Doctor profile · Federal record

Dr. Brett Hadley, D.O.

Emergency Medicine Physician (CMS: Emergency Medicine) · Aliso Viejo, CA

  • NPI 1932499829
  • Accepts Medicare
  • 16 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
35 Argonaut, Suite B-2
Aliso Viejo, CA 926564151
(801) 367-9019
fax (949) 770-2630

Credentials & registration

NPPES · NUCC
NPI registered
April 2011 — 15 yrs on file
Profile last updated
July 30, 2014
Year of graduation
2010 — 16 yrs since
Specialty taxonomy
207P00000X — NUCC code
State license (1)
Pennsylvania #OT013416

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1932499829. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
587
Distinct HCPCS
6
Medicare allowed
$71,977
HCPCS Description Services Patients Avg allowed
99285 Emergency department visit with high level of medical decision making 193 186 $178
99284 Emergency department visit with moderate level of medical decision making 143 140 $122
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 141 135 $8
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 44 44 $177
99291 Critical care, first 30-74 minutes 44 44 $217
99283 Emergency department visit with low level of medical decision making 22 21 $73

In context: peer comparison

Among 1 peers in Aliso Viejo Emergency Medicine Physician, average services per provider: 97. This provider delivers 6.1× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
90
Patients
88
Total drug cost
$558
Drug Type Claims Patients Total cost
Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) Brand 25 25 $151
Ondansetron Odt (Ondansetron) Brand 19 19 $97
Methylprednisolone Generic 18 17 $153
Azithromycin Generic 14 13 $65
Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) Brand 14 14 $92

Frequently asked questions

Auto-generated from federal data
What is Dr. Brett Hadley's medical specialty?
Dr. Brett Hadley practices Emergency Medicine Physician in Aliso Viejo, CA.
Where does Dr. Brett Hadley practice?
Dr. Brett Hadley practices at 35 Argonaut, Aliso Viejo, CA 926564151. Office phone: 8013679019.
What is Dr. Brett Hadley's NPI?
Dr. Brett Hadley's National Provider Identifier (NPI) is 1932499829, issued by NPPES.
Does Dr. Brett Hadley accept Medicare assignment?
Yes. Dr. Brett Hadley accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brett Hadley commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010). Source: CMS Medicare Physician & Other Practitioners file.