Quick answers
- Does Diana O. Treaba accept Medicare assignment?
- Yes. Medicare's clinician data says Diana O. Treaba 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 Diana O. Treaba see?
- In 2024, CMS data shows 926 Original Medicare patients and 2,864 services for Diana O. Treaba. This counts Original Medicare only and measures volume, not quality.
- What is Diana O. Treaba's NPI number?
- 1750328902. 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 Diana O. Treaba, 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 | 926 |
|---|---|
| Services billed to Medicare | 2,864 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Protein measurement, serum (84165)870 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)761 services
- Immunologic analysis technique on serum (immunofixation) (86334)298 services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)157 services
- Special stained specimen slides to examine tissue, initial procedure (88342)102 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 pressure75%
- High cholesterol75%
- Arthritis57%
- Chronic kidney disease36%
- Anxiety33%
- Diabetes32%
Hospitals where Diana O. Treaba works
Medicare's Facility Affiliation Data lists Diana O. Treaba 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.
- Brown University Health Morton HospitalTaunton, MA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 220073
- Newport HospitalNewport, RI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 410006
- Rhode Island HospitalProvidence, RI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 410007
- Saint Anne's HospitalFall River, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220020
- The Miriam HospitalProvidence, RI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 410012
Practice locations
Addresses where Diana O. Treaba is enrolled with Medicare (CMS data updated October 2, 2026).
- 11 Friendship StNewport, RI 02840 (401) 845‑1110
- 164 Summit AveProvidence, RI 02906 (401) 793‑7245
- 593 Eddy StProvidence, RI 02903 (401) 444‑3777
Group practices
Medicare enrollment lists Diana O. Treaba as a member of these groups (CMS data updated October 2, 2026).
- Rhode Island Hospital437 clinicians in the group
- The Miriam Hospital172 clinicians in the group
- Newport Hospital42 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Newport
Clinicians with the same Medicare primary specialty in Newport, RI — not a recommendation.
Other clinicians in Rhode Island Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750328902 |
| 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