Registered dietitian screening questions: CDR registration, state licensure, clinical nutrition and CMS rules by setting
On this page
- Which dietitian job is it?
- Which credentials and federal rules apply?
- Knockout questions
- Clinical questions with strong answers and red flags
- Workload, documentation and kitchen questions
- How does dietitian experience get overstated?
- A 15-minute phone-screen flow
- Scoring
- What to put in the submittal
- Lawful phrasing
- Questions people ask
Registered dietitian screening questions should confirm the candidate's registration with the Commission on Dietetic Registration (RD or RDN), the license or certification the job state requires, and recent experience in the client's setting, then test clinical judgment: malnutrition assessment, enteral and parenteral nutrition, renal or diabetes care, and how they work with physicians who sign the orders. As of November 2026, the Dietitian Licensure Compact is not yet issuing privileges, so a dietitian moving states needs the new state's own license where one is required.
The dietary aide screening questions cover the kitchen side: Food Code temperatures, diet textures and tray accuracy. This page is for the dietitian who assesses patients and residents, writes the nutrition plan and, in many buildings, supervises that kitchen. In long-term care, the dietitian's notes feed the resident assessment, so the MDS coordinator screening questions are a useful companion.
Which dietitian job is it?
| Setting | What the dietitian mostly does | Ask the candidate |
|---|---|---|
| Acute care hospital | Malnutrition screening follow-up, tube feeding and parenteral nutrition, ICU rounds, diet education at discharge | "How many patients a day, and how many were on tube feeds or parenteral nutrition?" |
| Long-term care | Weight changes, wounds, swallowing diets with speech therapy, care plan meetings, often consultant hours across buildings | "How many buildings and residents, and how did you track weight changes?" |
| Outpatient dialysis | Monthly labs, phosphorus and potassium education, fluid management, team care plans | "How many patients on your caseload, and which labs did you review each month?" |
| Outpatient and medical nutrition therapy | Diabetes, kidney disease, weight management, often billed to insurance | "How did referrals reach you, and which payers did you bill?" |
| Food and nutrition services management | Menus, budgets, staff, food safety inspections, therapeutic diet manual | "How many staff did you supervise, and what did your last inspection find?" |
| Telehealth nutrition company | Video visits with patients in several states | "Which states are you licensed in, and how did the company check where each patient was?" |
Which credentials and federal rules apply?
As of November 2026. We checked these on the Commission on Dietetic Registration's, the BLS's and the Medicare regulations' own pages. State licensure rules differ; check the job state's dietetics board.
- RD or RDN registration. The Commission on Dietetic Registration grants the RD and RDN credential after its registration exam. CDR's graduate degree page says that since January 1, 2024, the minimum degree to become eligible for the exam is a graduate degree; people registered or eligible by December 31, 2023 are not required by CDR to get one. Check status with CDR's credential verification.
- State licensure. The BLS Occupational Outlook Handbook says many states require dietitians to be licensed, others only register or certify the title, and a few have no rules for the occupation. Verify the license on the job state's board, separately from CDR.
- The compact. CDR's Dietitian Licensure Compact page says the first compact privileges are expected sometime in 2027, and that RDs who live in a state without licensure (it names California and Arizona) or outside the compact cannot use it.
- Specialist credentials. CDR offers board certification as a specialist in pediatric, renal, gerontological, pediatric critical care and oncology nutrition, digestive health, sports dietetics, and obesity and weight management. Diabetes roles may ask for the CDCES, which CBDCE lets employers verify on its site.
- Long-term care. Under 42 CFR 483.60(a), a nursing facility's qualified dietitian holds a bachelor's or higher degree with an accredited dietetics program, has at least 900 hours of supervised dietetics practice, and is licensed or certified by the state (or, where the state does not license, recognized as an RD by CDR). The facility may use one full-time, part-time or as a consultant.
- Hospitals. 42 CFR 482.28 requires a qualified dietitian full-time, part-time or on a consultant basis, and lets a qualified dietitian order patient diets, including therapeutic diets, when the medical staff authorizes it and state law allows.
- Dialysis. 42 CFR 494.140(c) requires the dialysis facility's dietitian to be registered with CDR and to have at least one year of professional experience in clinical nutrition as an RD. A new graduate does not qualify.
- Medicare medical nutrition therapy. Under 42 CFR 410.134, only a registered dietitian or nutrition professional may provide Medicare Part B MNT, and 410.132 limits referrals to a physician's diagnosis of diabetes or renal disease.
Knockout questions
| Question | Strong answer | Red flag |
|---|---|---|
| 1. Are you a registered dietitian with CDR, and what is your registration number? | Yes, with a number you can verify and a current registration period. | "Eligible for the exam" offered as registered. |
| 2. Are you licensed in [state], or when will you be? | An active license, or an application filed with a date. | Assumes the compact covers them now. |
| 3. For dialysis: do you have at least a year of clinical nutrition experience as an RD? | Yes, with dates after registration. | Counts the internship year. |
| 4. How recent is your experience in [setting]? | Months, employer and caseload. | Only a supervised practice rotation in this setting. |
| 5. The role is [hours, buildings, travel, weekend coverage]. Does that work? | Yes, or a specific limit. | Asks for a single building when the role covers three. |
Clinical questions with strong answers and red flags
-
"Walk me through assessing a patient flagged at risk for malnutrition."
- Strong answer: reviews intake, weight history, physical signs such as muscle and fat loss and fluid, and function; states whether the patient meets the criteria the hospital uses; documents it so the physician can diagnose and code it; and sets a plan with follow-up dates.
- Red flags: relies on a single lab value; never documents in a way the physician can use.
