Medical Doctor Program year 2025 Reported 2019–2025 Source: CMS Open Payments, 2026 publication

Oleg Volchonok

Gastroenterology Philadelphia, PA Medical Doctor

NPI 1275571945 CMS profile 684467

11400 Bustleton Ave, Philadelphia, PA 19116

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General payments

$104,360

718 records reported · program years 2019–2025

Research payments

$0

Paid to them · None reported · program years 2019–2025

Ownership & investment interest

$0

None reported

Through program year 2025, Oleg Volchonok of Philadelphia, PA is reported in the CMS Open Payments database as having received $104,360 across 718 general payments and $0 in research payments paid to them.

No combined total General, research and ownership are kept apart. Each is reported under its own rules, and ownership is not money that moved at all but the value of a stake held. A meal, a clinical trial grant and a shareholding do not add up to anything meaningful, so this site does not add them.

General payments for this record sit in the 96th percentile of Gastroenterology profiles with reported payments. Percentile describes the distribution, not the conduct.

By program year

7 rows
Year Kind Relative to this record's peak year Amount Records
2025 General $6,047 101
2024 General $25,486 135
2023 General $11,126 116
2022 General $3,759 79
2021 General $14,750 99
2020 General $14,978 68
2019 General $28,214 120

Beside peers

Year by year, beside peers General payments · among profiles paid that year
  • Oleg Volchonok
  • Gastroenterology median
  • Middle half of Gastroenterology
  • National median

In program year 2025, general payments to Oleg Volchonok were reported at $6,047. Among 13,050 Gastroenterology profiles paid that year, the median was $639 and the middle half received between $167 and $1,700.

Show as a table
Year Oleg Volchonok Gastroenterology median Middle half National median
2019 $28,214 $417 $126–$1,100 $163
2020 $14,978 $224 $74–$624 $114
2021 $14,750 $352 $106–$1,054 $132
2022 $3,759 $448 $129–$1,270 $149
2023 $11,126 $533 $150–$1,390 $160
2024 $25,486 $605 $160–$1,606 $164
2025 $6,047 $639 $167–$1,700 $169

Breakdown

Who paid General payments · program years 2019–2025
  1. AbbVie, Inc. $30,838 151 payments
  2. Phathom Pharmaceuticals, Inc. $20,501 45 payments
  3. Takeda Pharmaceuticals U.S.A., Inc. $13,817 51 payments
  4. Ironwood Pharmaceuticals, Inc $12,036 39 payments
  5. Salix Pharmaceuticals, a division of Bausch Health US, LLC $11,630 108 payments
  6. Allergan Inc. $4,881 19 payments
  7. RedHill Biopharma Inc. $2,499 16 payments
  8. Gilead Sciences, Inc. $2,357 85 payments
  9. Ardelyx, Inc. $793 43 payments
  10. Janssen Biotech, Inc. $772 35 payments
  11. Other $4,235 126 payments

Every payment, record by record

What the payments were for General payments · program years 2019–2025
  1. Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program $76,061 43 payments
  2. Food and Beverage $15,163 621 payments
  3. Compensation for serving as faculty or as a speaker for a non-accredited and noncertified continuing education program $9,000 4 payments
  4. Travel and Lodging $3,493 37 payments
  5. Gift $360 4 payments
  6. Education $283 9 payments
Products named General payments · program years 2019–2025
  1. VOQUEZNA $20,380 42 payments
  2. MOTEGRITY $13,150 14 payments
  3. Linzess Gi $12,002 36 payments
  4. LINZESS Gastroenterology $11,255 54 payments
  5. TRULANCE $10,441 20 payments
  6. CREON $9,342 39 payments
  7. Talicia $2,466 13 payments
  8. ZENPEP Cystic Fibrosis $2,438 10 payments
  9. VIBERZI $1,151 11 payments
  10. ZENPEP Endocrine Pancreatic Insufficiency $1,008 8 payments
  11. Other $10,185 495 payments

A payment can name more than one product, so these amounts overlap and do not add up to the general-payment figure.

