clinician, electrician, musician, and magician
politician
Optician is one example.
Some examples of words with the suffix -ician include physician, politician, technician, and musician.
It's not a real suffix, you know. The real suffix is "ian" meaning a person from or connected to a place or activity or party. An Egyptian is a person from Egypt (Egypt+ian). A Christian is a person who follows the religion of Christ (Christ+ian). A musician is someone who plays music (music+ian). Probably the most widely used of these words is politician (politic+ian). By analogy to this word, people divided the word wrong as polit+ician, and treated -ician as a suffix in such relatively new words as mortician (mort+ician), or beautician (beaut(y)+ician). Similar misdivisions have created the suffix -aholic, as in "shopaholic" from a misdivision of alcoholic as alc+oholic rather than the correct alcohol+ic.
The suffix -ician is best linked to the medical doctor
Musician, magician, physician, mortician, phoenician, electrician, mathematician, dietician... everything that ends with -ician :) Simply search for *ician in an online dictionary.
A specialist of a particular subject
The suffix of the word "magician" is -ian.
Electrician, Mortician, Beautician, musician, technician...
Practitioner
words that end in wh
None. Words end with a suffix.