Matthew Lonergan, MD
NPI 1639122591 · Hematology & Oncology Physician · Eugene, OR
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Lonergan, MD is a Hematology & Oncology Physician provider in Eugene, OR (NPI 1639122591).
Provider details
- NPI number
- 1639122591
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD00034123 (WA)
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
7,188 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,080 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,048 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 948 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 506 | $92 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 504 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 207 | 58 |
| Dexamethasone | 89 | 44 |
| Prednisone | 70 | 25 |
| Ondansetron Hcl | 68 | 42 |
| Oxycodone Hcl | 64 | 22 |
| Prochlorperazine Maleate | 58 | 37 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 36 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$917 across 7 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
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2021-07-15
- Certified
- 2021-07-15
Frequently asked questions
- What is Matthew Lonergan's NPI number?
- Matthew Lonergan's National Provider Identifier (NPI) is 1639122591, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Lonergan's specialty?
- Matthew Lonergan is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Lonergan located?
- Matthew Lonergan's practice location on file with NPPES is 520 Country Club, Eugene, OR 97401-6036.
- What is Matthew Lonergan's phone number?
- The practice phone number listed in the NPPES registry for Matthew Lonergan is (541) 683-5001.
- Does Matthew Lonergan accept Medicare?
- Matthew Lonergan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Lonergan's NPI active?
- Yes — Matthew Lonergan's NPI (1639122591) is active in the NPPES registry as of the last update on 2021-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.