Shannon Courtney O'Connor, M.D.
Hematology & Oncology Physician · Rockville, MD
Shannon Courtney O'Connor, M.D. is a hematology & oncology physician with a practice address in Rockville, Maryland, and NPI 1972760452, issued on May 21, 2008. Check the license (Maryland D0073109, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Shannon Courtney O'Connor
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- D0073109 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9707 Medical Center Dr Ste 300, Rockville, MD 20850
- Phone
- (301) 424-6231
- Enumerated
- May 21, 2008
- Record last updated
- Dec 21, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190311000998); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 317 in Maryland → Look up another NPI →
Also registered at 9707 Medical Center Dr Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles FerruzzaPhysical Therapist1609275973
- Jari Haile, PT, DPT, ATCPhysical Therapist1124379995
Verify Shannon Courtney O'Connor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0073109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
565 Medicare Part D claims for 135 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Anastrozole154 claims
- Letrozole57 claims
- Tamoxifen Citrate46 claims
- Xarelto36 claims
- Exemestane35 claims
- Eliquis28 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $373.38
10 payments; by number, the most common kind was food and beverage; the largest payer was Tempus AI, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Maryland Oncology Hematology PAColumbia, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shannon Courtney O'Connor among 317 hematology & oncology physician records in Maryland
Shannon Courtney O'Connor, M.D. is one of 317 hematology & oncology physician records with a practice address in Maryland. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 37% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2005 · median 2000 among the 185 with a school on file
- Record last updated2011 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Maryland
There are 317 hematology & oncology physician records in Maryland.
All 317 in Maryland → Every provider in Rockville → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Manish Agrawal, M.D.Rockville, MD 208501275614984
- Lisa Arsenault, PARockville, MD 208501841427804
- Ed Ashtar, M.D., F.A.C.P.Rockville, MD 208501043201817
- James Brown, M.D.Rockville, MD 208501689755431
- Nicholas Farrell, MDRockville, MD 208501821291477
- Joseph Haggerty, M.D.Rockville, MD 208501013098870
- Leon Hwang, M.D.Rockville, MD 208501972659266
- George Sotos, M.D.Rockville, MD 208501033290705
Common questions
What is Shannon Courtney O'Connor, M.D.'s NPI number?
Shannon Courtney O'Connor, M.D.'s National Provider Identifier (NPI) is 1972760452, issued on May 21, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Shannon Courtney O'Connor, M.D. located?
The NPPES record lists a practice address at 9707 Medical Center Dr Ste 300, Rockville, MD, 20850. Phone: (301) 424-6231. Providers update this record themselves, so call before visiting.
How can I verify Shannon Courtney O'Connor, M.D.'s license?
NPPES lists Maryland license number D0073109, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Shannon Courtney O'Connor, M.D. prescribe under Medicare Part D?
In 2024, Shannon Courtney O'Connor, M.D. had 565 Medicare Part D claims for 135 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Shannon Courtney O'Connor, M.D.'s MIPS final score?
The 2023 MIPS final score is 77.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.