DoctorsProofNPPES directory · verify at state boards

Doctors in Peoria, IL

1149 physicians listed in the NPPES public registry. Page 18 of 20.

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 Illinois Dept. of Financial & Professional Regulation

Dr. Kayla Thomas, DO

Pediatrics

5 yrs NPPES
NPI 1235717448
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-4940
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. Ivonne Durand Ruiz, DO

Obstetrics & Gynecology

5 yrs NPPES
NPI 1154909182
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-4163
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. Audra Storm, MD

Family Medicine

5 yrs NPPES
NPI 1730767419
6339 N BIG HOLLOW RD, Peoria, IL 61615(309) 693-3315
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. Asma Matougelwerfelli, MD

Pediatrics

5 yrs NPPES
NPI 1669051157
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-7171
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. Anup Kotadia, MD

Internal Medicine

5 yrs NPPES
NPI 1134708449
221 NE GLEN OAK AVE, Peoria, IL 61636(309) 672-5522
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 Wells, MD

Dermatology

5 yrs NPPES
NPI 1013596998
4909 N GLEN PARK PLACE RD, Peoria, IL 61614(309) 712-4193
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. Courtney Thrower, DO

Pediatrics

5 yrs NPPES
NPI 1669052213
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-4940
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. Tierra Weglarz, DO

Family Medicine

5 yrs NPPES
NPI 1154901528
5111 N GLEN PARK PLACE RD, Peoria, IL 61614(309) 683-5700
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. Calee Bresnahan, MD

Family Medicine

5 yrs NPPES
NPI 1841870151
815 MAIN ST STE C, Peoria, IL 61602(309) 672-4977
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. Katherine Matulle, DO

Family Medicine

5 yrs NPPES
NPI 1851971170
815 MAIN ST STE C, Peoria, IL 61602(309) 672-4977
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. Piotr Weglarz, DO

Family Medicine

5 yrs NPPES
NPI 1477133346
815 MAIN ST STE C, Peoria, IL 61602(309) 672-4977
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. Hailey Sellek, MD

Family Medicine

5 yrs NPPES
NPI 1578143459
8914 N KNOXVILLE AVE, Peoria, IL 61615(309) 691-9110
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. Alexis Priddy, MD

Pediatrics

5 yrs NPPES
NPI 1881274785
5114 N GLEN PARK PLACE RD STE 110, Peoria, IL 61614(309) 683-5600
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. Hyung Jin Lim, DO

Family Medicine

5 yrs NPPES
NPI 1699355511
7800 N SOMMER ST STE 608, Peoria, IL 61615(309) 676-5546
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. Samantha Ward, DO

Pediatrics

5 yrs NPPES
NPI 1174104954
530 NE GLEN OAK AVE, Peoria, IL 61637(413) 770-2133
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. Trent Ledbetter, DO

Emergency Medicine

5 yrs NPPES
NPI 1306427893
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Sohiub Assaf, MD

Internal Medicine

5 yrs NPPES
NPI 1598346918
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 624-8818
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. Robert Lopez, MD

Emergency Medicine

5 yrs NPPES
NPI 1669053948
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Abigail Rapp, MD

Emergency Medicine

5 yrs NPPES
NPI 1447831771
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Kaitlyn Brown, DO

Pediatrics

5 yrs NPPES
NPI 1346821527
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-4940
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. Samuel Schimke, MD

Emergency Medicine

5 yrs NPPES
NPI 1144801499
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Rachel Kempisty, MD

Emergency Medicine

5 yrs NPPES
NPI 1184205312
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Carolina Hartje, DO

Emergency Medicine

5 yrs NPPES
NPI 1942881883
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Michelle Beetler, MD

Emergency Medicine

5 yrs NPPES
NPI 1700467651
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Rida Gareeb, MD

Family Medicine

5 yrs NPPES
NPI 1205418886
815 MAIN ST STE C, Peoria, IL 61602(309) 672-4986
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. Motaz Abas, MD

Internal Medicine

5 yrs NPPES
NPI 1215510201
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-6384
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. Robert Wilson, MD

Emergency Medicine

5 yrs NPPES
NPI 1174107437
221 NE GLEN OAK AVE, Peoria, IL 61636(309) 672-5522
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. Mitchel Wagner, DO

Emergency Medicine

5 yrs NPPES
NPI 1609440684
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Grace Kumor, MD

Psychiatry

5 yrs NPPES
NPI 1780258889
900 MAIN ST # 72061602, Peoria, IL 61602(309) 495-1640
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. Darrell Downs, MD

Internal Medicine

5 yrs NPPES
NPI 1639745318
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-6348
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. Maryam Moin, MD

Neurology

5 yrs NPPES
NPI 1700455078
530 NE GLEN OAK AVENUE, Peoria, IL 61637(309) 655-2702
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. Nikesh Patel, MD

Internal Medicine

5 yrs NPPES
NPI 1023688371
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-6384
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. Asya Hussain, MD

Pediatrics

5 yrs NPPES
NPI 1831769942
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2274
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. Deep Mehta, MD

Gastroenterology

5 yrs NPPES
NPI 1285205773
1 ILLINI DR, Peoria, IL 61605(309) 655-2000
NPPES public registry
CMS Open Payments· $75.00 (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.

