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Radiation Oncology

David F. Cousins, MD

Works at hospitals in Fredericksburg, VA · Stafford, VA · Williamsport, PA · Virginia, Pennsylvania

Summary

Dr. David F. Cousins, MD is a radiation oncologist at 1100 Grampian Blvd, Williamsport, PA 17701. Phone: (570) 326-8470. Accepts Medicare assignment. In 2024, David F. Cousins had 125 Original Medicare patients and 1,711 services. NPI 1578069910. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Radiation oncologist (Medicare lists Radiation Oncology)
  • Address: 1100 Grampian Blvd, Williamsport, PA 17701 · Directions (2 more locations)
  • Phone: (570) 326‑8470
  • Medicare: Accepts Medicare assignment
  • Hospitals: Mary Washington Hospital, Stafford Hospital, LLC, UPMC Williamsport
  • Group practice: Susquehanna Physician Services (+1 more)
  • Medical school: University Of Arkansas College Of Medicine · graduated 2018 (8 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about David F. Cousins, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does David F. Cousins accept Medicare assignment?
Yes. Medicare's clinician data says David F. Cousins accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does David F. Cousins see?
In 2024, CMS data shows 125 Original Medicare patients and 1,711 services for David F. Cousins. This counts Original Medicare only and measures volume, not quality.
What is David F. Cousins's NPI number?
1578069910. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for David F. Cousins, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients125
Services billed to Medicare1,711
Different services or procedures27
Participating Medicare providerYes
Average age of these patients74

Most frequent services

  1. Ct guidance for insertion of radiation therapy fields (77014)738 services
  2. Calculation of radiation therapy dose (77300)210 services
  3. Radiation treatment management, 5 treatment sessions (77427)191 services
  4. Design and construction of complex radiation treatment device (77334)139 services
  5. Complex radiation therapy planning (77263)67 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
  • Arthritis49%
  • Diabetes30%
  • Ischemic heart disease30%

Hospitals where David F. Cousins works

Medicare's Facility Affiliation Data lists David F. Cousins at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • Mary Washington HospitalFredericksburg, VA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 490022
  • Stafford Hospital, LLCStafford, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490140
  • UPMC WilliamsportWilliamsport, PA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 390045

Practice locations

Addresses where David F. Cousins is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists David F. Cousins as a member of these groups (CMS data updated October 2, 2026).

  • Susquehanna Physician Services612 clinicians in the group
  • Radiation Oncology Specialists of Central Virginia PLC7 clinicians in the group

Specialties

Find other Radiation Oncology doctors in Pennsylvania →

Other radiation oncologists in Williamsport

Clinicians with the same Medicare primary specialty in Williamsport, PA — not a recommendation.

All radiation oncologists in Williamsport →

Other clinicians in Susquehanna Physician Services

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Arkansas College Of Medicine
Graduation year2018 (8 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1578069910
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians