Quick answers
- Does Leonie M. Hoyo accept Medicare assignment?
- Yes. Medicare's clinician data says Leonie M. Hoyo 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 Leonie M. Hoyo see?
- In 2024, CMS data shows 487 Original Medicare patients and 1,646 services for Leonie M. Hoyo. This counts Original Medicare only and measures volume, not quality.
- What is Leonie M. Hoyo's NPI number?
- 1790312668. 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 Leonie M. Hoyo, 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 | 487 |
|---|---|
| Services billed to Medicare | 1,646 |
| Different services or procedures | 23 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)485 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)321 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)224 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)124 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)88 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%
- Arthritis46%
- Ischemic heart disease31%
- Diabetes28%
- Atrial fibrillation28%
Hospitals where Leonie M. Hoyo works
Medicare's Facility Affiliation Data lists Leonie M. Hoyo 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.
- Beth Israel Deaconess Hospital - MiltonMilton, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220108
- Beth Israel Deaconess Hospital - NeedhamNeedham, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220083
- Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086
- Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110
- South Shore HospitalSouth Weymouth, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220100
Practice locations
Addresses where Leonie M. Hoyo is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Highland StMilton, MA 02186 (617) 698‑8855
- 20 Patriot PlFoxborough, MA 02035 (508) 718‑4000
- 75 Francis StBoston, MA 02115 (617) 732‑5500
Group practices
Medicare enrollment lists Leonie M. Hoyo as a member of these groups (CMS data updated October 2, 2026).
- Brigham and Womens Physicians Organization Inc2,994 clinicians in the group
- South Shore Internal Medicine Associates Inc.11 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Milton
Clinicians with the same Medicare primary specialty in Milton, MA — not a recommendation.
Other clinicians in Brigham and Womens Physicians Organization Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | Boston University School Of Medicine |
|---|---|
| Graduation year | 2020 (6 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1790312668 |
| 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