DoctorsProofNPPES directory · verify at state boards

Doctors in Columbia, SC

2089 physicians listed in the NPPES public registry. Page 33 of 35.

NPPES tenure ≠ clinical experience. "Years on NPPES" is time since the physician first registered a National Provider Identifier, not time practicing medicine. Verify current license status with the state medical board.

Verify a license at the South Carolina Board of Medical Examiners

Dr. Ryan Woodard, MD

Internal Medicine

3 yrs NPPES
NPI 1740985175
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-6956
NPPES public registry
CMS Open Payments· $268.00 (2023)

Industry Payments (2023)

Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.

$268.00

Total received

2

Transactions

2

Paying companies

Top paying companies

Genentech USA, Inc.$145.87
Rayner Intraocular Lenses Limited$122.13

Among the 183,896 internal medicine doctors we've analyzed, about 37% received any industry payment (median $195 among those who did). This doctor's total ranks around the 84th percentile of that group.

Benchmark reflects doctors we've analyzed, not all US internal medicine doctors.

Payments to Ryan Woodard do not imply any wrongdoing. Many are meals, education, or research support.

Dr. Yoshua Mathai, MD

Internal Medicine

3 yrs NPPES
NPI 1912602350
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-6956
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Cody Cooper, MD

Internal Medicine

3 yrs NPPES
NPI 1417652850
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-6956
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Joseph Elengickal, MD

Internal Medicine

3 yrs NPPES
NPI 1770288110
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-6956
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Nirosha Adepu, MD

Internal Medicine

3 yrs NPPES
NPI 1669177002
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-6956
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Nathaniel Dilts, MD

Surgery

3 yrs NPPES
NPI 1841995222
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-8198
NPPES public registry
CMS Open Payments· $199.91 (2023)

Industry Payments (2023)

Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.

$199.91

Total received

2

Transactions

2

Paying companies

Top paying companies

W. L. Gore & Associates, Inc.$180.18
KCI USA, Inc.$19.73

Among the 39,537 surgery doctors we've analyzed, about 52% received any industry payment (median $305 among those who did). This doctor's total ranks around the 69th percentile of that group.

Benchmark reflects doctors we've analyzed, not all US surgery doctors.

Payments to Nathaniel Dilts do not imply any wrongdoing. Many are meals, education, or research support.

Dr. Taylor Hall, MD

Psychiatry

3 yrs NPPES
NPI 1649975020
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-1433
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Kirtan Kumar, MD

Psychiatry

3 yrs NPPES
NPI 1174228555
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-1433
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Bryna Alden, MD

Pediatrics

3 yrs NPPES
NPI 1427753813
9 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-7606
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Dallin Christensen, DO

Pediatrics

3 yrs NPPES
NPI 1245935642
9 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-7606
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Robert Klazynski, MD

Pediatrics

3 yrs NPPES
NPI 1225733629
9 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-7606
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Jack Mccarthy, MD

Plastic Surgery

3 yrs NPPES
NPI 1427753839
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-7931
NPPES public registry
CMS Open Payments· $255.21 (2023)

Industry Payments (2023)

Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.

$255.21

Total received

3

Transactions

3

Paying companies

Top paying companies

Stryker Corporation$145.67
Integra LifeSciences Corporation$89.81
KCI USA, Inc.$19.73

Among the 5,676 plastic surgery doctors we've analyzed, about 63% received any industry payment (median $311 among those who did). This doctor's total ranks around the 65th percentile of that group.

Benchmark reflects doctors we've analyzed, not all US plastic surgery doctors.

Payments to Jack Mccarthy do not imply any wrongdoing. Many are meals, education, or research support.