$75.00

Total received

1

Transactions

1

Paying companies

Top paying companies

FUJIFILM Healthcare Americas Corporation$75.00

Among the 17,272 gastroenterology doctors we've analyzed, about 63% received any industry payment (median $623 among those who did). This doctor's total is on the lower end — around the 45th percentile of that group.

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

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

Dr. Akash Khetpal, MD

Internal Medicine

5 yrs NPPES
NPI 1689246456
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2730
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. Tasneem Adenwala, MD

Internal Medicine

5 yrs NPPES
NPI 1437721123
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2730
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. Maham Shahid, MD

Internal Medicine

5 yrs NPPES
NPI 1598438137
8600 IL-91 STE 130, Peoria, IL 61615(309) 683-5050
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. Cassandra Worrick, MD

General Practice

5 yrs NPPES
NPI 1720752074
8914 N PRAIRE POINTE, Peoria, IL 61615(877) 726-6494
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. Cristen Banks, MD

Ophthalmology

5 yrs NPPES
NPI 1275201360
4505 N ROCKWOOD DR STE 1, Peoria, IL 61615(309) 589-1880
NPPES public registryAccepts Medicare (2024)
CMS Open Payments· $503.08 (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.

$503.08

Total received

8

Transactions

6

Paying companies

Top paying companies

Regeneron Healthcare Solutions, Inc.$240.80
AbbVie Inc.$97.92
Astellas Pharma US Inc$97.01
Biogen, Inc.$28.90
Mallinckrodt Hospital Products Inc.$25.63
Genentech USA, Inc.$12.82

Among the 23,451 ophthalmology doctors we've analyzed, about 60% received any industry payment (median $348 among those who did). This doctor's total ranks around the 76th percentile of that group.

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

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

Dr. Andrea Machnacki, MD

Family Medicine

5 yrs NPPES
NPI 1790453702
3626 N SHERIDAN RD, Peoria, IL 61604(309) 308-5100
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. Lynna Moenga, MD

Family Medicine

5 yrs NPPES
NPI 1689346843
1820 W MOSS AVE, Peoria, IL 61606(815) 614-0046
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. Alexandra Roper, MD

Surgery

4 yrs NPPES
NPI 1003556580
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2000
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. Jacquelyn Flor, DO

Pediatrics

4 yrs NPPES
NPI 1013657329
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-7171
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. Mahilet Assefa, MD

Surgery

4 yrs NPPES
NPI 1518607936
624 NE GLEN OAK AVENUE, Peoria, IL 61603(309) 655-4775
NPPES public registry
CMS Open Payments· $809.98 (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.

$809.98

Total received

6

Transactions

1

Paying companies

Top paying companies

W. L. Gore & Associates, Inc.$809.98

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 82th percentile of that group.

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

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

Dr. Ryan Tan, DO

Neurology

4 yrs NPPES
NPI 1366183626
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2730
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. Bridget Tesher, MD

Family Medicine

4 yrs NPPES
NPI 1336880129
815 MAIN ST STE C, Peoria, IL 61602(309) 672-4986
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. Morgan Stricker, DO

Internal Medicine

4 yrs NPPES
NPI 1346981800
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-6384
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. Saad Kothawala, MD

Emergency Medicine

4 yrs NPPES
NPI 1205577715
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Talya Jeffrey, DO

Emergency Medicine

4 yrs NPPES
NPI 1366183881
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Jeremiah Bean, DO

Emergency Medicine

4 yrs NPPES
NPI 1336881614
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Lauren Casey, DO

Emergency Medicine

4 yrs NPPES
NPI 1457093726
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Evan Zeddies, MD

Emergency Medicine

4 yrs NPPES
NPI 1982346839
540 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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 Reshetar, MD

Emergency Medicine

4 yrs NPPES
NPI 1780326652
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2000
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 Tran, MD

Pediatrics

4 yrs NPPES
NPI 1639811425
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-4940
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. Sudakshina Biswas, MD

Internal Medicine

4 yrs NPPES
NPI 1417690876
8600 ILLINOIS ROUTE-91, SUITE 130 OSF INTERNAL MED, Peoria, IL 61615(309) 683-5050
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. Robert Russell, DO

Emergency Medicine

4 yrs NPPES
NPI 1710620927
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2109
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. Mehwish Kishore, MD

Gastroenterology

4 yrs NPPES
NPI 1467196774
530 NE GLEN OAK AVE NORTH BUILDING 5676, Peoria, IL 61637(309) 655-7732
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. Prince Ehimamiegho, MD

Family Medicine

4 yrs NPPES
NPI 1497499719
815 MAIN ST STE C, Peoria, IL 61602(309) 672-4977
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. Keerthana Palaniappa Sivakolundu, MD

Internal Medicine

4 yrs NPPES
NPI 1053055459
530 NE GLEN OAK AVE, Peoria, IL 61637(309) 655-2730
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 Peoria, IL — NPPES Registry | DoctorsProof — Page 18 | DoctorsProof