If you are an employee and receive a W-2 for your employment as a pharmacist, then the employee business expenses are no longer deductible on a federal tax return due to the tax code changes for tax years 2018 thru 2015.
If you are a self-employed pharmacist then the vehicle mileage is a business expense that can be reported on a tax return.
Are you a W-2 employee or an independent contractor? If you are a W-2 employee the mileage is not deductible on your federal return. If you are an independent contractor it goes on your Schedule C with any other business expenses you had.