About Signature Internal Medicine

Concierge Internal Medicine located in Frisco, TX

About Signature Internal Medicine

Signature Internal Medicine is a superior concierge internal medicine practice in Frisco, Texas, led by Humera Ahmed, MD, and Dina Diehl, DO. The skilled providers offer comprehensive primary care services for men and women 18 and older.

Signature Internal Medicine offers 24/7 access to physicians any time patients need them. Providers spend as much time as patients desire to ensure exceptional care, so appointments never feel rushed.


  • 24/7 access to a physician
  • More time spent with providers
  • Little or no office wait times
  • Exceptional primary care
  • Superior results
  • Comfortable, friendly environment
  • Improved disease management
  • Early disease detection
  • Cutting-edge diagnostics and treatments
  • Same-day or next-day appointment availability 
  • Personalized attention
  • Specialist referrals 
  • Coordination of follow-up care 
  • White glove service 

Annual membership: individual $3000/year, couples $5000/year. This fee is not covered by insurance. Our annual membership covers these practice benefits. We accept most insurances for medical visits, labs, and diagnostic testing if applicable. You may request a complimentary meeting with one of our providers to see if they are right for you.

Well-trained, experienced physicians at Signature Internal Medicine specialize in preventive health care, annual physicals, comprehensive internal medicine services, and more.

The practice provides exceptional concierge medicine, which is a newer approach to healthcare in which your primary care physician limits the size of the practice. This allows them to spend more time with patients and deliver the personalized attention they deserve.

Along with 24/7 access to your provider, concierge medicine provides same-day or next-day appointments with little to no office wait times. Your Signature Internal Medicine provider focuses on patients’ unique needs, tailoring treatment plans just for them.

The highly-trained providers care for patients with diabetes, chronic obstructive pulmonary disease (COPD), high cholesterol, hypertension, osteoporosis, gastrointestinal reflux disease (GERD), and mental health conditions. 

Signature Internal Medicine offers medical weight loss, chronic disease, and acute illness management, prescription medicines, cancer screening, smoking cessation, on-site diagnostic testing, and much more. The internal medicine providers work and communicate closely with specialists, referring patients to them when necessary.

The Signature Internal Medicine specialists warmly welcome their patients to the practice and look forward to caring for them. 

Call the office or use the online booking tool today to schedule an appointment at Signature Internal Medicine.