Brenna Derksen, MD
NPI 1518377985 · Emergency Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brenna Derksen, MD is a Emergency Medicine Physician provider in Phoenix, AZ (NPI 1518377985).
Provider details
- NPI number
- 1518377985
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 60780 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
580 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 233 | $167 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 179 | $8 |
| Critical Care, First 30-74 Minutes99291 | 92 | $203 |
| Management of Oxygen Chamber Therapy99183 | 36 | $101 |
| X-Ray of Chest, 1 View71045 | 26 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 14 | $116 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 36 | 36 |
| Ondansetronbrand: Ondansetron Odt | 27 | 26 |
| Prednisone | 18 | 17 |
| Doxycycline Hyclate | 17 | 17 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$170 across 4 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 200 W Arbor DrSan Diego, CA 92103Phone: (858) 657-7000
Registry dates
- Enumerated
- 2014-05-06
- Last updated
- 2023-12-27
- Certified
- 2023-12-27
Frequently asked questions
- What is Brenna Derksen's NPI number?
- Brenna Derksen's National Provider Identifier (NPI) is 1518377985, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brenna Derksen's specialty?
- Brenna Derksen is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Brenna Derksen located?
- Brenna Derksen's practice location on file with NPPES is 350 W Thomas Rd, Phoenix, AZ 85013-4496.
- What is Brenna Derksen's phone number?
- The practice phone number listed in the NPPES registry for Brenna Derksen is (602) 406-3000.
- Does Brenna Derksen accept Medicare?
- Brenna Derksen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brenna Derksen's NPI active?
- Yes — Brenna Derksen's NPI (1518377985) is active in the NPPES registry as of the last update on 2023-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.