Gynecologic Oncology in Delaware
9 licensed gynecologic oncologists practicing in Delaware across 3 cities.
This page republishes public records from the federal NPI Registry, which every licensed U.S. healthcare provider is required to maintain. These are federal-agency records, not a directory we compile.
Source: NPI Registry · last checked
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NPI Registry records — Gynecologic Oncology in Delaware
4 of 9 shown have disclosed payments in CMS Open Payments (2024)
Showing 9 of 9 federal NPI records, alphabetical by last name. Contact details come directly from the NPI Registry — verify currency with the provider's office. Pharma / device payment disclosures from CMS Open Payments are shown where the physician appears in that federal database.
Mark E Borowsky, MD
4701 Ogletown Stanton Rd, Suite 2335
Newark, DE 19713 · (302) 623-4285
License: C10005136 (DE)
In 2024, $243 was disclosed to this physician across 12 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($243).
Largest single payer: GlaxoSmithKline, LLC. ($95).
Mark G Cadungog, MD
4701 Ogletown Stanton Rd Ste 2335
Newark, DE 19713 · (302) 623-4285
License: C1-0008694 (DE)
In 2024, $27 was disclosed to this physician across 1 transaction by pharmaceutical or medical-device companies.
Mostly entertainment ($27).
Largest single payer: GlaxoSmithKline, LLC. ($27).
Stephanie Jean, MD
4701 Ogletown Stanton Rd, Helen F. Graham Cancer Center West, S-2335
Newark, DE 19713 · (302) 623-4285
License: C1-0011425 (DE)
Arielle Katcher, MD
4701 Ogletown Stanton Rd Ste 2335
Newark, DE 19713 · (302) 623-4285
License: C1-0027162 (DE)
In 2024, $1,630 was disclosed to this physician across 3 transactions by pharmaceutical or medical-device companies.
Mostly gifts ($1,500) and entertainment ($130).
Largest single payer: Intuitive Surgical, Inc. ($1,523).
Peter Stephen Konchak, DO
7 S Ohio Ave Ste 2200
Atlantic City, NJ 08401 · (609) 404-3830
License: 25MB06099100 (NJ)
In 2024, $45 was disclosed to this physician across 2 transactions by pharmaceutical or medical-device companies.
Mostly entertainment ($45).
Largest single payer: Janssen Pharmaceuticals, Inc ($23).
James E Larson, MD
4923 Ogletown Stanton Rd, Suite 110
Newark, DE 19713 · (302) 683-0600
License: C1-0003506 (DE)
Emily Webster
4701 Ogletown Stanton Rd Ste 2335
Newark, DE 19713 · (302) 623-4285
License: C1-0028307 (DE)
Charles W Whitney, MD
4923 Ogletown Stanton Rd, Suite 110
Newark, DE 19713 · (302) 683-0600
License: C10002759 (DE)
Payment totals shown for the latest published program year (2024). Presence of disclosed payments is not, on its own, a conflict of interest. Physicians dispute records directly with CMS (dispute process). How we show this.
Open Payments figures as displayed on . Corrections flow from the manufacturer through CMS and are adopted on our next refresh.
What this page is: a republication of public federal NPI Registry records, filtered to the gynecologic oncology taxonomy. It is not a directory we curate, and inclusion is automatic based on each provider's own NPI filing with CMS. Providers who believe their NPI record is inaccurate should update it directly with CMS at npiregistry.cms.hhs.gov; our next refresh adopts the corrected federal record.
Practice info disclaimer: Provider addresses and phone numbers come from the NPI Registry, which providers update at their discretion. Always call ahead to confirm the provider is currently accepting patients and is at the listed address.
Medical disclaimer: This page is not a quality ranking and does not constitute medical advice or endorsement. Choose a provider in consultation with your primary care physician or care team.
Source: NPI Registry (taxonomy: Gynecologic Oncology) · Last checked: 2026-04-20