Every credential type

Washington issues 169 different health care credentials. 98 of them have a page here — those with at least 150 active holders, covering 99.6% of the register. The rest are listed with their counts.

Types with a page

Credential type	Active credentials	Share
Registered Nurse License	106,983	19.3%
Nursing Assistant Certification	59,078	10.7%
Physician And Surgeon License	31,099	5.6%
Nursing Assistant Registration	25,386	4.6%
Medical Assistant Certification	20,392	3.7%
Advanced Registered Nurse Practitioner License	18,863	3.4%
Dental Assistant Registration	17,158	3.1%
Emergency Medical Technician Certification	14,905	2.7%
Medical Assistant Phlebotomist Certification	14,526	2.6%
Mental Health Counselor License	12,609	2.3%
Counselor Agency Affiliated Registration	12,416	2.2%
Pharmacist License	11,304	2.0%
Massage Therapist License	10,993	2.0%
Pharmacy Assistant License	10,772	1.9%
Pharmacy Technician Certification	10,038	1.8%
Licensed Practical Nurse	9,895	1.8%
Social Worker Independent Clinical License	9,624	1.7%
Radiologic Technologist Certification	8,453	1.5%
Physical Therapist License	8,159	1.5%
Medical Assistant Registration	7,667	1.4%
Dentist License	7,055	1.3%
Physician Assistant License	6,173	1.1%
Dental Hygiene License	6,089	1.1%
Certified Behavior Technician	5,091	0.9%
Veterinary License	4,715	0.9%
Occupational Therapist License	4,611	0.8%
Dietitian Certification	4,242	0.8%
Speech Language Pathologist License	4,148	0.7%
Mental Health Counselor Associate License	4,050	0.7%
Psychologist License	3,973	0.7%
Surgical Technologist Registration	3,937	0.7%
Physician and Surgeon License Interstate Medical Licensure Compact	3,928	0.7%
Osteopathic Physician & Surgeon License	3,926	0.7%
Social Worker Associate Independent Clinical License	3,736	0.7%
EMS Evaluator	3,718	0.7%
Respiratory Care Practitioner License	3,479	0.6%
Paramedic Certification	3,426	0.6%
Substance Use Disorder Professional Certification	3,247	0.6%
Marriage and Family Therapist License	3,052	0.6%
Veterinary Medication Clerk Registration	2,872	0.5%
Veterinary Technician License	2,861	0.5%
Chiropractor License	2,475	0.4%
Physical Therapist Assistant License	2,409	0.4%
X-Ray Technician Registration	1,935	0.3%
Optometrist License	1,745	0.3%
Medical Program Director Delegate	1,704	0.3%
Naturopathic Physician License	1,672	0.3%
Acupuncturist or Acupuncture and Eastern Medicine Practitioner	1,621	0.3%
Licensed Behavior Analyst	1,503	0.3%
Substance Use Disorder Professional Trainee Certification	1,501	0.3%
Advanced Registered Nurse Practitioner Anesthetist License	1,447	0.3%
Medical Assistant Hemodialysis Technician Certification	1,445	0.3%
Physician And Surgeon Residency Limited License	1,363	0.2%
Medical Test Site Certificate of Waiver License	1,325	0.2%
Occupational Therapy Assistant License	1,171	0.2%
Pharmacist Intern Registration	1,054	0.2%
Physical Therapy Compact Privilege	1,030	0.2%
Marriage and Family Therapist Associate License	925	0.2%
Athletic Trainer License	896	0.2%
Optician Dispensing License	896	0.2%
Birth Doula Certification	759	0.1%
Medical Cannabis Consultant Certification	730	0.1%
Osteopathic Physician and Surgeon License Interstate Medical Licensure Compact	696	0.1%
Advanced Registered Nurse Practitioner Midwife License	688	0.1%
Genetic Counselor License	598	0.1%
Hypnotherapist Registration	589	0.1%
Audiologist License	585	0.1%
Counselor Agency Affiliated License	578	0.1%
Certified Peer Support Specialist	576	0.1%
Expanded Function Dental Auxiliary	525	0.1%
Dental Hygiene Renewable Temporary License	513	0.1%
Nursing Technician Registration	483	0.1%
Cardiovascular Invasive Specialist Certification	406	0.1%
Nutritionist Certification	397	0.1%
Podiatric Physician And Surgeon License	389	0.1%
Advanced Emergency Medical Technician Certification	374	0.1%
Nursing Home Administrator License	365	0.1%
Hearing Aid Specialist License	353	0.1%
Social Worker Associate Advanced License	351	0.1%
Speech Language Pathology Assistant Certification	350	0.1%
Licensed Assistant Behavior Analyst	333	0.1%
Certified Peer Support Specialist Trainee	332	0.1%
Dentist Moderate Sedation Permit	316	0.1%
Dentist Moderate Sedation with Parenteral Agents Permit	313	0.1%
Dental Anesthesia Assistant Certification	301	0.1%
Drug Controlled Substance Researcher Registration	298	0.1%
Osteopathic Physician & Surgeon Limited License	288	0.1%
Counselor Certified Certification	252	0.0%
Physical Therapy Assistant Compact Privilege	234	0.0%
Dentist General Anesthesia Permit	228	0.0%
Midwife License	216	0.0%
Reflexologist Certification	195	0.0%
Counselor Agency Affiliated Certification	191	0.0%
Orthotist License	190	0.0%
Senior EMS Instructor Recognition	189	0.0%
Emergency Medical Responder Certification	186	0.0%
Chiropractic X-Ray Technician Registration	184	0.0%
Prosthetist License	178	0.0%

