Doctor profile · Federal record

Dr. Shannon O'Connor, M.D.

Hematology & Oncology Physician (CMS: Hematology/Oncology) · Rockville, MD

  • NPI 1972760452
  • Accepts Medicare
  • MIPS 76.7 / 100 · 2023
  • 21 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
9707 Medical Center Dr Ste 300
Rockville, MD 208503365
(301) 424-6231

Credentials & registration

NPPES · NUCC
NPI registered
May 2008 — 18 yrs on file
Profile last updated
December 21, 2011
Year of graduation
2005 — 21 yrs since
Specialty taxonomy
207RH0003X — NUCC code
State license (1)
Maryland #D0073109

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1972760452. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
81,323
Distinct HCPCS
10
Medicare allowed
$1,164,420
HCPCS Description Services Patients Avg allowed
J0881 Injection, darbepoetin alfa, 1 microgram (non-esrd use) 17,580 39 $3
J1439 Injection, ferric carboxymaltose, 1 mg 16,500 18 $1
J0185 Injection, aprepitant, 1 mg 7,930 33 $2
J9271 Injection, pembrolizumab, 1 mg 6,800 12 $55
J9144 Injection, daratumumab, 10 mg and hyaluronidase-fihj 5,760 13 $47
J1756 Injection, iron sucrose, 1 mg 5,100 13 $0
J9267 Injection, paclitaxel, 1 mg 4,764 13 $0
J0897 Injection, denosumab, 1 mg 4,320 20 $23
J1437 Injection, ferric derisomaltose, 10 mg 1,900 18 $20
J1100 Injection, dexamethasone sodium phosphate, 1 mg 1,194 54 $0

In context: peer comparison

Among 4 peers in Rockville Hematology & Oncology Physician, average services per provider: 1,992. This provider delivers 41× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$373
Transactions
10
Manufacturers
8
Payer (manufacturer) Industry Txns Amount
Tempus Ai, INC 1 $99.90
US Oncology Corporate, INC. 1 $63.97
Alexion Pharmaceuticals, INC. 2 $51.36
Janssen Biotech, INC. 1 $42.49
Pfizer INC. 2 $39.08
Merck Sharp & Dohme LLC 1 $33.41
Gilead Sciences, INC. 1 $24.68
Lilly USA, LLC 1 $18.49

By nature of payment

Food and Beverage
$373

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
386
Patients
91
Total drug cost
$660,446
Drug Type Claims Patients Total cost
Anastrozole Generic 166 48 $4,566
Letrozole Generic 52 20 $2,081
Exemestane Generic 47 12 $20,030
Tamoxifen Citrate Generic 31 11 $870
Ibrance (Palbociclib) Brand 25 0 $417,656
Eliquis (Apixaban) Brand 21 0 $33,736
Warfarin Sodium Generic 18 0 $599
Xarelto (Rivaroxaban) Brand 15 0 $18,200
Kisqali (Ribociclib Succinate) Brand 11 0 $162,708

Frequently asked questions

Auto-generated from federal data
What is Dr. Shannon O'Connor's medical specialty?
Dr. Shannon O'Connor practices Hematology & Oncology Physician in Rockville, MD.
Where does Dr. Shannon O'Connor practice?
Dr. Shannon O'Connor practices at 9707 Medical Center Dr Ste 300, Rockville, MD 208503365. Office phone: 3014246231.
What is Dr. Shannon O'Connor's NPI?
Dr. Shannon O'Connor's National Provider Identifier (NPI) is 1972760452, issued by NPPES.
Does Dr. Shannon O'Connor accept Medicare assignment?
Yes. Dr. Shannon O'Connor accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Shannon O'Connor commonly perform?
Top Medicare-reported procedures in 2023: Injection, darbepoetin alfa, 1 microgram (non-esrd use) (HCPCS J0881); Injection, ferric carboxymaltose, 1 mg (HCPCS J1439); Injection, aprepitant, 1 mg (HCPCS J0185). Source: CMS Medicare Physician & Other Practitioners file.