Health care arrangements across the world vary wildly, of course. In the USA, it seems as there's a DIY approach to choosing which doctor, dentist, etc. to approach. Which is where GoodDoc UWP comes in, with surprisingly good Windows 10 integration, from Cortana to Continuum to Bing Maps compatibility. 

From the Store description:

Searching for a good trustworthy doctor shouldn't be difficult ! Whether you are at home, or away on vacation, there are times when you need to lookup a good doctor in your area quickly, efficiently and most importantly, find a trustworthy doctor for you or your family anywhere across the country.

Look for a top rated doctor anywhere in the USA. Search for tens of thousands of dentists, family practices, ophthalmologists or a specialist in any field by location, education, detailed bios, insurances accepted or any criteria.

• Top Rated and Reviewed - we show all doctors by their validated ratings to give you the top doctors anytime.
• Universal Windows platform - works on Phone, Tablet or Windows desktops and syncs your data across your devices.
• Secure and Validated Access - Authenticated logins only for more security of your health data.We plan to add 2-factor authentication as well soon.
• Cortana enabled - quickly search for a pediatrician or your favorite doctor using voice only
• Bing Maps integrated - see exact location of any practice and distance from you and get driving directions to your doctor easy and fast.
• Offline Access - Save your favorite doctor info for offline access anytime you need it.
• Helpful Medical Information Base - Real time CDC Alerts built in.
• Allows to save your health insurance data in the app - for that one place to go to and search for your insurances.

Some screenshots of GoodDoc in action on a Windows 10 Mobile handset:

All the furniture of a well-stocked UWP app is here, this looks superb - though we're in the UK, so can't vouch for any of its results or efficacy!

Looking into a medical professional's details and, right, browsing through the comprehensive categories available.

Having found the right candidate, it's time to place a call from the UWP application; (right) GoodDoc has your preferences and personal data kept behind the Windows Hello authentication built into Windows 10 Mobile devices.

You can buy GoodDoc here in the Store if you live in the USA.