Dr. Matthew Holman, MD

Emergency Medicine

3 yrs NPPES
NPI 1295420313
14 RICHLAND MEDICAL PARK DR STE 350, Columbia, SC 29203(803) 434-3790
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Liza Romero, MD

Emergency Medicine

3 yrs NPPES
NPI 1700571924
14 RICHLAND MEDICAL PARK DR STE 350, Columbia, SC 29203(803) 434-1663
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Walter Carr, MD

Family Medicine

3 yrs NPPES
NPI 1396430484
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Adriana Melgen, MD

Family Medicine

3 yrs NPPES
NPI 1669167755
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Jonathan Kalenik, DO

Family Medicine

3 yrs NPPES
NPI 1487349577
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Patrick Yergler, MD

Family Medicine

3 yrs NPPES
NPI 1386339471
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Caleb Shields, MD

Emergency Medicine

3 yrs NPPES
NPI 1902591001
14 RICHLAND MEDICAL PARK DR STE 350, Columbia, SC 29203(803) 434-1663
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Jacob Mckenna, MD

Emergency Medicine

3 yrs NPPES
NPI 1063107167
14 RICHLAND MEDICAL PARK DR STE 350, Columbia, SC 29203(803) 434-3790
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Yasmeen Diaz-Ford, MD

Family Medicine

3 yrs NPPES
NPI 1205521390
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. John Hammond, MD

Family Medicine

3 yrs NPPES
NPI 1578258661
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Alexander Rotoloni, DO

Family Medicine

3 yrs NPPES
NPI 1659066744
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Hazel Patel, MD

Family Medicine

3 yrs NPPES
NPI 1477248565
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Ionut Pupazan, MD

Emergency Medicine

3 yrs NPPES
NPI 1811682917
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-3790
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Cody Magnuson, MD

Emergency Medicine

3 yrs NPPES
NPI 1790470896
14 RICHLAND MEDICAL PARK DR STE 350, Columbia, SC 29203(803) 434-3790
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Darren Williams, MD

Surgery

3 yrs NPPES
NPI 1972291110
2 MEDICAL PARK RD STE 306, Columbia, SC 29203(803) 434-8198
NPPES public registry
CMS Open Payments· $30.91 (2023)

Industry Payments (2023)

Reported by drug and device makers to CMS Open Payments. These payments are legal and disclosed — shown as context, not a judgment.

$30.91

Total received

1

Transactions

1

Paying companies

Top paying companies

CSL Behring$30.91

Among the 39,537 surgery doctors we've analyzed, about 52% received any industry payment (median $305 among those who did). This doctor's total ranks around the 53th percentile of that group.

Benchmark reflects doctors we've analyzed, not all US surgery doctors.

Payments to Darren Williams do not imply any wrongdoing. Many are meals, education, or research support.

Dr. Tyler Chapman, MD

Emergency Medicine

3 yrs NPPES
NPI 1811671043
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-3790
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Carla Brown, MD

Family Medicine

3 yrs NPPES
NPI 1336822014
3209 COLONIAL DR, Columbia, SC 29203(803) 434-6113
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Jennifer Barnhill, MD

Family Medicine

3 yrs NPPES
NPI 1972387116
111 DOCTOR CIR, Columbia, SC 29203(803) 296-2273
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Justin Pearce, MD

Surgery

3 yrs NPPES
NPI 1164207379
2435 FOREST DR, Columbia, SC 29204(803) 256-5300
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Savanah Querze, MD

Family Medicine

3 yrs NPPES
NPI 1235915539
115 BLARNEY DR # 212, Columbia, SC 29223(803) 254-5171
NPPES public registryAccepts Medicare (2024)
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Felicia Keels, MD

Dermatology

3 yrs NPPES
NPI 1639959893
5808 SHAKESPEARE RD STE D, Columbia, SC 29223(803) 753-8792
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Susan Newsome, MD

Geriatric Psychiatry

3 yrs NPPES
NPI 1548033624
SC HOUSE CALLS INC., 111 DOCTORS CIR., Columbia, SC 29203(800) 491-0909
NPPES public registryAccepts Medicare (2024)
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Hayley Melba, MD

Physical Medicine & Rehabilitation

3 yrs NPPES
NPI 1881461747
250 DUCK GROVE WAY, Columbia, SC 29210(864) 395-1678
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Maegan Ransome, MD

