Quick answers
- Does Mathew S. Greenberg accept Medicare assignment?
- Yes. Medicare's clinician data says Mathew S. Greenberg accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mathew S. Greenberg see?
- In 2024, CMS data shows 354 Original Medicare patients and 1,219 services for Mathew S. Greenberg. This counts Original Medicare only and measures volume, not quality.
- What is Mathew S. Greenberg's NPI number?
- 1083819551. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mathew S. Greenberg, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 354 |
|---|---|
| Services billed to Medicare | 1,219 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)299 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)277 services
- Microscopic genetic analysis of tumor, manual (88360)132 services
- Special stained specimen slides to examine tissue, initial procedure (88342)123 services
- Evaluation of fine needle aspirate with interpretation and report (88173)90 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure74%
- High cholesterol69%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)44%
- Arthritis37%
- Diabetes28%
- Ischemic heart disease26%
Hospitals where Mathew S. Greenberg works
Medicare's Facility Affiliation Data lists Mathew S. Greenberg at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Covenant Medical CenterLubbock, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450040
- Providence Newberg Medical CenterNewberg, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380037
- Providence Portland Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380061
- Providence St Vincent Medical CenterPortland, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380004
- Providence Willamette Falls Medical CenterOregon City, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380038
Practice locations
Addresses where Mathew S. Greenberg is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1001 N Providence DrNewberg, OR 97132 (503) 537‑1555
- 10150 SE 32nd AveMilwaukie, OR 97222 (503) 513‑8300
- 1500 Division StOregon City, OR 97045 (503) 656‑1631
- 4805 NE Glisan StPortland, OR 97213 (503) 215‑1111
- 725 S Wahanna RdSeaside, OR 97138 (503) 717‑7000
Group practices
Medicare enrollment lists Mathew S. Greenberg as a member of these groups (CMS data updated October 2, 2026).
- Providence Health and Services - Oregon208 clinicians in the group
- Providence Health and Services - Oregon191 clinicians in the group
- Providence Health and Services Oregon97 clinicians in the group
- Providence Health and Services - Oregon62 clinicians in the group
- Providence Health and Services Oregon53 clinicians in the group
- Providence Health and Services - Oregon52 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Newberg
Clinicians with the same Medicare primary specialty in Newberg, OR — not a recommendation.
Other clinicians in Providence Health and Services - Oregon
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Tennessee, Hsc, College Of Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1083819551 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians