What are the dietitian licensure, title and telehealth rules in Washington, and how should dietitians market there?
Washington certifies dietitians and nutritionists rather than licensing the practice: you need state certification to call yourself a "certified dietitian" or "certified nutritionist", not to give nutrition advice. The Department of Health issues both credentials under chapter 18.138 RCW. Washington has also enacted the Dietitian Licensure Compact, effective July 1, 2028. For marketers, the bigger day-to-day rule is the My Health My Data Act, which limits how websites and ads use health data.
- Certification, not licensure: RCW 18.138.020 protects "certified dietitian", "certified nutritionist" and the C.D., C.N. and D. designations, as of October 2026.
- Two state credentials: certified dietitians practice dietetics; certified nutritionists provide general nutrition services, under RCW 18.138.010.
- Compact on the way: House Bill 2088 was signed in March 2026 and takes effect July 1, 2028.
- Health-data law matters most for ads: the My Health My Data Act requires consent for collecting and sharing consumer health data and bans geofencing around health care sites.
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Does Washington license dietitians?
Not in the full-licensure sense. Washington runs a certification system. Under RCW 18.138.020, no one may represent themselves as a certified dietitian or certified nutritionist without state certification. The statute does not make general nutrition counseling by others unlawful. The Department of Health, through the Secretary of Health, issues and renews the credentials.
RCW 18.138.010 defines two roles. A certified dietitian is certified to practice dietetics, which covers assessing nutritional status, nutrition counseling and managing nutrition care systems. A certified nutritionist is certified to provide general nutrition services, meaning education about food choices for normal health maintenance.
Who qualifies
- Certified dietitian. RCW 18.138.030 requires a bachelor's degree or higher in a nutrition-related field, 900 hours of supervised preprofessional experience or a coordinated program, and a passing dietitian exam. The Department of Health requirements page says the exam is taken with CDR and asks for proof of current CDR status.
- Certified nutritionist. Either meet the dietitian requirements, or hold a qualifying master's or doctoral degree in human nutrition, nutrition education, foods and nutrition, or public health nutrition.
That second route matters for marketing. A Washington certified nutritionist may not be a registered dietitian, so bios must describe each person's actual credential.
Which titles are protected for Washington dietitians and nutritionists?
Washington protects the "certified" titles and their short forms. Using "certified dietitian", "certified dietician", "certified nutritionist", "C.D.", "C.N." or "D." in a title or description of services signals certification under RCW 18.138.020. The same section lets the Secretary of Health adopt rules on advertising that could mislead the public about certification.
| Title or phrase | Status in Washington | Marketing guidance |
|---|---|---|
| Certified dietitian, C.D. | Reserved for state-certified dietitians | Show it with the state credential number |
| Certified nutritionist, C.N. | Reserved for state-certified nutritionists | Do not present a C.N. as a registered dietitian unless they are one |
| "D." after a name | Listed in RCW 18.138.020 as signaling certification | Avoid informal abbreviations; spell out the credential |
| RD, RDN | National CDR credential | Pair with "C.D." for Washington clients when both are held |
| "Licensed dietitian" for Washington | Washington certifies rather than licenses | Use "certified" for Washington; keep "licensed" for states that license |
| "Nutritionist" without "certified" | Not reserved by RCW 18.138.020 | Describe the real training; avoid implying state certification |
There is also a narrow exemption. RCW 18.138.110 says the chapter does not cover health food store owners, operators and employees, as long as they do not claim to be certified dietitians or nutritionists.
What are the telehealth rules for dietitians serving Washington clients?
Washington-certified dietitians and nutritionists may serve Washington residents in person or by telehealth, under WAC 246-822-175, which took effect in September 2024. Washington also requires telemedicine training for many credentialed health professionals. Out-of-state clinicians should check each client's state, because rules follow the client.
Telemedicine training
RCW 43.70.495 requires health care professionals who provide clinical services by telemedicine to complete a telemedicine training and keep a signed attestation. The statute defines a health care professional as a person licensed, registered or certified to provide health services. Certified dietitians should assume it applies and confirm with the Department of Health.
