18.5 Health Care Team Roles, Patient Navigation & Medical Specialties
Key Takeaways
- A consultation requests a specialist's opinion and returns care to the requesting provider, while a referral transfers responsibility for a portion of the patient's care to the receiving provider.
- The patient navigator role removes practical barriers — transportation, cost, scheduling, language, and record transfer — that prevent a clinically appropriate plan from actually happening.
- A medical assistant functioning as a health coach reinforces provider-established goals and teaches self-management skills but never sets the clinical target or changes a treatment plan.
- Closing the referral loop means tracking the referral until the consultant's report returns and is reviewed by the ordering provider; an untracked referral is a recognized source of patient harm.
- Routing a patient to the wrong specialty wastes an authorization and delays care, so knowing which organ system and age group each specialty covers is a practical daily competency.
The Ambulatory Care Team
| Role | Preparation | Ambulatory scope |
|---|---|---|
| Physician (MD / DO) | Medical school plus residency; state licensed | Diagnoses, prescribes, performs procedures, directs the plan of care |
| Nurse practitioner (NP) | Graduate nursing degree; national certification | Advanced practice; diagnoses and prescribes, with authority varying by state |
| Physician assistant / associate (PA) | Master's program; national certification | Diagnoses and prescribes under a collaborative or supervisory agreement |
| Registered nurse (RN) | Associate or bachelor's degree; NCLEX-RN licensure | Assessment, triage, care coordination, patient teaching, administration of medications |
| Licensed practical/vocational nurse (LPN/LVN) | Practical nursing program; NCLEX-PN licensure | Direct nursing care within a defined scope under RN or provider direction |
| Medical assistant (CMA, AAMA) | CAAHEP- or ABHES-accredited program; AAMA certification | Administrative and clinical tasks delegated by a licensed provider, within state-defined limits |
| Registered dietitian nutritionist (RDN) | Accredited dietetics program plus supervised practice; credentialed | Medical nutrition therapy and dietary counseling |
| Pharmacist (PharmD) | Doctor of Pharmacy; licensed | Dispensing, medication therapy management, interaction review |
| Social worker (LCSW/MSW) | Social work degree; licensed | Psychosocial assessment, community resource linkage, crisis intervention |
| Physical / occupational therapist (PT / OT) | Graduate degree; licensed | Mobility and functional rehabilitation |
Two boundaries define the medical assistant's place. Medical assisting is not a licensed profession in most states; the CMA (AAMA) is a voluntary national certification, and the legal authority to perform a clinical task derives from delegation by a licensed provider within state law. And a medical assistant does not assess in the nursing sense, triage independently, diagnose, or prescribe — those functions belong to licensed clinicians.
Consultation Versus Referral
| Consultation | Referral | |
|---|---|---|
| Purpose | Obtain an opinion or advice | Transfer responsibility for care |
| Who retains the patient | The requesting provider | The receiving provider, for that portion of care |
| Output | A written consultation report returned to the requester | The specialist assumes ongoing management |
The medical assistant's role is the same in both: verify the order and the diagnosis supporting medical necessity, obtain prior authorization when the payer requires it, transmit the pertinent records with a signed authorization, schedule and confirm the appointment, give the patient the address, date, time, and preparation instructions, and log the referral for tracking.
Closing the loop
A referral is not complete when the appointment is made. It is complete when the consultant's report has returned, been reviewed by the ordering provider, and been filed. Practices maintain a pending-referral log and work it on a schedule, because "the report never came back" is a well-documented source of missed cancers and delayed diagnoses — and a recurring malpractice allegation.
A primary care provider sends a patient to a cardiologist and asks specifically for an opinion about whether an arrhythmia requires further workup, intending to continue managing the patient afterward. How should the medical assistant characterize and process this request?
Navigator, Advocate, Case Manager, and Health Coach
These four functions are named in the content outline and overlap in practice, but they answer different questions.
