Susan Brennan, D.O.
Emergency Medicine Physician · Dover, DE
Susan Brennan, D.O. is an emergency medicine physician with a practice address in Dover, Delaware, and NPI 1952328411, issued on Jul 17, 2006. Check the license (Delaware C2-0007293, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Susan Brennan
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- C2-0007293 DE
TP-0002840 TEMP DE
OS011109L PA
OT-006596T PA
Self-reported in NPPES; status is on the state search - Practice location
- 640 S State St, Dover, DE 19901
- Phone
- (302) 674-4700
- Enumerated
- Jul 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20040719001460); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 243 in Delaware → Look up another NPI →
Also registered at 640 S State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly Abbrescia, DOEmergency Medicine Physician1992740625
- Sarah Abdallah, MDStudent in an Organized Health Care Education/Training Program1265374789
- Joseph Raphael Ablaza, M.D.Internal Medicine Physician1366892291
- Anastazia Acevedo, PA-CPhysician Assistant1831495282
- Aashish AcharyaInternal Medicine Physician1912523424
- Denita Adams, CRNACertified Registered Nurse Anesthetist1427233964
Verify Susan Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C2-0007293Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average emergency medicine physician in 2024
510 Medicare Part D claims for 344 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims.
Most prescribed
- Fluticasone Propionate78 claims
- Doxycycline Monohydrate68 claims
- Amoxicillin-Clavulanate Potass62 claims
- Amoxicillin56 claims
- Cephalexin55 claims
- Albuterol Sulfate Hfa42 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.
Bills Medicare through 2 group practices
- Bayhealth Medical Center, IncDover, DE
- Christiana Care Quality PartnersDover, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Susan Brennan among 243 emergency medicine physician records in Delaware
Susan Brennan, D.O. is one of 243 emergency medicine physician records with a practice address in Delaware. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 65% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2000 · median 2010 among the 123 with a school on file
- Record last updated2007 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
59 emergency medicine physician records list a practice address in Dover
They are 59 of the 2,137 NPPES records with a practice address in Dover, and 243 emergency medicine physician records in Delaware.
All 243 in Delaware → Every provider in Dover → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Kelly Abbrescia, DODover, DE 199011992740625
- Andrew Aswegan, MDDover, DE 199011548227812
- Robert Baeder, D.O.Dover, DE 199011588799662
- Philliph Bialecki, M.D.Dover, DE 199011902884463
- Robert Fumento, MDDover, DE 199011740254002
- Rhonda Gill, M.D.Dover, DE 199011881611341
- John Gusdon, MDDover, DE 199011093874471
- Craig Hochstein, M.D.Dover, DE 199011437174844
Common questions
What is Susan Brennan, D.O.'s NPI number?
Susan Brennan, D.O.'s National Provider Identifier (NPI) is 1952328411, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Susan Brennan, D.O. located?
The NPPES record lists a practice address at 640 S State St, Dover, DE, 19901. Phone: (302) 674-4700. Providers update this record themselves, so call before visiting.
How can I verify Susan Brennan, D.O.'s license?
NPPES lists Delaware license number C2-0007293, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Susan Brennan, D.O. prescribe under Medicare Part D?
In 2024, Susan Brennan, D.O. had 510 Medicare Part D claims for 344 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.