The Dietitian Licensure Compact
Washington enacted the compact through House Bill 2088, which passed both chambers and was signed on March 11, 2026, as chapter 18, Laws of 2026. Its effective date is July 1, 2028. The compact counts state certificates and other authorizations, not only licenses, which is how a certification state like Washington can take part; confirm the details with the Department of Health. Until it is running, out-of-state dietitians need each state's own credential where one is required.
For practices outside Washington
- Because Washington does not license practice, an out-of-state RD may be able to counsel Washington residents without Washington certification, as far as we found. They may not use the protected "certified" titles.
- Payer contracts may still require state certification. RCW 18.138.100 neither requires nor prohibits insurers from covering services by certified practitioners.
- Confirm your model with counsel before you advertise statewide.
How does the My Health My Data Act change dietitian marketing in Washington?
It is the Washington rule most likely to affect your ads and website. The My Health My Data Act, chapter 19.373 RCW covers consumer health data, including inferences about health drawn from other data. Collecting it needs consent for a stated purpose unless it is needed for a service the consumer asked for, and sharing it needs a separate consent.
What the Act requires
- Consent must be a clear affirmative act. Accepting general terms of use does not count.
- Selling consumer health data needs a separate signed authorization.
- Geofencing within 2,000 feet of a site that provides in-person health care, to track visitors or send them health ads, is unlawful.
- Violations are treated as unfair or deceptive acts under Washington's Consumer Protection Act.
What it means for a dietitian practice
A site visit to a page about diabetes nutrition, a quiz on eating habits or a newsletter sign-up for a weight program can all produce health data. Ad pixels that pass that data to ad platforms need careful review. The Act sits alongside HIPAA, not in place of it: data that is already HIPAA-protected health information is handled differently, so map which law covers each form and tool. Our guide to HIPAA-safe website tracking shows safer setups for booking and intake pages.
Do not run location-based ads drawn tightly around clinics, hospitals or competitor offices in Washington. Use city or county targeting and consented first-party lists instead.
A quick health-data audit for Washington
- List every form, quiz, chat tool and booking widget on the site.
- Note which ones ask about conditions, weight, diet or medications.
- Check which third-party scripts load on those pages and what they send.
- Add a clear consent step before health questions where one is required, and a separate one before any sharing.
- Update the privacy notice so it matches what the site actually does.
- Repeat the audit whenever you add a new tool or campaign.
Washington's Act also gives consumers rights to access and delete their health data, so the front desk needs a simple way to log and answer those requests.
How should a Washington practice present credentials and services online?
Explain each credential in one plain sentence, group services by who delivers them, and make referral steps obvious. Washington has three overlapping credentials a client may meet: the state certified dietitian, the state certified nutritionist and the national RD or RDN. Clients rarely know the difference, so your website should tell them.
A credential line that reads well
- "[Name], RDN, C.D. Registered dietitian nutritionist and Washington certified dietitian."
- "[Name], C.N. Washington certified nutritionist, MS in human nutrition."
- Link each bio to the state's provider credential lookup so a client or referrer can check it.
Service pages by provider type
Medical nutrition care for conditions such as diabetes, kidney disease or digestive disorders fits the dietetics definition and belongs with certified dietitians. General nutrition education, such as workplace talks, cooking classes or healthy-eating programs, fits the general nutrition services that certified nutritionists provide. Labeling pages this way matches the statute's own split and helps clients choose.
Referral-ready pages
Physician offices want three things: what you treat, how to refer and how fast you respond. A one-page referral guide with a secure fax or e-referral option, plus a named contact, does more than a long brochure. Our guide to physician referral marketing for dietitians covers outreach and follow-up.
Google Business Profile
- Use the practice's real name, without added keywords.
- List services that match your website service pages.
- Choose a real address clients visit, or a service area if you go to clients.
- Ask for reviews after visits, with no incentives and no filtering of unhappy clients.
A fully virtual practice may not qualify for a profile. In that case, put the effort into service pages, physician referrals and consented email.
How should dietitians market a Washington practice?
