Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Upper Chesapeake Radiation Oncology, LLC

Internal Medicine Physician in Aberdeen, MD · enumerated 2022 · authorized official Marcus Priolo, Chief Financial Officer.

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

National Provider Identifier

1821711425

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Registry record

Entity type Organization (Type 2)

Legal business name Upper Chesapeake Radiation Oncology, LLC

Other name <Unavail>

Practice address 650 Mchenry Rd Ste 1300, Aberdeen, MD, 21001

Phone (443) 843-6600

Enumeration date Sep 20, 2022

Last updated in NPPES Nov 22, 2023

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Marcus Priolo

Title Chief Financial Officer

Phone (443) 643-3344

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-11-22. Verify at npiregistry.cms.hhs.gov.

Where is Upper Chesapeake Radiation Oncology, LLC located?

The practice location on file with NPPES is in Aberdeen, MD.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-22.