Table 4.

Care transitions between medical groups

Medical group description	No. of clinicians	Specialties represented in group	Transition percentage (of total visits)
Group 1: hospital	8*	Radiology (2), pathology (4), internal medicine (1), otolaryngology (1)	86.4% (of 18 403)†
Group 2: large group practice	21	Multiple specialties‡	36.8% (of 75 246)
Group 3: medium-size group practice	6	Cardiology (2), urology (2), obstetrics/gynecology (2)	70.8% (of 10 343)
Group 4: medium-size group practice	4	Orthopedic surgery	69.5% (of 9993)
Group 5: medium-size group practice	5	Internal medicine	41.2% (of 14 248)
Group 6: medium-size group practice	5	Pediatrics	23.9% (of 20 890)
Group 7: medium-size group practice	4	Ophthalmology	81.7% (of 6164)
Group 8: medium-size group practice	6	Family practice (3), nurse practitioner (1), obstetrics/gynecology (2)	62.2% (of 14 039)
Group 9: medium-size group practice	5	Physical therapy	20.1% (of 14 542)
Group 10: small group practice	1	Family practice	43.1% (of 8725)

Only groups with >6000 visits in the data set are shown (except for one radiology group which is not shown). Care transitions between providers within the same group are not counted in the transition percentages.

^*Clinicians who treat patients for inpatient and emergency department visits are not counted in the number of clinicians.

^†The hospital's transition percentage includes inpatient and emergency department visits. If these visits are excluded, the transition percentage is slightly higher at 88.5%. Most hospital visits are for radiology or pathology.

^‡This group included: general surgery (2), internal medicine (11), nurse practitioner (1), neurology (1), obstetrics and gynecology (1), pediatrics (3), pulmonary disease (1), and podiatry (1).