Show the right Washington credential for each person, build condition and referral pages for covered care, and keep tracking consent-first. Washington clients can see whether someone is state-certified, so accuracy is visible. Strong practices pair the state credential with the national RD or RDN and explain both in one line.
| Area | What to do | Washington reason |
|---|---|---|
| Bios and Google Business Profile | "RDN, C.D." or "C.N." exactly as held | RCW 18.138.020 reserves the certified titles |
| Website forms | Plain consent language before health questions | My Health My Data Act consent rules |
| Paid ads | No geofences near health care sites; review pixels | RCW 19.373 geofencing ban |
| Telehealth pages | List states served and the credential in each | Rules follow the client's location |
| Insurance pages | Explain referral steps and accepted plans | Medicare Part B covers MNT for diabetes and kidney disease with a referral, per Medicare.gov |
How Ichelon Consulting US helps
We set up credential-accurate profiles, consent-first forms and HIPAA-safe tracking for dietitian practices. We sign a Business Associate Agreement (BAA) with every US client. Each engagement is Goals-Driven: we agree monthly goals, track them on Ichelon Agency OS and report every Monday. Retainers start from $499/month and are custom-scoped. See how our dietitian marketing agency works, and compare Washington with other states on the dietitian licensure by state hub. This page is general information as of October 2026, not legal advice; confirm with counsel or the Department of Health. For a review of your Washington setup, book a call with the US team.
Related pages from the US team
Dietitian marketing agency USA
How Ichelon Consulting US runs marketing for dietitian practices.
Dietitian licensure by state
Compare certification, licensure and title-protection states.
HIPAA-safe website tracking
Safer tracking for booking and intake pages.
Telehealth practice marketing
Service areas and booking flows for multi-state care.
Every practice welcome — Goals-Driven engagements from $499/mo
We benchmark your last 90 days, agree monthly goals with you, and track them live on Ichelon Agency OS with a report every Monday. Performance-Linked Payout Models are available. Our US leadership is based in Dallas, and strategy calls run in US business hours.
Common questions
Does Washington require a license to practice nutrition?
No. As of October 2026, Washington certifies dietitians and nutritionists under chapter 18.138 RCW instead of licensing the practice. Certification is needed to use the titles "certified dietitian" or "certified nutritionist" and the C.D., C.N. or D. designations. People without certification may not use those titles. Payers and employers may still require certification, so confirm requirements with the Department of Health and counsel.
What is the difference between a certified dietitian and a certified nutritionist in Washington?
Under RCW 18.138.010, a certified dietitian practices dietetics, including nutrition assessment and counseling, while a certified nutritionist provides general nutrition services, meaning education on food choices for normal health. Dietitians need a qualifying degree, 900 hours of supervised experience and a dietitian exam. Nutritionists can qualify that way or with a qualifying master's or doctoral degree.
Has Washington joined the Dietitian Licensure Compact?
Yes, by statute. House Bill 2088 passed the Washington Legislature and was signed on March 11, 2026, as chapter 18, Laws of 2026. Its effective date is July 1, 2028. Until the compact is running and Washington's participation takes effect, dietitians who want to practice across state lines need each state's own credential where that state requires one.
How does the My Health My Data Act affect dietitian advertising?
Washington's My Health My Data Act, chapter 19.373 RCW, requires consent to collect consumer health data and a separate consent to share it, unless the data is needed for a service the consumer requested. It bans geofencing within 2,000 feet of in-person health care sites for tracking or health ads. Dietitian practices should review pixels, forms and location targeting.
Do Washington dietitians need telemedicine training?
Likely yes. RCW 43.70.495 requires health care professionals who provide clinical services by telemedicine to complete a telemedicine training and keep a signed attestation, and it defines a health care professional as someone licensed, registered or certified to provide health services. WAC 246-822-175 allows certified dietitians and nutritionists to serve Washington residents by telehealth. Confirm with the Department of Health.
A note on this guide: it explains marketing practice, not legal advice. Rules on privacy, advertising and insurance change and vary by state, so confirm anything compliance-related with your own counsel.
Are your Washington forms and ads ready for the health-data rules?
A 30-minute call with the US team. We will check credential wording, consent on your forms and your ad targeting, and tell you what to fix first.