Table 3. Allopathic and osteopathic physicians' ownership interest in entities reporting to Open Payments by specialty type and specialty, January 1, 2013 to December 31, 2013.
| Physician specialty | Total records, No. | Total dollar amount investedb, USD | Per-physician median dollar amount invested, USD (IQR) | Total value of interestc, USD | Per-physician median value of interest, USD (IQR) | Active physicians, No. | Physicians with ownership interestd, No. (% of total) |
|---|---|---|---|---|---|---|---|
| All allopathic and osteopathic specialties | 3,296 | $309,732,657 | $12,520 ($3,114-$50,050) | $446,722,819 | $15,640 ($4,747-$72,880) | 813,123 | 2,093 (0.26%) |
| Specialty types | |||||||
| Medical specialties | 668 | $109,759,857 | $11,250 ($100-$45,380) | $122,893,860 | $9,961 ($1,000-$50,000) | 417,130 | 613 (0.15%) |
| Surgical specialties | 2,412 | $150,829,819 | $10,690 ($4,297-$50,000) | $252,470,807 | $13,990 ($6,903-$68,440) | 167,314 | 1,303 (0.78%) |
| Other specialties | 216 | $49,142,981 | $50,000 ($10,190-$110,300) | $71,358,152 | $55,310 ($15,500-$150,000) | 228,679 | 177 (0.08%) |
| Medical specialties | |||||||
| Allergy & immunology | 6 | $273,545 | $20,250 ($2,418-$78,980) | $236,597 | $899 ($191-$72,840) | 4,413 | 6 (0.14%) |
| Cardiovascular disease | 103 | $45,401,145 | $72,500 ($20,430-$219,300) | $47,115,102 | $57,490 ($9,029-$200,000) | 23,085 | 82 (0.36%) |
| Dermatology | 11 | $1,135,718 | $30,000 ($25,000-$150,000) | $827,181 | $58,000 ($7,456-$150,000) | 11,772 | 9 (0.08%) |
| Family medicine & general practice | 101 | $2,049,440 | $13 ($10-$285) | $2,808,674 | $252 ($114-$892) | 98,365 | 97 (0.10%) |
| Gastroenterology | 21 | $44,407,718 | $34,430 ($2,682-$64,930) | $41,910,224 | $27,850 ($11,700-$57,410) | 13,826 | 20 (0.14%) |
| Internal medicine | 370 | $15,942,875 | $13,140 ($1,000-$30,000) | $29,198,748 | $16,610 ($1,000-$42,770) | 182,540 | 351 (0.19%) |
| Pediatrics | 56 | $549,416 | $50 ($20-$100) | $797,334 | $1,359 ($406-$2,024) | 80,822 | 48 (0.06%) |
| Pediatric cardiology | 0 | NA | NA | NA | NA | 2,307 | 0 (0.00%) |
| Surgical specialties | |||||||
| Colorectal surgery | 9 | $77,600 | $5,950 ($0-$12,520) | $138,822 | $9,675 ($3,993-$28,460) | 1,568 | 8 (0.51%) |
| Neurosurgery | 139 | $18,113,613 | $50,000 ($20,000-$136,900) | $28,948,119 | $80,380 ($25,760-$209,200) | 6,041 | 117 (1.94%) |
| Obstetrics & gynecology | 49 | $45,177,593 | $10 ($8-$27,090) | $43,410,134 | $398 ($147-$53,520) | 43,527 | 44 (0.10%) |
| Ophthalmology | 72 | $8,408,084 | $49,980 ($24,250-$139,200) | $31,160,165 | $96,900 ($49,950-$248,700) | 18,805 | 66 (0.35%) |
| Oral/maxillofacial surgery | 0 | NA | NA | NA | NA | 455 | 0 (0.00%) |
| Orthopedic surgery | 511 | $60,377,284 | $50,000 ($11,500-$109,600) | $88,029,175 | $50,000 ($13,500-$143,200) | 25,670 | 385 (1.50%) |
| Otolaryngology | 25 | $3,416,882 | $9,533 ($9,533-$69,960) | $8,534,038 | $9,686 ($9,686-$112,500) | 10,466 | 24 (0.23%) |
| Plastic surgery | 8 | $1,528,715 | $30,000 ($26,550-$110,700) | $1,646,186 | $99,600 ($26,380-$134,800) | 7,726 | 7 (0.09%) |
| Surgery (general) | 64 | $4,395,325 | $28,880 ($2,067-$78,720) | $29,773,281 | $42,820 ($7,025-$142,700) | 37,739 | 55 (0.15%) |
| Thoracic surgery | 21 | $1,099,408 | $12,800 ($126-$176,900) | $4,518,110 | $75,680 ($11,560-$265,500) | 4,544 | 14 (0.31%) |
| Urology | 1,514 | $8,235,315 | $6,937 ($3,955-$10,690) | $16,312,777 | $7,542 ($5,275-$12,500) | 10,773 | 583 (5.41%) |
| Other specialties | |||||||
| Anesthesiology | 39 | $4,786,711 | $67,330 ($17,250-$165,800) | $14,454,518 | $79,870 ($25,480-$257,000) | 44,555 | 34 (0.08%) |
| Emergency medicine | 17 | $3,197,682 | $49,980 ($24,250-$146,500) | $3,292,858 | $79,370 ($17,220-$150,000) | 35,937 | 14 (0.04%) |
| Neurology | 12 | $424,982 | $27,500 ($7,083-$50,000) | $1,185,354 | $43,750 ($15,770-$142,300) | 16,810 | 11 (0.07%) |
| Pathology | 7 | $339,064 | $9,197 ($0-$79,600) | $2,339,510 | $103,000 ($38,800-$336,800) | 18,922 | 6 (0.03%) |
| Psychiatry | 9 | $869,191 | $73,580 ($64,190-$125,000) | $1,221,293 | $71,910 ($40,490-$107,600) | 47,833 | 8 (0.02%) |
| Radiology | 116 | $37,705,465 | $33,850 ($6,274-$81,820) | $47,311,353 | $50,000 ($11,100-$90,640) | 40,922 | 91 (0.22%) |
| Other | 16 | $1,819,886 | $101,000 ($50,000-$163,900) | $1,553,266 | $112,200 ($51,010-$190,900) | 23,700 | 13 (0.05%) |
a
Abbreviations: IQR=Interquartile range; NA=Not applicable; No.= Number; USD=2013 United States Dollars
b
The proportion of physicians with ownership interest differed significantly between specialty types, and across specialties within each type (Pearson's chi-square test, P < .001 for all comparisons).
c
The total dollar amount invested differed significantly between specialty types, and across specialties within each type (Kruskal-Wallis test, P < .001 for all comparisons except for across specialties within other specialties (P = .001))
d
The total value of interest differed significantly between specialty types and across specialties within each type using (Kruskal-Wallis test, P < .001 for all comparisons except for across specialties within other specialties (P = .11)).