GAGNON ONCOLOGY, LLC
NPI 1376814293
Radiology - Radiation Oncology in Frederick, MD

Q: What is Gagnon Oncology, LLC's NPI number?

The NPI number for Gagnon Oncology, LLC is 1376814293. It was assigned to this organization in the NPPES registry on January 24, 2012.

Q: What is Gagnon Oncology, LLC's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Active since January 24, 2012

1562 OPOSSUMTOWN PIKE, FREDERICK, MD 21702(240) 566-4500(301) 694-5554 Get Directions Write a Review

NPPES record last updated: January 14, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Gagnon Oncology, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GAGNON ONCOLOGY, LLC (NPI 1376814293) is a healthcare organization registered as a radiation oncology in Frederick, Maryland and active in the NPI registry since January 2012. The organization maintains a secondary practice location in Hagerstown and lists Lynda D Losecco, Administrator, as its authorized official.

NPPES Registry Identity

NPI1376814293

Entity TypeOrganization

Primary Taxonomy2085R0001X

Legal Business NameGAGNON ONCOLOGY, LLC

Location Address1562 OPOSSUMTOWN PIKEFrederick, MD 21702-4920

Mailing Address111 Loder St Ste BHornell, NY 14843-1950 · (888) 465-5278 · Fax (607) 324-7615

Phone(240) 566-4500

Fax(301) 694-5554

Organization SubpartYes

Authorized OfficialLynda D LoseccoAdministrator · (607) 324-2340

Enumeration DateJanuary 24, 2012

Last NPPES UpdateJanuary 14, 2025

NPPES CertifiedJanuary 14, 2025

✔ NPI 1376814293 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Radiation OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0001X

License✔ Licensed in MD · D0039954

Definition

A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.

1562 OPOSSUMTOWN PIKE, Frederick, MD 21702

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Secondary Practice Location 1

Location 111110 Medical Campus Rd Ste 129Hagerstown, MD 21742-6799 · Phone (301) 665-4650 · Fax (301) 665-4648

Other Identifiers 1

Medicaid758511000MD

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gagnon Oncology, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 5 clinicians reassign Medicare billing to Gagnon Oncology, LLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (5)

Gregory Gagnon

Radiation Oncology

NPI 1407854268

1562 OPOSSUMTOWN PIKE
Frederick, MD 21702

(240) 566-4500

✔ PECOS✔ Accepts MedicareSame address

Meredith Wernick, M.D., D.A.B.R.

Radiation Oncology

NPI 1720386469

1562 OPOSSUMTOWN PIKE
Frederick, MD 21702

(240) 566-4500

✔ PECOS✔ Accepts MedicareSame address

Jefferson Moulds, M.D.

Radiation Oncology

NPI 1265420582

19735 GERMANTOWN RD STE 255
Germantown, MD 20874

(240) 912-7645

✔ PECOS✔ Accepts Medicare19 mi

Ashima Saini, M.D.

Radiation Oncology

NPI 1285682757

11340 PEMBROOKE SQ SUITE 201
Waldorf, MD 20603

(301) 705-5802

✔ PECOS✔ Accepts Medicare62 mi

Shaju Shamsuddin, MD

Radiation Oncology

NPI 1982696878

667 EASTLAND AVE SE
Warren, OH 44484

(330) 841-4126

✔ PECOS✔ Accepts Medicare217 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gagnon Oncology, LLC's NPI number?

The NPI number for Gagnon Oncology, LLC is 1376814293. It was assigned to this organization in the NPPES registry on January 24, 2012.

Where is Gagnon Oncology, LLC located?

Gagnon Oncology, LLC is located at 1562 Opossumtown Pike, Frederick, MD 21702. The listed phone number is (240) 566-4500.

What is Gagnon Oncology, LLC's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.

Is Gagnon Oncology, LLC enrolled in Medicare?

Yes. Gagnon Oncology, LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Gagnon Oncology, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians, all in Radiation Oncology, reassign their Medicare billing to Gagnon Oncology, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Gagnon Oncology, LLC was last updated on January 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.