Quick answers
- Does Erica J. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Erica J. 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 Erica J. Williams see?
- In 2024, CMS data shows 88 Original Medicare patients and 258 services for Erica J. Williams. This counts Original Medicare only and measures volume, not quality.
- What is Erica J. Williams's NPI number?
- 1649655895. 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 Erica J. 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 | 88 |
|---|---|
| Services billed to Medicare | 258 |
| Different services or procedures | 25 |
| 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)78 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)32 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)26 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)16 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)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 cholesterol75%
- Arthritis48%
- Ischemic heart disease31%
- Anxiety30%
- Diabetes27%
Hospitals where Erica J. Williams works
Medicare's Facility Affiliation Data lists Erica J. Williams 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.
- Hartford HospitalHartford, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070025
- St Francis Hospital & Medical CenterHartford, CT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 070002
Practice locations
Addresses where Erica J. Williams is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 100 Grand StNew Britain, CT 06052 (860) 224‑5121
- 1060 Day Hill RdWindsor, CT 06095 (860) 696‑2450
- 5 Highland StNew Britain, CT 06052 (860) 224‑5900
- 580 Cottage Grove Rd, Suite 107Bloomfield, CT 06002 (860) 243‑8709
- 80 Seymour StHartford, CT 06102
Group practices
Medicare enrollment lists Erica J. Williams as a member of these groups (CMS data updated October 2, 2026).
- Hartford Healthcare Medical Group Specialists PLLC1,588 clinicians in the group
- Hartford Hospital1,044 clinicians in the group
- The Hospital of Central Connecticut at New Britain General and Bradley399 clinicians in the group
- Collins Medical Associates 2 PC43 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in New Britain
Clinicians with the same Medicare primary specialty in New Britain, CT — not a recommendation.
Other clinicians in Hartford Healthcare Medical Group Specialists PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| School | University Of Connecticut School Of Medicine |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649655895 |
| 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