Patient navigator — "what is stopping this from happening?" The navigator removes practical barriers between a clinically correct plan and its execution: arranging transportation, finding financial assistance or a patient assistance program for an unaffordable drug, sequencing appointments so a patient makes one trip instead of four, securing an interpreter, and chasing outside records. Navigation was developed in oncology precisely because complex plans fail on logistics rather than on medicine.
Patient advocate — "whose interest is being served?" The advocate ensures the patient's wishes, rights, and understanding are respected: confirming the patient actually understands before a consent is signed, relaying a concern the patient is reluctant to raise, protecting privacy, and escalating when something in the process is not working for the patient.
Case manager — "who is coordinating the whole picture?" Usually a nurse or social worker, the case manager coordinates services across settings over time for complex, high-utilization patients, monitors utilization, and manages transitions of care.
Health coach — "how does the patient build the skill?" The coach supports behavior change through goal setting, motivational interviewing, and follow-up between visits. The scope line is firm: a medical assistant health coach reinforces the goal the provider set — walking 20 minutes daily, checking glucose twice daily, taking the medication as prescribed — and teaches the skill. The coach does not set the hemoglobin A1C target, decide the exercise prescription for a cardiac patient, or adjust a medication.
The common technique across all four roles is teach-back: ask the patient to explain the plan in their own words rather than asking "do you understand?", which reliably produces a yes regardless of comprehension.
A Working Map of the Medical Specialties
Routing a patient to the wrong specialty wastes an authorization, delays care, and frustrates the patient. The exam tests this as system-to-specialty matching.
| Specialty | Focus |
|---|---|
| Cardiology | Heart and blood vessels |
| Pulmonology | Lungs and respiratory system |
| Gastroenterology | Digestive tract, liver, pancreas, gallbladder |
| Nephrology | Kidneys, dialysis, electrolyte disorders |
| Urology | Urinary tract in all patients; male reproductive system (surgical) |
| Endocrinology | Hormones — diabetes, thyroid, adrenal, pituitary |
| Neurology | Brain, spinal cord, nerves (medical) |
| Neurosurgery | Surgical treatment of the nervous system |
| Orthopedics | Bones, joints, ligaments, tendons |
| Rheumatology | Autoimmune and inflammatory joint and connective tissue disease |
| Dermatology | Skin, hair, nails |
| Ophthalmology | Eye — medical and surgical, MD/DO |
| Optometry | Vision testing, corrective lenses, primary eye care, OD |
| Otolaryngology (ENT) | Ear, nose, throat, head and neck |
| Obstetrics and gynecology | Pregnancy and the female reproductive system |
| Pediatrics | Infants, children, adolescents |
| Geriatrics | Older adults |
| Oncology | Cancer |
| Hematology | Blood and blood-forming tissue |
| Psychiatry | Mental illness — MD/DO, can prescribe |
| Psychology | Assessment and therapy — PhD/PsyD, generally cannot prescribe |
| Radiology | Diagnostic imaging interpretation |
| Pathology | Laboratory and tissue diagnosis |
| Anesthesiology | Anesthesia and perioperative care |
| Physiatry (PM&R) | Physical medicine and rehabilitation |
| Podiatry | Foot and ankle, DPM |
| Allergy and immunology | Allergic and immune disorders |
| Infectious disease | Complex or persistent infections |
The pairs that generate the most exam questions are neurology versus neurosurgery (medical versus surgical), ophthalmology versus optometry (physician versus optometrist), psychiatry versus psychology (prescribing versus non-prescribing), nephrology versus urology (medical kidney disease versus surgical urinary tract), and rheumatology versus orthopedics (inflammatory joint disease versus structural and surgical).
A patient with newly diagnosed type 2 diabetes tells the medical assistant she cannot afford the prescribed medication, has no transportation to the laboratory, and does not understand the follow-up plan. Which role best describes what is needed?
A provider asks the medical assistant to arrange a specialist appointment for a patient with worsening rheumatoid arthritis affecting multiple joints. Which specialty is appropriate?