Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Shannon Courtney O'Connor, MD

Individual provider Hematology & Oncology Physician · NPI 1972760452

Shannon Courtney O'Connor, MD practises Hematology/Oncology in Rockville, Maryland. Qualified in 2005, 21 years ago. Practices with Maryland Oncology Hematology PA, a 101-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Maryland.

Years since qualifying
21
Licensed in
MD
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9707 Medical Center Dr Ste 300
Rockville, MD 20850-3365 Not confirmed with CMS for 14 years — call before visiting
Phone: (301) 424-6231
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence D0073109 (MD)

Record details

NPI number1972760452
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 21, 2008
Last updated in NPPESDecember 21, 2011

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Maryland Oncology Hematology Pa — 101 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients699
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $566 18 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Suburban Hospital Hospital · Bethesda, MD
  • Adventist Healthcare Shady Grove Medical Center Hospital · Rockville, MD
  • Holy Cross Germantown Hospital Hospital · Germantown, MD

Colleagues at Maryland Oncology Hematology PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 101 clinicians in the practice; 12 are shown here.

Other providers in Rockville