Quick answers
- Does William A. Porcaro accept Medicare assignment?
- Yes. Medicare's clinician data says William A. Porcaro 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 William A. Porcaro see?
- In 2024, CMS data shows 606 Original Medicare patients and 728 services for William A. Porcaro. This counts Original Medicare only and measures volume, not quality.
- What is William A. Porcaro's NPI number?
- 1952384976. 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 William A. Porcaro, 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 | 606 |
|---|---|
| Services billed to Medicare | 728 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)384 services
- Critical care, first 30-74 minutes (99291)135 services
- Emergency department visit with moderate level of medical decision making (99284)74 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)38 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)16 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 cholesterol73%
- Anxiety47%
- Arthritis46%
- Depression42%
- Ischemic heart disease35%
Hospitals where William A. Porcaro works
Medicare's Facility Affiliation Data lists William A. Porcaro 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.
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220171
- Mount Auburn HospitalCambridge, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220002
Practice locations
Addresses where William A. Porcaro is enrolled with Medicare (CMS data updated October 2, 2026).
- 101 Page StNew Bedford, MA 02740 (508) 679‑3131
- 148 Chestnut StNeedham, MA 02492 (781) 453‑3000
- 330 Mount Auburn StCambridge, MA 02138 (617) 492‑3500
Group practices
Medicare enrollment lists William A. Porcaro as a member of this group (CMS data updated October 2, 2026).
- Associated Physicians of Harvard Medical Faculty Physicians at Beth Is565 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in New Bedford
Clinicians with the same Medicare primary specialty in New Bedford, MA — not a recommendation.
Other clinicians in Associated Physicians of Harvard Medical Faculty Physicians at Beth Is
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Massachusetts Medical School |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952384976 |
| 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