A board certified physician is usually referred to as "Doctor Whateveryourlastname." Board certification does not earn one another title, it is only a test of knowledge.
Internists are physicians trained and board certified in Internal Medicine. Primary care physician is a Physician who is primarily responsible for your medical care, he/she can be trained in Family Practice, Internal Medicine, for children this would be a pediatrician, women in reproductive age group may consider an Ob/Gyn to be their primary physician.
The best advice would be to see a board certified (ask them) headache specialist who is specially trained in the diagnosis and management of headache disorders. Headache and nausea are symptoms and can indicate any of hundreds of things going on that may or may not need to be addressed. Only a physician who is familiar with your history will be able to help you appropriately.
After residency and any fellowship training, an Emergency physician is considered Board Eligible. This means he or she is eligible to take the next round of certification exams. Depending on the accrediting body of the residency (AOA or ACGME), the Board Eligible physician takes a specific set of board exams. For ACGME residency graduates, they are Board Certified under the American Board of Emergency Medicine (ABEM). They take a written exam and an oral examination. If they perform well enough to pass both exams, they are then Board Certified for a period of 10 years from the date of initial certification. When that certification expires, they may retake a written board exam and remain board certified, provided they have also performed all the requisite Continuing Medical Education (CME) and LifeLong Learning Assessment (LLSA) tests in the interim years. For AOA residency graduates, they are Board Certified under the American Osteopathic Board of Emergency Medicine (AOBEM). They take a written exam, and oral exam, and after those are passed, must submit 20 charts for peer review. Once that is complete and all steps passed successfully, they are Board Certified for a period of 10 years, to be recertified every 10 years, after completing all AOBEM required CME and COLA (Continuous Osteopathic Learning Assessment - the AOBEM version of the LLSA).
A physician assistant is not a medical doctor, but some may have doctorates and be addressed as "doctor," just as some linguists and physicists are called "doctor."
LPNs and RNs are considered to be Basic Certified and must be CPR certified, although much past the basic First Aid cert focuses on actual first responder work, which may or may not apply to or be trained by a nurse. CNA's may or may not be certified, based on the board requirements for their locale and their training (FC courses may be part of the training).
You could consider calling the overseeing agency (e.g. State Board of Medicine for a physician or physician assistant, State Board of Nursing for nurses). There may also be implications for insurance reimbursement.
If you can pass the exam in your state you may be able to be certified without returning to school. I would expect that you may want to consider a checking with your nursing board to be sure you have all of the requirements to take the exam.
There are many reasons you may suffer headaches every day. There are literally hundreds of reasons that might pertain to your situation. Only a physician who specializes in headache disorders such as a board certified (ask them) headache specialist is probably qualified to help with the diagnosis and treatment of headache disorders such as this.
Effective board of directors should have many traits. Knowledge of the company, an understanding of policies, and the ability to listen to problems that may have to be addressed are key qualities of a member of a board of directors.
Symptoms of a cramping stomach and vomiting when having a bowel movement should be addressed by a physician. This may be a stomach virus or it may have a more serious meaning and should be evaluated.
A medical graduate can affix M.D. on his or her surname after successfully graduating from a medical school but cannot perform acts of medicine and be compensated unless under the guidance of a licensed physician. A practicing physician has passed the board of physician examination and has a license to practice acts of medicine. He or she may be a general or family physician or a specialist.
Forensic anthropologists typically need a graduate degree in forensic anthropology or a related field, as well as specialized training in skeletal analysis. They must have a strong understanding of human anatomy, decomposition processes, and taphonomy. Additionally, they often need experience working in a forensic setting and must be able to accurately document and analyze skeletal remains.