Brenda Ernst, M.D.
NPI 1134449416 · Hematology & Oncology Physician · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brenda Ernst, M.D. is a Hematology & Oncology Physician provider in Scottsdale, AZ (NPI 1134449416).
Provider details
- NPI number
- 1134449416
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- ME135060 (FL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,950 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Injection of Additional New Drug Or Substance Into Vein96375 | 392 | $15 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 285 | $123 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 155 | $168 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 129 | $14 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 115 | $26 |
| Collection of Blood Sample From Implanted Device36591 | 105 | $26 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 57 | 25 |
| Letrozole | 53 | 21 |
| Dexamethasone | 32 | 12 |
| Prochlorperazine Maleate | 27 | 23 |
| Ondansetron Hcl | 25 | 19 |
| Tamoxifen Citrate | 20 | — |
| Exemestane | 18 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude 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.
Practice location
Mailing address
Additional practice locations (1)
- 13400 E Shea BlvdScottsdale, AZ 85259Phone: (480) 301-8000
Registry dates
- Enumerated
- 2010-06-09
- Last updated
- 2020-09-08
- Certified
- 2020-09-08
Frequently asked questions
- What is Brenda Ernst's NPI number?
- Brenda Ernst's National Provider Identifier (NPI) is 1134449416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brenda Ernst's specialty?
- Brenda Ernst is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Brenda Ernst located?
- Brenda Ernst's practice location on file with NPPES is 13400 E Shea Blvd, Scottsdale, AZ 85259.
- What is Brenda Ernst's phone number?
- The practice phone number listed in the NPPES registry for Brenda Ernst is (480) 301-8000.
- Does Brenda Ernst accept Medicare?
- Brenda Ernst is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brenda Ernst's NPI active?
- Yes — Brenda Ernst's NPI (1134449416) is active in the NPPES registry as of the last update on 2020-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.