-
"A patient is starting tube feeding after a week of almost no intake. What do you watch for?"
- Strong answer: estimates needs by the facility's method, chooses a formula and a cautious start for refeeding risk, asks for the electrolytes to be monitored, and checks tolerance before advancing.
- Red flags: starts at the full goal rate on day one without mentioning refeeding risk.
-
Long-term care: "A resident has lost weight over the last month. What do you do?"
- Strong answer: confirms the weight, looks for causes with nursing and speech therapy (intake, chewing or swallowing, mood, medications, dental), updates the care plan, tells the physician and family, and follows up.
- Red flags: adds a supplement and nothing else.
-
Dialysis: "A patient's phosphorus has been high for three months. How do you approach it?"
- Strong answer: reviews diet and binder use with the patient, looks for hidden phosphate additives in their usual foods, brings it to the team care plan, and sets a realistic goal.
- Red flags: hands over a list of foods to avoid and moves on.
-
"Who writes the diet orders where you worked?"
- Strong answer: knows whether they held ordering privileges and what the medical staff allowed.
- Red flags: changed diet orders without privileges or a physician's order.
Workload, documentation and kitchen questions
| Question | Strong answer | Red flag |
|---|---|---|
| How many assessments and follow-ups did you complete in a day? | Numbers, and how they prioritized high-risk patients first. | No numbers at all. |
| Which documentation system and note format did you use? | Names the system and the format the facility required. | Days behind on notes as a habit. |
| How did you work with speech therapy on texture-modified diets? | Joint plans and a shared standard for textures and liquids in the kitchen. | Changes textures without the speech therapist. |
| What did you check on the tray line or in the kitchen? | Diet order accuracy, temperatures and allergy checks, and what they did when they found a problem. | Never set foot in the kitchen, for a role that oversees it. |
| For outpatient roles: which payers did you bill, and how did referrals arrive? | Knows Medicare MNT needs a physician referral for diabetes or kidney disease, and how commercial plans differed. | Billed without referrals. |
How does dietitian experience get overstated?
- Supervised practice counted as experience. Ask for the registration date and employers since.
- "ICU experience" from covering the unit on weekends. Ask how many critical care patients a week.
- Parenteral nutrition that was reading the pharmacist's orders. Ask what they recommended themselves.
- "Licensed in several states" that are title-protection states or applications still pending.
- Management that was covering for the director during a vacancy. Ask for budget and staff numbers.
A 15-minute phone-screen flow
- Minutes 0 to 2: setting, buildings, hours, weekend coverage and travel.
- Minutes 2 to 5: knockouts; write down the CDR number and each state license to verify after the call.
- Minutes 5 to 10: the malnutrition question and one setting question (tube feeding, weight loss or dialysis labs).
- Minutes 10 to 13: workload, documentation and kitchen oversight.
- Minutes 13 to 15: pay expectations (see salary expectation questions) and next steps.
Scoring
Pass or fail
- CDR registration current, verified by you.
- Licensed in the job state if it licenses dietitians, or a realistic route before the start date.
- Meets any setting rule (one year as an RD for dialysis).
- Accepts the schedule, buildings and travel.
Scored 0 to 2 each (10 possible)
- Nutrition assessment and malnutrition documentation.
- Setting skills: nutrition support, renal, diabetes or long-term care.
- Team work with physicians, nursing and speech therapy.
- Workload and documentation.
- Food service oversight, where the role includes it.
What to put in the submittal
Dietitian: [name]
CDR: RD/RDN, number [number], verified [date]
State license: [state, number, expiry] or [state does not license]
Specialist credentials: [CSR / CSG / CDCES / other] or none
Settings, last 3 years: [acute / long-term care / dialysis / outpatient / management], months each
Daily caseload: [assessments and follow-ups]
Nutrition support: [tube feeding / parenteral nutrition], recommends independently: [yes / no]
Diet order privileges held: [yes / no]
Schedule accepted: [hours, buildings, weekends]
Candidate's own gap: [e.g. "no ICU; never managed a kitchen budget"]Lawful phrasing
Ask about the job's functions, not the candidate's health or diet: "The role covers three buildings and includes weighing residents with the nursing staff. Can you perform that, with or without accommodation?" is lawful before an offer under the EEOC's guidance on disability-related questions. Ask for years of experience, not graduation year. See illegal interview questions, and how to verify candidate certifications for the CDR and license checks. For the later rounds, the interview guide for healthcare roles covers the loop. This page is not legal advice.
Questions people ask
Do registered dietitians need a master's degree now?
New candidates do. The Commission on Dietetic Registration says that from January 1, 2024, anyone becoming eligible for the registration exam for the first time needs at least a graduate degree. People who were already registered, or who established eligibility on or before December 31, 2023, are not required by CDR to get one.
Can a dietitian licensed in one state work in another under the compact?
Not yet. As of November 2026, the Commission on Dietetic Registration says the first Dietitian Licensure Compact privileges are expected to be issued sometime in 2027, and RDs who live in a state without dietitian licensure, such as California or Arizona, cannot use the compact. Until then, check the job state's own licensure rules.
What qualifications does a dialysis dietitian need?
Under the Medicare conditions for coverage for dialysis facilities, 42 CFR 494.140(c), the dietitian must be registered with the Commission on Dietetic Registration and have at least one year of professional work experience in clinical nutrition as a registered dietitian.
Can a dietitian write diet orders in a hospital?
Only where the hospital allows it. The hospital conditions of participation, 42 CFR 482.28(b)(2), let a qualified dietitian order patient diets, including therapeutic diets, when authorized by the medical staff and in line with state law. Ask the client whether its dietitians hold ordering privileges.