Donald Northfelt, M.D.
NPI 1316922008 · Hematology & Oncology Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Donald Northfelt, M.D. is a Hematology & Oncology Physician provider in Phoenix, AZ (NPI 1316922008).
Provider details
- NPI number
- 1316922008
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 54262 (CO)
Specialties & taxonomies
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 tenure25% of score
20 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
1,343 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) |
|---|---|---|
| Injection of Additional New Drug Or Substance Into Vein96375 | 205 | $15 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 169 | $123 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 156 | $123 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 83 | $14 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 80 | $76 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 68 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Letrozole | 61 | 26 |
| Anastrozole | 50 | 26 |
| Palbociclibbrand: Ibrance | 44 | — |
| Exemestane | 35 | 14 |
| Prochlorperazine Maleate | 26 | 15 |
| Ondansetron Hcl | 21 | 12 |
| Azathioprine | 12 | — |
| Dexamethasone | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 across 1 record (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)
- 13400 E Shea BlvdScottsdale, AZ 85259-5452Phone: (480) 301-8000
Registry dates
- Enumerated
- 2005-12-14
- Last updated
- 2020-09-10
- Certified
- 2020-09-10
Frequently asked questions
- What is Donald Northfelt's NPI number?
- Donald Northfelt's National Provider Identifier (NPI) is 1316922008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Northfelt's specialty?
- Donald Northfelt is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Donald Northfelt located?
- Donald Northfelt's practice location on file with NPPES is 5777 E Mayo Blvd, Phoenix, AZ 85054.
- What is Donald Northfelt's phone number?
- The practice phone number listed in the NPPES registry for Donald Northfelt is (480) 301-8000.
- Does Donald Northfelt accept Medicare?
- Donald Northfelt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Donald Northfelt's NPI active?
- Yes — Donald Northfelt's NPI (1316922008) is active in the NPPES registry as of the last update on 2020-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.