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Healthcare providers in Ohio: counts by specialty
How many healthcare providers work in Ohio? The federal NPPES registry listed 400,773 active NPIs with a practice address in the state as of the June 2026 snapshot, the 5th largest workforce among the 50 states and the District of Columbia. The single largest specialty is Case Manager/Care Coordinator, and Columbus is the city with the most records. The table below lists the 30 specialties with the most active providers and the share each one holds.
The 30 largest specialties in Ohio
| # | Specialty (primary taxonomy) | Active NPIs | % of state |
|---|---|---|---|
| 1 | Case Manager/Care Coordinator | 34,348 | 8.6% |
| 2 | Student in an Organized Health Care Education/Training Program | 13,147 | 3.3% |
| 3 | Licensed Practical Nurse | 12,635 | 3.2% |
| 4 | Addiction (Substance Use Disorder) Counselor | 11,536 | 2.9% |
| 5 | Social Worker | 11,333 | 2.8% |
| 6 | Home Health Aide | 11,221 | 2.8% |
| 7 | Pharmacist | 10,899 | 2.7% |
| 8 | Clinical Social Worker | 10,640 | 2.7% |
| 9 | Family Nurse Practitioner | 9,805 | 2.4% |
| 10 | Home Health Agency | 9,763 | 2.4% |
| 11 | Registered Nurse | 9,623 | 2.4% |
| 12 | Mental Health Counselor | 8,721 | 2.2% |
| 13 | Physical Therapist | 7,950 | 2.0% |
| 14 | Speech-Language Pathologist | 7,830 | 2.0% |
| 15 | Behavior Technician | 7,355 | 1.8% |
| 16 | Family Medicine Physician | 7,253 | 1.8% |
| 17 | Professional Counselor | 7,191 | 1.8% |
| 18 | Homemaker | 6,740 | 1.7% |
| 19 | Internal Medicine Physician | 6,457 | 1.6% |
| 20 | Personal Care Attendant | 5,353 | 1.3% |
| 21 | General Practice Dentistry | 5,349 | 1.3% |
| 22 | Physician Assistant | 5,270 | 1.3% |
| 23 | Occupational Therapist | 4,535 | 1.1% |
| 24 | Chiropractor | 4,420 | 1.1% |
| 25 | Nurse Practitioner | 4,358 | 1.1% |
| 26 | Counselor | 4,213 | 1.1% |
| 27 | Community/Behavioral Health Agency | 3,845 | 1.0% |
| 28 | Community Health Worker | 3,794 | 0.9% |
| 29 | In Home Supportive Care Agency | 3,763 | 0.9% |
| 30 | Optometrist | 3,712 | 0.9% |
What the numbers show
Case Manager/Care Coordinator leads with 34,348 active records, 8.6% of everything the state has, or 2.6 times the volume of Student in an Organized Health Care Education/Training Program, the runner up at 13,147. Licensed Practical Nurse rounds out the podium with 12,635. Together, the top 5 specialties account for 20.7% of Ohio's providers, and the 30 listed in the table cover 63.1% of the total. Overall, the state registry splits into 799 distinct taxonomies.
Geographically, active NPIs spread across 1,570 cities and towns in the state, but with heavy concentration: Columbus (43,989), Cincinnati (37,139) and Cleveland (34,246) post the largest volumes. Ohio holds 4.4% of all active US providers registered across the 50 states and the District of Columbia.
Source and method
Data: NPPES Data Dissemination file (National Plan and Provider Enumeration System), published by CMS as public domain data, snapshot of June 2026. Each provider is counted once, in the state and city of the Provider Business Practice Location, under the primary taxonomy declared in the NPI record itself. Only active NPI records are counted.
Important: an active NPI does not mean the professional is currently practicing, accepting new patients or even still working in the field; it only means the registration number remains valid. This page publishes aggregate counts only, never individual records.
Last updated: · Methodology and sources