Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Benjamin Stoopler, MD

Medical Oncology Physician in New York, NY · enumerated 2006 · practices at Paramount Urological Group, P.C..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1295833937

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Mark Benjamin Stoopler

Credential MD

Sex Male

Practice address 161 Fort Washington Avenue, Room 936, New York, NY, 10032

Phone (212) 305-8230

Fax (212) 305-1019

Enumeration date Sep 20, 2006

Last updated in NPPES Sep 3, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 128446 (NY) Secondary

207RX0202X Medical Oncology Physician Allopathic & Osteopathic Physicians · License 128446 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00576738	Medicaid	NY	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1295833937 active?

Yes, as of the latest NPPES snapshot, NPI 1295833937 is active (record last updated 2024-09-03).

How do I verify Mark Stoopler's NPI record?

Cross-check NPI 1295833937 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Michael Cohen Allergy & Immunology (Internal Medicine) Physician · New York City, NY NPI 1881785202 Siddhartha Mukherjee Medical Oncology Physician · New York, NY NPI 1386718708 Paramount Urological Group, P.C. Urology Physician · New York, NY NPI 1063575934 Igor Matushansky Medical Oncology Physician · New York, NY NPI 1609085679 Melissa Accordino Medical Oncology Physician · New York, NY NPI 1740422039 Justine Kahn Pediatric Hematology & Oncology Physician · New York, NY NPI 1285958165 Luona Sun Surgical Oncology Physician · New York, NY NPI 1396036729 Diana Mcdonnell Adult Health Nurse Practitioner · New York, NY NPI 1306371471

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-03.