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Healthcare providers in Ohio: NPI counts by specialty

This page summarizes active NPI records in Ohio with a practice location in the state, using the CMS NPPES registry. It reports the total, sole-proprietor share, and largest recorded specialties, with listed counts for each. The information supports workforce review by practice managers, physicians considering practice in Ohio, and analysts, while describing registry records rather than a direct measure of people or service capacity.

Statewide totals

Active NPI records387,120
Registered sole proprietors133,796 (34.6%)

In Ohio, 133,796 active NPI records, or 34.6% of the total, are flagged as sole proprietors. The flag is self-reported and is an imperfect proxy for private practice, so the share should not be treated as a definitive measure of independent practice.

Largest specialties in this state

SpecialtyActive NPIs
Case Manager/Care Coordinator33,712
Student in an Organized Health Care Education/Training Program14,872
Licensed Practical Nurse12,586
Addiction (Substance Use Disorder) Counselor11,385
Pharmacist10,864
Registered Nurse10,782
Home Health Aide10,616
Social Worker10,601
Mental Health Counselor9,119
Home Health Agency9,059
Clinical Social Worker9,024
Family Nurse Practitioner8,782
Speech-Language Pathologist7,685
Physical Therapist7,654
Behavior Technician7,375
Internal Medicine Physician7,151
Family Medicine Physician6,880
Professional Counselor5,867
General Practice Dentistry5,204
Homemaker5,149
Physician Assistant4,929
Counselor4,562
Occupational Therapist4,510
Personal Care Attendant4,383
Chiropractor4,331
Nurse Practitioner3,915
Optometrist3,623
Dentist3,539
Community/Behavioral Health Agency3,469
Pediatrics Physician3,437
In Home Supportive Care Agency3,318
Community Health Worker3,170
Certified Registered Nurse Anesthetist3,118
Durable Medical Equipment & Medical Supplies2,963
Athletic Trainer2,879
Physical Therapy Assistant2,866
Emergency Medicine Physician2,862
Peer Specialist2,792
Registered Dietitian2,561
Non-emergency Medical Transport (VAN)2,467

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

What does the Ohio total represent?

The total is 387,120 active NPI records with a practice location in Ohio. It is a registry-record count, not necessarily a count of individual clinicians.

Which specialties have the largest recorded counts?

The largest listed specialties are Case Manager/Care Coordinator (33,712), Student in an Organized Health Care Education/Training Program (14,872), Licensed Practical Nurse (12,586), Addiction (Substance Use Disorder) Counselor (11,385), and Pharmacist (10,864).

How should the sole-proprietor figure be interpreted?

133,796 records, or 34.6%, are flagged as sole proprietors. The flag is self-reported and is an imperfect proxy for private practice.

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