Prescribing to Medicare patients

Part D · data year 2024 · 39 drugs

Part D claims

7,643

Median for Gastroenterology: 569

Drug cost

$1,985,835

Median for Gastroenterology: $104,976

Branded share of claims

36.8%

Median for Gastroenterology: 31.8%

Drugs this doctor was counted under in Medicare Part D 2024, by drug cost
Drug Type Relative to their largest Claims Drug cost
Linzess Linaclotide Brand 1,032 $578,185
Creon Lipase/Protease/Amylase Brand 446 $413,435
Stelara Ustekinumab Brand 13 $384,370
Humira(Cf) Pen Adalimumab Brand 25 $161,902
Zenpep Lipase/Protease/Amylase Brand 118 $123,635
Dexlansoprazole Dr Dexlansoprazole Brand 335 $71,551
Xifaxan Rifaximin Brand 20 $64,590
Ibsrela Tenapanor Hcl Brand 20 $33,398
Nexium Esomeprazole Magnesium Brand 55 $26,923
Sutab Sod Sulf/Pot Chloride/Mag Sulf Brand 153 $24,356

The 10 drugs with the highest cost, of 39 counted.

Drug cost is what was paid for the drugs at the pharmacy — by Medicare, the patient and others — and is not money to the prescriber. Medicare Part D only: drugs dispensed to Medicare beneficiaries. A drug with fewer than 11 claims for this prescriber is not published, so a missing drug does not mean zero. The medians are for the 14,294 Part D prescribers listed as Gastroenterology; they describe a distribution and say nothing about conduct.

Billing to Medicare

Part B · data year 2024 · 33 billing codes

Paid by Medicare

$267,557

Medicare's payments for the services billed

Medicare patients

945

Average age 78

Services billed

3,334

556 women, 389 men among their patients

Share of this provider's Medicare patients with each condition
Condition among their Medicare patients Relative to the most common Share of patients
High blood pressure 75%
Arthritis 67%
Diabetes 59%
Ischemic heart disease 51%
Depression 33%
Chronic kidney disease 31%
Atrial fibrillation 29%
Heart failure 27%

Medicare Part B only: services billed to Medicare. Rows covering fewer than 11 beneficiaries are not published. Only drugs given in the clinic are itemised here; the rest of what this provider billed is in the total above.

Payments and prescribing

First 5 of 22 products · payments 2024

Two separate records. The payments come from Open Payments and the claims from Medicare. They are set side by side because they name the same product; they do not show that a payment affected a prescription.

Products this doctor was paid in connection with in 2024, beside Medicare claims for the same product
Product Paid by Related payments Part D claims Part B services
VOQUEZNA
  • Phathom Pharmaceuticals, Inc. $16,761
$16,761 — —
LINZESS
  • Ironwood Pharmaceuticals, Inc $4,716
  • AbbVie, Inc. $2,490
$7,206 1,032 —
IBSRELA
  • Ardelyx, Inc. $184
$184 20 —
RINVOQ
  • AbbVie, Inc. $139
$139 — —
XIFAXAN
  • Salix Pharmaceuticals, a division of Bausch Health US, LLC $122
$122 20 —

A dash means Medicare published no figure for this doctor and product — fewer than 11 claims, or the product is not covered under that part — which is not the same as none. Payments are general payments only; one that names several products is split evenly between them, so an amount is payments related to the product, not money paid for it.

See all 22 in the dashboard with a free account

Records

718 reported

Every payment, record by record

Date, company, amount, what it was for and the product named — filter by year, kind and company, or download as CSV.

Other Gastroenterology in Pennsylvania

Related records

What this means

U.S. law requires drug and medical device manufacturers to report payments and transfers of value they make to physicians and teaching hospitals. The Centers for Medicare & Medicaid Services publishes that record each year. This page shows what was reported about this person, and nothing else.

An ownership interest is different from the other two. It is not a payment: it is a stake — shares, options, a partnership holding — that a physician or an immediate family member held in a manufacturer during that year. The figure shown is what the stake was reported to be worth.

Research payments frequently pass through a clinician to the institution running a trial, and rarely represent personal income. They should be read differently from general payments.

Provenance

Source: CMS Open Payments · through program year 2025

Data current to program year 2025, from CMS's 2026 publication.

We reproduce what manufacturers reported. We do not verify, edit or correct the underlying records.

A payment record is not evidence of wrongdoing. Financial relationships between industry and medicine are legal, common and often necessary for research. Who Paid My Doc reports what was disclosed; it does not judge it.

Who Paid My Doc is independent and is not affiliated with, endorsed by or sponsored by CMS or any U.S. government agency. It is not a consumer reporting agency and this is not a consumer report; do not use it for decisions covered by the Fair Credit Reporting Act.

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