Table 2:

List of Non-Hematology Specialist by type and visit frequency for age 1− 65+ Sample N=2045

Specialty Type	Frequency
Primary Care Visits	6251
Hematology Specialty Visits	2792
Non-Hematology Specialty Visits	8827
Acute Care*	2743
Physician Assistant (Unidentified Specialty or Family Practice)	1477
Nurse Practitioner (Unidentified Specialty or Family Practice)	1144
Unidentifiable (Null)**	458
Obstetrician/Gynecologist	383
Other Specialty Visits***	377
Orthopedic Medicine	295
Ophthalmology/Optometry	282
Surgery	235
Cardiology	191
Neurology	178
Pulmonary	174
Oncology	161
Nephrology	122
Otolaryngology	116
Anesthesiology	103
Gastroenterology	96
Physical and Rehabilitation Medicine	91
Foot & Ankle Surgery/Podiatric Medicine	87
Urology	82
Psychology	32

^*Acute care visit- a visit that occurred in an out-patient acute setting

^**Unidentifiable (Null) category includes office visits with a billing provider code for “multi-specialty” or “single specialty” with no rendering provider information.

^***Other specialty visits- include outpatient visits not historically linked to SCD care or a frequency of visits within the specialty category ≤ 1% of the total number of specialty visits. Excludes: SCD and general NP or PA visits; Includes: addiction medicine, allergy and immunology, anatomic pathology, critical care medicine, dermatology, development behavior, diagnostic radiology, endocrinology, geriatric medicine, infectious disease, special hospital, neonatal-perinatal medicine, neuro-development, rheumatology, sleep medicine, sports medicine, vascular and interventional.