Family Medicine

2 yrs NPPES
NPI 1881458412
612 SAINT ANDREWS RD, Columbia, SC 29210(803) 386-8684
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Pooja Parikh, DO

Internal Medicine

2 yrs NPPES
NPI 1447018619
2 MEDICAL PARK RD STE 402, Columbia, SC 29203(803) 434-6956
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Alexis Clark, MD

Psychiatry

2 yrs NPPES
NPI 1538910823
1301 TAYLOR ST STE 6J, Columbia, SC 29201(803) 434-4344
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Joshua Anderson, MD

Surgery

2 yrs NPPES
NPI 1407607799
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-8000
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Katherine Cushman, MD

Surgery

2 yrs NPPES
NPI 1861243156
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-8000
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Kaylen Bradley, MD

Family Medicine

2 yrs NPPES
NPI 1710737036
3209 COLONIAL DR, Columbia, SC 29203(803) 434-7399
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Leah Cobb, MD

Internal Medicine

2 yrs NPPES
NPI 1497505713
1801 SUNSET DR, Columbia, SC 29203(803) 434-4153
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Harsh Jha, MD

Internal Medicine

2 yrs NPPES
NPI 1922858240
1801 SUNSET DR, Columbia, SC 29203(803) 434-4153
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Alex Roetzheim, MD

Internal Medicine

2 yrs NPPES
NPI 1649020975
1801 SUNSET DR, Columbia, SC 29203(803) 434-4153
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Meghan Brennan, DO

Internal Medicine

2 yrs NPPES
NPI 1245080571
1801 SUNSET DR, Columbia, SC 29203(803) 434-4153
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Ashley Mason, DO

Internal Medicine

2 yrs NPPES
NPI 1063262392
1801 SUNSET DR, Columbia, SC 29203(803) 434-4153
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. David Antonie, MD

Internal Medicine

2 yrs NPPES
NPI 1699525923
1801 SUNSET DR, Columbia, SC 29203(803) 434-4153
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Hannah Castles, MD

Internal Medicine

2 yrs NPPES
NPI 1851141188
1801 SUNSET DR, Columbia, SC 29203(803) 434-4153
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Rebecca Haskell, MD

Obstetrics & Gynecology

2 yrs NPPES
NPI 1962253294
1801 SUNSET DR, Columbia, SC 29203(803) 434-3020
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Esere Nesiama, MD

Orthopaedic Surgery

2 yrs NPPES
NPI 1760233001
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-6879
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Caleb Davis, MD

Pediatrics

2 yrs NPPES
NPI 1518718857
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-6155
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Sunna Kureishy, DO

Pediatrics

2 yrs NPPES
NPI 1134970478
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-6155
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Jeania Ware, MD

Pediatrics

2 yrs NPPES
NPI 1952152290
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-6155
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Kevin Manley, DO

Pediatrics

2 yrs NPPES
NPI 1033960380
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-6155
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Andrew Nienhuis, MD

Pediatrics

2 yrs NPPES
NPI 1588415830
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-6155
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Elizabeth Griffith, MD

Pediatrics

2 yrs NPPES
NPI 1487405734
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-6155
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Alicia Yin, DO

Pediatrics

2 yrs NPPES
NPI 1922859271
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-6155
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Taylor Tidwell, MD

Cardiothoracic Surgery

2 yrs NPPES
NPI 1326899691
2 MEDICAL PARK RD, Columbia, SC 29203(803) 434-7931
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. Natalie Nicholson, DO

Psychiatry

2 yrs NPPES
NPI 1730930017
15 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-4300
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Dr. James Lehfeld, MD

Emergency Medicine

2 yrs NPPES
NPI 1982454294
14 RICHLAND MEDICAL PARK DR, Columbia, SC 29203(803) 434-3790
NPPES public registry
CMS Open Payments· No payments in 2023

Industry Payments

No industry payments on record in the 2023 CMS Open Payments data. This doctor received no reported payments from drug or device makers that year.

Doctors in Columbia, SC — NPPES Registry | DoctorsProof — Page 33 | DoctorsProof