I work for a M.D. P.C. he has offered health insurance to our Physicians Assistant but won''t offer to the other employees .

As a general matter, an employer who offers a tax-qualified plan to employees needs to offer them on a non-discriminatory basis. However, there are many exceptions to covering all employees. For example, certain kinds of plans need ony be offered to employees of a particular class. Also, an employer may reimburse any employee for the cost of the employee's own personal plan. The exposure is to the employer for the possible loss of the tax deduction for premiums paid for a plan that turns out not to be tax-qualified. An employee who is not covered will generally not have the right to insist that he or she be covered.