Quick answers
- Does Natalie R. Rizzo accept Medicare assignment?
- Yes. Medicare's clinician data says Natalie R. Rizzo 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 Natalie R. Rizzo see?
- In 2024, CMS data shows 403 Original Medicare patients and 877 services for Natalie R. Rizzo. This counts Original Medicare only and measures volume, not quality.
- What is Natalie R. Rizzo's NPI number?
- 1528553567. 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 Natalie R. Rizzo, 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 | 403 |
|---|---|
| Services billed to Medicare | 877 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Pathology examination of specimen during surgery, first tissue block (88331)247 services
- Special stained specimen slides to examine tissue, each additional procedure (88341)169 services
- Surgical pathology consultation and report on referred slides prepared elsewhere (88321)135 services
- Pathology examination of tissue using a microscope, moderately high complexity (88307)64 services
- Surgical pathology, gross and microscopic examinations, for prostate needle biopsy, any method (G0416)57 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 cholesterol75%
- High blood pressure72%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)72%
- Arthritis43%
- Chronic kidney disease29%
- Anxiety28%
Hospitals where Natalie R. Rizzo works
Medicare's Facility Affiliation Data lists Natalie R. Rizzo 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.
- Metrowest Medical CenterFramingham, MA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 220175
Practice locations
Addresses where Natalie R. Rizzo is enrolled with Medicare (CMS data updated October 2, 2026).
- 115 Lincoln StFramingham, MA 01702 (508) 383‑1091
- 475 Franklin St, Suite 110Framingham, MA 01702 (508) 620‑9200
Group practices
Medicare enrollment lists Natalie R. Rizzo as a member of these groups (CMS data updated October 2, 2026).
- Gbgastro LLC20 clinicians in the group
- Metrowest Pathology Associates6 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Other clinicians in Gbgastro LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528553567 |
| 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