Doctor profile · Federal record

Dr. Susan Brennan, D.O.

Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Emergency Medicine Physician · Emergency Medicine Physician · Dover, DE

  • NPI 1952328411
  • Accepts Medicare
  • 26 yrs in practice
  • Licensed in 2 states
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
640 S State St
Dover, DE 199013530
(302) 674-4700
Mailing address
282 Scarlet Cir
Dover, DE 199045654

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Year of graduation
2000 — 26 yrs since
Specialty taxonomy
207P00000X — NUCC code
State licenses (4)
Delaware #C2-0007293 · Pennsylvania #OS011109L · Pennsylvania #OT-006596T · Delaware #TP-0002840 TEMP

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1952328411. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
683
Distinct HCPCS
10
Medicare allowed
$75,197
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 181 176 $174
99213 Established patient office or other outpatient visit, 20-29 minutes 116 111 $89
93042 Electrocardiogram (ecg) 1 to 3 leads with review by physician only 103 102 $7
99291 Critical care, first 30-74 minutes 73 72 $210
99203 New patient office or other outpatient visit, 30-44 minutes 66 66 $112
87804 Detection test by immunoassay with direct visual observation for influenza virus 35 35 $16
99214 Established patient office or other outpatient visit, 30-39 minutes 30 30 $127
99284 Emergency department visit with moderate level of medical decision making 29 29 $120
81003 Automated urinalysis test 23 23 $2
87880 Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) 16 16 $16

In context: peer comparison

Among 16 peers in this city , average services per provider: 110. This provider delivers 6.2× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
167
Patients
165
Total drug cost
$2,289
Drug Type Claims Patients Total cost
Cephalexin Generic 37 36 $590
Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) Brand 31 31 $354
Methylprednisolone Generic 29 29 $273
Amoxicillin Generic 21 20 $63
Doxycycline Monohydrate Generic 21 21 $375
Albuterol Sulfate Hfa (Albuterol Sulfate) Brand 17 17 $517
Doxycycline Hyclate Generic 11 11 $118

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Susan Brennan's medical specialty?
Dr. Susan Brennan practices Emergency Medicine Physician in Dover, DE.
Where does Dr. Susan Brennan practice?
Dr. Susan Brennan practices at 640 S State St, Dover, DE 199013530. Office phone: 3026744700.
What is Dr. Susan Brennan's NPI?
Dr. Susan Brennan's National Provider Identifier (NPI) is 1952328411, issued by NPPES.
Does Dr. Susan Brennan accept Medicare assignment?
Yes. Dr. Susan Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Susan Brennan commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Established patient office or other outpatient visit (HCPCS 99213); Electrocardiogram (ecg) 1 to 3 leads with review by physician only (HCPCS 93042). Source: CMS Medicare Physician & Other Practitioners file.