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Healthcare providers in Connecticut: counts by specialty
How many healthcare providers work in Connecticut? The federal NPPES registry listed 104,095 active NPIs with a practice address in the state as of the June 2026 snapshot, the 29th largest workforce among the 50 states and the District of Columbia. The single largest specialty is Clinical Social Worker, and New Haven 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 Connecticut
| # | Specialty (primary taxonomy) | Active NPIs | % of state |
|---|---|---|---|
| 1 | Clinical Social Worker | 9,004 | 8.6% |
| 2 | Student in an Organized Health Care Education/Training Program | 5,440 | 5.2% |
| 3 | Physical Therapist | 3,858 | 3.7% |
| 4 | Professional Counselor | 3,423 | 3.3% |
| 5 | Pharmacist | 3,227 | 3.1% |
| 6 | Internal Medicine Physician | 3,122 | 3.0% |
| 7 | Family Nurse Practitioner | 2,734 | 2.6% |
| 8 | Mental Health Counselor | 2,712 | 2.6% |
| 9 | Marriage & Family Therapist | 2,489 | 2.4% |
| 10 | General Practice Dentistry | 2,470 | 2.4% |
| 11 | Social Worker | 2,131 | 2.0% |
| 12 | Physician Assistant | 2,026 | 1.9% |
| 13 | Behavior Technician | 1,809 | 1.7% |
| 14 | Occupational Therapist | 1,758 | 1.7% |
| 15 | Speech-Language Pathologist | 1,752 | 1.7% |
| 16 | Behavior Analyst | 1,505 | 1.4% |
| 17 | Counselor | 1,465 | 1.4% |
| 18 | Chiropractor | 1,393 | 1.3% |
| 19 | Psychiatry Physician | 1,359 | 1.3% |
| 20 | Clinical Psychologist | 1,325 | 1.3% |
| 21 | Psychiatric/Mental Health Nurse Practitioner | 1,325 | 1.3% |
| 22 | Family Medicine Physician | 1,238 | 1.2% |
| 23 | Pediatrics Physician | 1,187 | 1.1% |
| 24 | Medical Physician Assistant | 1,134 | 1.1% |
| 25 | Dentist | 1,109 | 1.1% |
| 26 | Optometrist | 1,069 | 1.0% |
| 27 | Nurse Practitioner | 978 | 0.9% |
| 28 | Registered Dietitian | 921 | 0.9% |
| 29 | Emergency Medicine Physician | 876 | 0.8% |
| 30 | Certified Registered Nurse Anesthetist | 871 | 0.8% |
What the numbers show
Clinical Social Worker leads with 9,004 active records, 8.6% of everything the state has, or 1.7 times the volume of Student in an Organized Health Care Education/Training Program, the runner up at 5,440. Physical Therapist rounds out the podium with 3,858. Together, the top 5 specialties account for 24.0% of Connecticut's providers, and the 30 listed in the table cover 63.1% of the total. Overall, the state registry splits into 688 distinct taxonomies.
Geographically, active NPIs spread across 413 cities and towns in the state, but with heavy concentration: New Haven (10,553), Hartford (7,040) and Waterbury (3,755) post the largest volumes. Connecticut holds 1.1% 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