Quick answers
- Does Mary Jane Estrada-Lyder accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Jane Estrada-Lyder 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 Mary Jane Estrada-Lyder see?
- In 2024, CMS data shows 79 Original Medicare patients and 152 services for Mary Jane Estrada-Lyder. This counts Original Medicare only and measures volume, not quality.
- What is Mary Jane Estrada-Lyder's NPI number?
- 1427033257. 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 Mary Jane Estrada-Lyder, 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 | 79 |
|---|---|
| Services billed to Medicare | 152 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)38 services
- Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes (99221)33 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)28 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)18 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)14 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%
- Arthritis75%
- Anxiety66%
- Depression54%
- Ischemic heart disease39%
Hospitals where Mary Jane Estrada-Lyder works
Medicare's Facility Affiliation Data lists Mary Jane Estrada-Lyder 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.
- Newton-Wellesley HospitalNewton, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220101
Practice locations
Addresses where Mary Jane Estrada-Lyder is enrolled with Medicare (CMS data updated October 2, 2026).
- 2014 Washington StNewton, MA 02462 (617) 243‑6000
Group practices
Medicare enrollment lists Mary Jane Estrada-Lyder as a member of this group (CMS data updated October 2, 2026).
- Mass General Brigham Medical Group Suburban Massachusetts Inc602 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Newton
Clinicians with the same Medicare primary specialty in Newton, MA — not a recommendation.
Other clinicians in Mass General Brigham Medical Group Suburban Massachusetts Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1427033257 |
| 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