The 71 smaller types

Fewer than 150 active holders each. They are not given a page of their own, because a page naming a handful of people says more about those people than about the profession. They are all searchable.

Medical Assistant Interim Certification 149
Denturist License 148
Recreational Therapist Registration 131
Social Worker Advanced License 125
Physician and Surgeon Clinical Experience License 124
Advanced Registered Nurse Practitioner Clinical Specialist License 119
Animal Massage Certification for Large Animals 118
In Home Services Agency License 113
Dentist Pediatric Sedation Endorsement 107
Physician And Surgeon Teaching Research Limited License 102
Medication Assistant Endorsement 90
Sex Offender Treatment Provider Certification 87
Music Therapist License 78
Behavioral Health Agency 64
Animal Massage Certification for Small Animals 57
Medical Assistant Emergency Services Certification 54
Marriage and Family Therapist Probationary License 47
Behavioral Health Agency Branch Site 43
Medical Test Site Provider Performed Microscopic Procedures License 38
Dentist Resident Postdoctoral License 38
Poison Information Specialist Certification 34
Mental Health Counselor Probationary License 34
Medical Test Site Accredited License 34
Medical Test Site Categorized License 33
Medical Program Director 33
Social Worker Independent Clinical Probationary License 32
Veterinary Specialty License 25
Dental Laboratory Registration 25
Substance Use Disorder Professional Probationary Certification 21
Podiatric Physician And Surgeon Limited License 20
Dental Faculty License 20
Dentist Resident Community License 19
Colon Hydrotherapist Certification 18
Psychological Associate License 17
Optician Dispensing Apprentice Registration 17
Sex Offender Treatment Provider Affiliate Certification 16
Physician And Surgeon Fellowship Limited License 16
Behavioral Health Agency Tribal Attestation 16
Denturist Alternate Location 15
Physical Therapist Interim Permit 13
Anesthesiologist Assistant License 12
Tribal Attestation Agreement 11
Residential Treatment Facility License 10
Radiologist Assistant Certification 10
Ocularist License 10
Graduate Registered Nurse Practitioner Interim Permit 10
Ambulance Service Verified License 9
Forensic Phlebotomist Certification 8
Underlying Credential Out of State 7
Dental Hygiene Initial Temporary License 6
Ambulatory Surgical Facility License 6
Residential Treatment Facility Tribal Attestation 5
Behavioral Health Support Specialist Certification 5
Physician And Surgeon Institution License 4
Emergency Services Exam Proctor 4
EMS Provider Supervisory Organization 4
Senior EMS Instructor Candidate 3
Nursing Assistant Certified Training Program Instructor 3
Hospital Acute Care License 3
Dental Therapist License 3
Child Birth Center License 2
Ambulance Service License 2
Aid Service Verified License 2
Suicide Prevention Training Program 1
Speech Language Pathologist Interim Permit 1
Retired Volunteer Medical Worker 1
Respiratory Care Practitioner Temporary Permit 1
Registered Nurse Temporary Practice Permit 1
Poison Center Medical Director 1
Genetic Counselor Provisional License 1
Birth Doula Certification Training Program 1