Doctor’s Health Solution. He is now the founder of 7Health, which is a thriving DPC practice in Frisco, TX.

Dr. Hastings was named by Star Local Media as Frisco’s favorite allergist, and Family Medicine Plus was voted as one of the city’s favorite family practice clinics.

Dr. Hastings’ greatest passion is spending time with his wife and family. He enjoys composing and playing his own classical piano music, traveling, and doing humanitarian work with his family.


  • Bachelor of Science in Psychology, music minor, Brigham Young University
  • Doctor of Osteopathic Medicine, Kansas City University of Medicine and Biosciences
  • Residency and Internship with Fort Wayne Medical Education Program, Fort Wayne, Indiana

Yungrao “Grace” Craig, PhD, MPAS, PA-C

Texas Medical Board-certified Physician’s Assistant

Yingrao “Grace” Craig has been working with Dr. Hastings since April 2019 and has been practicing in the DFW area since 2012. She has worked in neurosurgery, neurology, headache/pain management, family medicine and urgent care.

She excels in multiple specialties, including pain management. Her skills include trigger point injection for intractable pain/muscle spasm, nerve block injection for intractable headache, BOTOX injection for migraine, joint injection, trigger finger injection, plantar fascitis injection, shave biopsy, incision and drainage, cryotherapy and suturing.

Growing up in China, Grace witnessed and experienced the great healing power of natural supplements and herbs. She looks forward to integrating her Asian upbringing with Western medicine to provide the best care to her patients.

Grace speaks fluent English and Mandarin Chinese. She enjoys travel, cooking, reading and tennis.


  • Bachelors of Science in Cell Biology, China
  • Masters in Physician Assistant Studies (MPAS), Massachusetts College of Pharmacy and Health Sciences in Boston
  • Certified physician’s assistant (PA-C), Massachusetts College of Pharmacy and Health Sciences in Boston
  • Doctorate of Pharmacology (PhD), State University of New York at Buffalo

Melanie Gray, DO

Certified by the Texas Medical Board and the American Osteopathic Board of Family Practice and Osteopathic and Manipulative Treatment

Dr. Gray had a family practice in Flower Mound, TX for five years and works on Mondays at the 7Health Frisco clinic. She also works at an integrated pain and wellness center in South Lake. 

Dr. Gray specializes in osteopathic manipulation treatments. She also has a long history with ballet and was a professional ballerina for four years with the Austin Ballet and the Texas Ballet Theater. She hopes to someday be a dance doctor for ballet dancers in the Dallas/Ft. Worth area.

Dr. Gray still continues to dance ballet, now with her daughter, and has become “a pretty avid soccer mom” for her son. 


  • Doctor of Osteopathic Medicine, Rocky Vista University
  • Residency at University of North Texas Health Science Center