Quick answers
- Does Pamela W. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Pamela W. Williams 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 Pamela W. Williams see?
- In 2024, CMS data shows 182 Original Medicare patients and 457 services for Pamela W. Williams. This counts Original Medicare only and measures volume, not quality.
- What is Pamela W. Williams's NPI number?
- 1578500526. 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 Pamela W. Williams, 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 | 182 |
|---|---|
| Services billed to Medicare | 457 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 85 |
Most frequent services
- Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)254 services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)145 services
- Advance care planning, first 30 minutes (99497)29 services
- Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes (99345)22 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%
- Arthritis57%
- Chronic kidney disease55%
- Depression53%
- Ischemic heart disease50%
Practice locations
Addresses where Pamela W. Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 1153 Centre StJamaica Plain, MA 02130 (617) 983‑7000
- 55 Fruit StBoston, MA 02114 (617) 724‑0287
Group practices
Medicare enrollment lists Pamela W. Williams as a member of this group (CMS data updated October 2, 2026).
- Massachusetts General Physicians Organization Inc3,558 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Jamaica Plain
Clinicians with the same Medicare primary specialty in Jamaica Plain, MA — not a recommendation.
Other clinicians in Massachusetts General Physicians Organization Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1578500526 |
| 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
- 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