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Healthcare providers in Washington: NPI counts by specialty

This page summarizes active healthcare provider NPI records in Washington from the CMS National Plan and Provider Enumeration System (NPPES). It covers 233,680 records with a practice location in the state and highlights the largest specialties: Mental Health Counselor, Massage Therapist, Counselor, Behavior Technician, and Physical Therapist. The data describe registry records, not a headcount of individual clinicians.

Statewide totals

Active NPI records233,680
Registered sole proprietors57,618 (24.7%)

Of these records, 57,618, or 24.7%, are flagged as sole proprietors. This flag is self-reported and is an imperfect proxy for private practice, so it should not be read as a definitive measure of independently owned or operated providers.

Largest specialties in this state

SpecialtyActive NPIs
Mental Health Counselor18,147
Massage Therapist13,774
Counselor11,543
Behavior Technician8,853
Physical Therapist7,949
Pharmacist7,941
Student in an Organized Health Care Education/Training Program6,847
Registered Nurse6,842
Family Medicine Physician5,957
Clinical Social Worker5,797
Addiction (Substance Use Disorder) Counselor5,070
Chiropractor4,614
General Practice Dentistry4,289
Speech-Language Pathologist4,218
Internal Medicine Physician4,205
Dentist3,596
Specialist3,461
Physician Assistant3,459
Family Nurse Practitioner3,219
Occupational Therapist3,212
Behavior Analyst3,038
Marriage & Family Therapist2,618
Optometrist2,346
Peer Specialist2,309
Case Manager/Care Coordinator2,256
Nurse Practitioner2,213
Registered Dietitian2,177
Social Worker2,058
Pediatrics Physician2,046
Acupuncturist1,956
Clinical Psychologist1,767
Anesthesiology Physician1,736
Licensed Practical Nurse1,639
Naturopath1,586
Durable Medical Equipment & Medical Supplies1,531
Psychiatric/Mental Health Nurse Practitioner1,523
Emergency Medicine Physician1,439
Physical Therapy Assistant1,377
Psychiatry Physician1,300
Medical Physician Assistant1,195

Source: CMS National Plan and Provider Enumeration System (NPPES) Data Dissemination file, FOIA-disclosable public data under CMS-6060-N. Aggregated by Hero EMR on 2026-08-03; deactivated NPIs excluded; specialty assigned from the primary taxonomy code (NUCC 25.1). Counts below 11 are suppressed. Individual providers are never published. All provider data pages.

Common questions

How many active NPI records have a practice location in Washington?

The registry includes 233,680 active NPI records with a practice location in Washington.

Which specialties have the largest counts on this page?

The largest listed specialties are Mental Health Counselor (18,147), Massage Therapist (13,774), Counselor (11,543), Behavior Technician (8,853), and Physical Therapist (7,949).

What does the sole-proprietor share mean?

A total of 57,618 records, or 24.7%, are flagged as sole proprietors. The flag is self-reported and is an imperfect proxy for private practice.

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