Exhibit 4. Practitioners Providing 10 or More Telehealth Services in 2009.

Type of practitioner	Count	Percent
Psychiatrists, psychologists, clinical social workers	181	49
NPs, PAs, clinical nurse specialists	69	19
Family practice, internal medicine specialists	24	7
Nephrologists	14	4
All other (e.g., neurologists, cardiologists, hematologists, etc.)	81	22
Total	369

NOTES: NP (nurse practitioner), PA (physician assistant). Figures do not sum to 100 percent due to rounding. It is possible that our counts of NPs, PAs, clinical nurse specialists, and clinical social workers are undercounts, because these practitioners sometimes bill for services under the names of the physicians they work for.

SOURCE: Authors’ analysis of 100% of claims from the Medicare carrier file for 2009.