Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Radiation Oncology

Stephen K. Ronson, MD

Works at hospitals in Rosedale, MD · Baltimore, MD · Towson, MD · Maryland

Summary

Stephen K. Ronson, MD (Radiation Oncology) is listed by Medicare at 4 hospitals in Rosedale, MD, Baltimore, MD and Towson, MD. NPI 1861604589. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Stephen K. Ronson, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Radiation OncologyPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
22Years since medical school (graduated 2004)
University Of Maryland School Of MedicineMedical school
MaleGender (as listed)
MedStar Medical Group II LLCGroup practice

Quick answers

Which hospitals does Stephen K. Ronson work at?
Medicare's official clinician data lists Stephen K. Ronson at 4 hospitals: MedStar Franklin Square Medical Center, MedStar Good Samaritan Hospital, University of Maryland Medical Center and University of MD St Joseph Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Stephen K. Ronson see patients?
Medicare's clinician data lists 2 practice locations, including Baltimore, MD and Rosedale, MD. Call before your visit to confirm the address.
What is Stephen K. Ronson's specialty?
Medicare lists Radiation Oncology as the primary specialty.
Does Stephen K. Ronson accept Medicare assignment?
Yes. Medicare's clinician data says Stephen K. Ronson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Stephen K. Ronson offer telehealth?
Medicare's clinician data says Stephen K. Ronson offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Stephen K. Ronson?
(443) 444-8000, as listed in official Medicare / NPI Registry data.
What is Stephen K. Ronson's NPI number?
1861604589. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Stephen K. Ronson works

Medicare's Facility Affiliation Data lists Stephen K. Ronson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Stephen K. Ronson is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Stephen K. Ronson as a member of this group (CMS data updated 2026-10-02).

  • MedStar Medical Group II LLC3,767 clinicians in the group

Specialties

Find other Radiation Oncology doctors in Maryland →

Other radiation oncologists in Baltimore

Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.

All radiation oncologists in Baltimore →

Clinician information

CredentialMD
Medical schoolUniversity Of Maryland School Of Medicine
Graduation year2004
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1861604589
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians